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GLAH01 Product Data Dictionary

File-Level (Global) Attributes

Attribute Example Value
featureType timeSeries
ShortName GLAH01
title GLAS/ICESat L1A Global Altimetry Data (HDF5)
comment Data granules contain approximately 23 minutes (1/4 orbit) of data and will include pulse travel times, the transmitted and received waveform, transmitted and received energy, echo time offsets, and instrument filter and threshold values.
summary The waveforms are used by altimetric scientists studying detailed surface characteristics that cannot be fully expressed in the waveform parameterization on GLAH05, especially over ice sheets and land. Instrument scientists used the data to check the health and welfare. The data values were used as input to compute parameters on GLAH05. Each GLAH01 file was created from an equivalent GLA01 binary formatted file. The provenance metadata shows the history that created the GLA01.
license http://nsidc.org/data/icesat/disclaimer.html
references http://nsidc.org/data/docs/daac/glas_icesat_l1_l2_global_altimetry.gd.html (Guide Document for this product at NSIDC), http://nsidc.org/daac/icesat/index.html (GLAS Product page at NSIDC)
AccessConstraints Data may not be reproduced or distributed without including the CitationForExternalPublication for this product included in this Metadata. Data may not be distributed in an altered form without the written permission of the GLAS Science Team.
CitationforExternalPublication The data used in this study were produced by the GLAS Science Team at the ICESat Science Investigator-led Processing System (I-SIPS) at NASA/GSFC. The data archive site is the NSIDC DAAC.
contributor_role Data Originator, Investigator, Producer, Producer
contributor_name David W. Hancock (David.W.Hancock@nasa.gov), Bob E Schutz (schutz@utcsr.ae.utexas.edu), Jay Zwally (Jay.Zwally@nasa.gov), John P DiMarzio (John.P.Dimarzio.1@nasa.gov)
creator_name ICESat Science Investigator-led Processing System (I-SIPS)
creator_email David.W.Hancock@nasa.gov
publisher_name NSIDC User Services
publisher_email nsidc@nsidc.org
publisher_url http://nsidc.org/daac/icesat/index.html
platform Ice, Cloud, and Land Elevation Satellite (ICESat)
instrument Geoscience Laser Altimeter System (GLAS)
processing_level 1A
date_created 2013-03-13T10:54:04
spatial_coverage_type Horizontal
history 2011-06-01T19:14:02 glas_l1a 6.0.1 GLA01_033_2113_002_0085_1_01_0001.DAT, 2013-03-13T10:54:04.000000Z GLA01_h5_convert Version 1.0 (May 2012) out/GLAH01_033_2113_002_0085_1_01_0001.H5
geospatial_lat_min -90.0
geospatial_lat_max 90.0
geospatial_lon_min -180.0
geospatial_lon_max 180.0
geospatial_lat_units degrees_north
geospatial_lon_units degrees_east
keywords Earth Science > Spectral/Engineering > Infrared Wavelengths > Sensor Counts > Waveform
keywords_vocabulary GCMD Science Keywords Version 6.0
standard_vocabulary_name CF-1.6
naming_authority http://dx.doi.org
project Ice, Cloud, and Land Elevation Satellite (GLAS_HDF)
time_type UTC
date_type J2000
time_coverage_start 2005-11-01T11:42:39
time_coverage_end 2005-11-01T12:04:04
time_coverage_duration 1620
source Satellite Measurements
HDFVersion HDF5 1.8.9
identifier_file_uuid D65E7C2A-7BC1-444F-AE6F-991DAD0B45FF
identifier_product_doi 10.5067/ICESAT/GLAS/DATA101
identifier_product_type GLAH01
identifier_product_format_version 1.0
Conventions CF-1.6
institution National Aeronautics and Space Administration (NASA)


Group: /Data_1HZ

This group contains data with a rate of 1Hz. 1Hz data may be indexed to the 40Hz data using the i_rec_ndx parameter in each respective time group.

Dimension Scales

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
DS_UTCTime_1 DOUBLE
(UNLIMITED)
Transmit Time of First Shot in frame in J2000
(time)
seconds The transmit time of the first shot in the 1 second frame measured as 'UTC seconds' elapsed since Jan 1 2000 12:00:00 UTC. This time has been derived from the GPS time accounting for leap seconds. Rel 33 GLAS Binary Data NOT_SET

Group: Data_1HZ/Time

This group contains the 1Hz index and time-related parameters

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_rec_ndx INTEGER
(UNLIMITED)
GLAS Record Index
(NOT_SET)
NOT_SET Unique index that relates this record to the corresponding record(s) in each GLAS data product. Rel 33 GLAS Binary Data DS_UTCTime_1
i_shot_count INTEGER
(UNLIMITED)
GLAS Pulse Index
(NOT_SET)
NOT_SET Identifies each laser shot within a record index. A combination of i_rec_ndx and i_shot_count can be used to uniquely identify each GLAS laser shot. Rel 33 GLAS Binary Data DS_UTCTime_1
shot_time_flg INTEGER_1
(UNLIMITED)
time correction flag
(NOT_SET)
NOT_SET Shot time flag; Indicates what shot time is used.

flag values flag_meanings
0, 1 transmit_time ground_bounce_time
Rel 33 GLAS Binary Data DS_UTCTime_1
gps_time_flg INTEGER_1
(UNLIMITED)
time correction flag
(NOT_SET)
NOT_SET GPS time flag; Indicates if delta gps time correction is applied to shot time

flag values flag_meanings
0, 1 not_applied applied
Rel 33 GLAS Binary Data DS_UTCTime_1
pl_timing_flg INTEGER_1
(UNLIMITED)
time correction flag
(NOT_SET)
NOT_SET Post-launch timing; indicates if post-launch timing bias is applied. Data value is stored in the Metadata group.

flag values flag_meanings
0, 1 not_applied applied
Rel 33 GLAS Binary Data DS_UTCTime_1
ddelay_flg INTEGER_1
(UNLIMITED)
time correction flag
(NOT_SET)
NOT_SET Digitizer turn-on delay flag; Indicates if digitizer turn-on delay is accounted for in shot time. Data value is stored in the Metadata group.

flag values flag_meanings
0, 1 applied not_applied
Rel 33 GLAS Binary Data DS_UTCTime_1
peaktp_flg INTEGER_1
(UNLIMITED)
time correction flag
(NOT_SET)
NOT_SET Peak of transmit pulse flag; Indicates if time to peak of transmit pulse is accounted for in shot time

flag values flag_meanings
0, 1 applied not_applied
Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Packet_Data

This group contains flags indicating the quality or suitability of data.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
apid_ADLg_1_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer large wf packet APID availability flag for 1st 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADLg_2_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer large wf packet APID availability flag for 2nd 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADLg_3_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer large wf packet APID availability flag for 3rd 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADLg_4_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer large wf packet APID availability flag for 4th 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADSm_1_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer small wf packet APID availability flag for 1st 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADSm_2_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer small wf packet APID availability flag for 2nd 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADSm_3_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer small wf packet APID availability flag for 3rd 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADSm_4_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer small wf packet APID availability flag for 4th 10 shots

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_PC532_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET 532nm Photon Counter packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CD1064_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET 1064 Cloud Digitizer packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ADSci_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Ancillary science packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ASAD_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Altimeter Digitizer telemetry data in Ancillary science packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ASPC_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Photon Counter telemetry data in Ancillary science packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ASCF_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Cloud Digitizer telemetry data in Ancillary science packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_ASCT_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Command and Telemetry (C&T) board telemetry 40Hz data in Ancillary science packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CT20_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET CT HW telemetry packet #1 (APID 20 - Laser Monitor Board, Temperature Controller Module, Motor Control System & High Voltage Power Supply Housekeeping Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CT21_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET CT HW telemetry packet #2 (APID 21 - Power Distribution Unit (PDU) Housekeeping Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CT22_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET CT HW telemetry packet #3 (APID 22 - Housekeeping Temperatures #1 Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CT23_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET CT HW telemetry packet #4 (APID 23 - Housekeeping Temperatures #2 Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_CT50_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET CT HW telemetry packet #5 (APID 50 - Small Software #2 Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_SS24_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Small software telemetry packet #1 (APID 24 - Small Software #1 Telemetry) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LS25_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Large software telemetry packet #1 (APID 25 - Large Software Telemetry #1) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LS55_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Large software telemetry packet #2 (APID 55 - Large Software Telemetry #2) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_GPS_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET GPS telemetry packet APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_PRAP_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET S/C position, rate, and attitude telemetry packet (PRAP) APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LPA_1_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET Laser Pulse Array (LPA) packet #1 APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LPA_2_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET LPA packet #2 APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LPA_3_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET LPA packet #3 APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1
apid_LPA_4_flg INTEGER_1
(UNLIMITED)
APID Data Availability Flag
(NOT_SET)
NOT_SET LPA packet #4 APID availability flag

flag values flag_meanings
0, 1, 2 present filled_at_EDOS never_received_ISIPS_filled
Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Geolocation

This group contains geolocation-related parameters.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
d1_pred_lat DOUBLE
(UNLIMITED)
Predicted geodetic Latitude of the laser footprint
(latitude)
degrees_north The geodetic Latitude of the laser footprint; obtained from the predicted orbit; assuming the laser is nadir pointing. Rel 33 GLAS Binary Data DS_UTCTime_1
d1_pred_lon DOUBLE
(UNLIMITED)
Predicted geodetic Longitude of the laser footprint
(longitude)
degrees_east The geodetic Longitude of the laser footprint; obtained from the predicted orbit; assuming the laser is nadir pointing. Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Transmit_Energy

This group contains information relating to transmit energy.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
d_TxNrg_EU DOUBLE
(UNLIMITED)
1064 nm Laser Transmit Energy
(NOT_SET)
joules The 1064 nm laser pulse transmitted energy in energy units, computed from the digitized outgoing pulse, and the transmit gain. Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Instrument_Settings

This group contains information relating to instrument status.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_InstState INTEGER
(UNLIMITED)
Instrument State
(NOT_SET)
NOT_SET Flag defining current configuration of the GLAS instrument. A brief summary follows: bit 0: Laser A, bit 1: Laser B, bit 2: Laser C, bit 3: OTS, bit 4: Primary Altimeter Digitizer, bit 5: secondary altimeter digitizer, bit 6: primary oscillator, bit 7: secondary oscillator, bit 8: SPCM1, bit 9: SPCM2, bit 10: SPCM3, bit 11: SPCM4, bit 12: SPCM5, bit 13: SPCM6, bit 14: SPCM7, bit 15: SPCM8, bit 16: GPS receiver 1, bit 17: GPS receiver 2, bit 18: Primary altimeter detector, but 19: Secondary altimeter detector, bits 20-31: spares Rel 33 GLAS Binary Data DS_UTCTime_1
i_FiltNumMask INTEGER
(UNLIMITED)
Filter Selection Mask
(NOT_SET)
NOT_SET The low order 6 bits, bits 0 through 5, indicate which filters were selectable for a shot. The definition of complete failure of the filters means the complete failure of all SELECTABLE filters. Bit 0: 4 nsec filter, bit 1: 8 nsec filter, bit 2: 16 nsec filter, bit 3: 32 nsec filter, bit 4: 64 nsec filter, bit 5: 128 nsec filter. In case of the complete failure of all the filters, the result of the last 'good' shot shall be used, even if this mask proscribes the filter choice. A bit value = 1 =selectable; bit value = 0 = not selectable. Rel 33 GLAS Binary Data DS_UTCTime_1
d_ObSCHt DOUBLE
(UNLIMITED)
On-board Height of S/C
(NOT_SET)
meters Geodetic altitude of S/C above earth surface (Hsat). From APID19, Offset 1092. Rel 33 GLAS Binary Data DS_UTCTime_1
i_N_val INTEGER
(UNLIMITED)
Value of N
(NOT_SET)
gates Value of N used for waveform compression for the frame. From APID19, Offset 236. Rel 33 GLAS Binary Data DS_UTCTime_1
i_compRatio_p INTEGER
(UNLIMITED)
Compression Ratios
(NOT_SET)
NOT_SET Averaging values p and q for frame. First item is p; second is q. From APID19, Offset 232. First N downlink samples are generated by averaging p raw digitized elements and the rest of the allocated samples in the waveform by averaging q elements. Rel 33 GLAS Binary Data DS_UTCTime_1
i_compRatio_q INTEGER
(UNLIMITED)
Compression Ratios
(NOT_SET)
NOT_SET Averaging values p and q for frame. First item is p; second is q. From APID19, Offset 232. First N downlink samples are generated by averaging p raw digitized elements and the rest of the allocated samples in the waveform by averaging q elements. Rel 33 GLAS Binary Data DS_UTCTime_1
i_r_val INTEGER
(UNLIMITED)
Value of r
(NOT_SET)
NOT_SET Value of r used for waveform compression for frame. From APID19, Offset 238. Not valid if APID19 is missing. Rel 33 GLAS Binary Data DS_UTCTime_1
i_ADdetOutGn INTEGER
(UNLIMITED)
Transmitted Gain
(NOT_SET)
counts AD Detector Return Gain readback Rel 33 GLAS Binary Data DS_UTCTime_1
i_DEMmin INTEGER
(UNLIMITED)
DEM minimum
(NOT_SET)
meters Onboard spacecraft DEM minimum elevation used to calculate hmin. From APID19, Offset 1192. Rel 33 GLAS Binary Data DS_UTCTime_1
i_DEMmax INTEGER
(UNLIMITED)
DEM maximum
(NOT_SET)
meters Onboard spacecraft DEM maximum elevation used to calculate hmax. From APID19, Offset 1193. Rel 33 GLAS Binary Data DS_UTCTime_1
i_Hoff_min DOUBLE
(UNLIMITED)
DEM Offset Min
(NOT_SET)
meters Offset associated with the minimum height uploaded in the DEM used to define the range window. minimum height offset = DEM uncertainty + bias; default is 1.125 km. From APID19, Offset 1116. Rel 33 GLAS Binary Data DS_UTCTime_1
i_Hoff_max DOUBLE
(UNLIMITED)
DEM Offset Max
(NOT_SET)
meters Offset associated with the maximum height uploaded in the DEM used to define the range window. Maximum height offset = DEM uncertainty + bias; default is 1.125 km. From APID19, Offset 1116. Rel 33 GLAS Binary Data DS_UTCTime_1
i_ADBias_min DOUBLE
(UNLIMITED)
Altimeter Digitizer Bias Min
(NOT_SET)
kilometers Altimeter Digitizer bias values added to minimum range. Default value is 0. Used when necessary to correct for off-nadir pointing angles greater than 1 degree. From APID19, Offset 1124. Rel 33 GLAS Binary Data DS_UTCTime_1
i_ADBias_max DOUBLE
(UNLIMITED)
Altimeter Digitizer Bias Max
(NOT_SET)
kilometers Altimeter Digitizer bias values added to maximum range. Default value is 0. Used when necessary to correct for off-nadir pointing angles greater than 1 degree. From APID19, Offset 1124. Rel 33 GLAS Binary Data DS_UTCTime_1
d_Rmin DOUBLE
(UNLIMITED)
Range Window Start Rmin
(NOT_SET)
kilometers Range window start in kilometers. From APID19, Offset 1100. Rel 33 GLAS Binary Data DS_UTCTime_1
d_Rmax DOUBLE
(UNLIMITED)
Range Window Stop Rmax
(NOT_SET)
kilometers Range window stop in kilometers. From APID19, Offset 1100. Rel 33 GLAS Binary Data DS_UTCTime_1
d_Wmin DOUBLE
(UNLIMITED)
Window Size Min
(NOT_SET)
kilometers Range window minimum size. Default is 2 km. From APID19, Offset 1108. Rel 33 GLAS Binary Data DS_UTCTime_1
d_WMax DOUBLE
(UNLIMITED)
Window Size Max
(NOT_SET)
kilometers Range window maximum size. Default is 11 km. From APID19, Offset 1108. Rel 33 GLAS Binary Data DS_UTCTime_1
i_EchoLandType INTEGER_1
(UNLIMITED)
Echo Land Type
(NOT_SET)
NOT_SET Surface Echo Land Type for Compression. 0=sea, 1=land, 2=sea/ice, 3=land/ice. From APID19, Offset 231. Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Engineering

This group contains engineering values.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
d_T_detID DOUBLE
(UNLIMITED)
Detector temperature
(NOT_SET)
degrees C Temerature of powered detector. Rel 33 GLAS Binary Data DS_UTCTime_1
d_T_digID DOUBLE
(UNLIMITED)
Digitizer temberature
(NOT_SET)
degrees C Temperature of powered digitizer. Rel 33 GLAS Binary Data DS_UTCTime_1
d_T_relay DOUBLE
(UNLIMITED)
Oscillator board temp
(NOT_SET)
degrees C Temperature of powered oscillator Rel 33 GLAS Binary Data DS_UTCTime_1
d_T_fb DOUBLE
(UNLIMITED)
Fiber box temperature
(NOT_SET)
degrees C Temperature of fiber box Rel 33 GLAS Binary Data DS_UTCTime_1

Group: Data_1HZ/Flags

This group contains information relating to flags.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
orbit_pred_flg INTEGER_1
(UNLIMITED)
Orbit Prediction Flag
(NOT_SET)
NOT_SET Predicted or precision orbit

flag values flag_meanings
0, 1, 2 precision_orbit_used predicted_orbit_used on-board_orbit_used
Rel 33 GLAS Binary Data DS_UTCTime_1
orbit_man_flg INTEGER_1
(UNLIMITED)
Orbit Maneuver Flag
(NOT_SET)
NOT_SET Maneuvers

flag values flag_meanings
0, 1 no_maneuvers maneuvers orbit_degraded
Rel 33 GLAS Binary Data DS_UTCTime_1
orbit_model_flg INTEGER_1
(UNLIMITED)
Orbit Model Problems Flag
(NOT_SET)
NOT_SET Model problems, occour when orbit RMS > 5 cm; required accuracy not met

flag values flag_meanings
0, 1 no_problems problems
Rel 33 GLAS Binary Data DS_UTCTime_1
orbit_att_flg INTEGER_1
(UNLIMITED)
Orbit Attitude Flag
(NOT_SET)
NOT_SET Attitude; if modeled attitude used, possible orbit degradation

flag values flag_meanings
0, 1 instrument_attitude_used modeled_attitude_used
Rel 33 GLAS Binary Data DS_UTCTime_1
orbit_array_flg INTEGER_1
(UNLIMITED)
Orbit Array Orientation Flag
(NOT_SET)
NOT_SET Solar ray orientation; if modeled array orientation used, possible orbit degadation

flag values flag_meanings
0, 1 solar_ray_orientation_from_measurement modeled_solar_ray_orientation
Rel 33 GLAS Binary Data DS_UTCTime_1
orbit_gps_flg INTEGER_1
(UNLIMITED)
Orbit GPS Flag
(NOT_SET)
NOT_SET GPS; if GPS data missing, possible orbit degradation

flag values flag_meanings
0, 1 no_GPS_data_outage GPS_data_missing
Rel 33 GLAS Binary Data DS_UTCTime_1
i_RngSrc_Flag INTEGER_1
(UNLIMITED)
Range Data Source
(NOT_SET)
NOT_SET Source of Range data: 0 = s/c time and position packet; 1 = uplinked DEM bytes; 2 = uplinked Rmin/Rmax. From APID19, Offset 1194.

flag values flag_meanings
0, 1, 2 spacecraft uplinked_dem uplinked_rminrmax
Rel 33 GLAS Binary Data DS_UTCTime_1


Group: /Data_40HZ/

This group contains data with a rate of 40Hz. 40Hz data may be indexed to the 1Hz data using the i_rec_ndx parameter in each respective time group.

Dimension Scales

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
DS_UTCTime_40 DOUBLE
(UNLIMITED)
Transmit Time of First Shot in frame in J2000
(time)
seconds The transmit time of each shot in the 1 second frame measured as UTC seconds elapsed since Jan 1 2000 12:00:00 UTC. This time has been derived from the GPS time accounting for leap seconds. Rel 33 GLAS Binary Data NOT_SET
DS_Gate_Index_48 INTEGER
(UNLIMITED)
Dimension scale for tx gate index (1-48)
(NOT_SET)
NOT_SET This is the dimension scale for the transmit waveform gate index. Values range from 1-48. Rel 33 GLAS Binary Data NOT_SET
DS_Gate_Index_544 INTEGER
(UNLIMITED)
Dimension scale for rec gate index (1-544)
(NOT_SET)
NOT_SET This is the dimension scale for the receive waveform gate index. Values range from 1-544. Rel 33 GLAS Binary Data NOT_SET
DS_wt_fact_filt_index INTEGER
(UNLIMITED)
Dimension scale for filter weights (1-6)
(NOT_SET)
NOT_SET This is the dimension scale corresponding to filter weights. Values range from 1-6. Rel 33 GLAS Binary Data NOT_SET

Group: Data_40HZ/Time

This group contains the 40Hz index and time-related parameters.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_rec_ndx INTEGER
(UNLIMITED)
GLAS Record Index
(NOT_SET)
NOT_SET Unique index that relates this record to the corresponding record(s) in all other GLAS data product. Rel 33 GLAS Binary Data DS_UTCTime_40
i_shot_count INTEGER
(UNLIMITED)
GLAS Pulse Index
(NOT_SET)
NOT_SET Identifies each laser shot within a record index. A combination of i_rec_ndx and i_shot_count can be used to uniquely identify each GLAS laser shot. Rel 33 GLAS Binary Data DS_UTCTime_40

Group: Data_40HZ/Waveform/Characteristics

This group contains information relating to the characteristics of the waveforms.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_waveformType INTEGER
(UNLIMITED)
i_waveformType
(NOT_SET)
NOT_SET Indicates number of valid samples in waveform; 0 = missing;1 = Long waveform (544 samples); 2 =Short waveform (200 samples)

flag values flag_meanings
0, 1, 2 missing long short
Rel 33 GLAS Binary Data DS_UTCTime_40
i_LastThrXingT INTEGER
(UNLIMITED)
Last Threshold Crossing Location for Selected Filter
(NOT_SET)
ns Address, in digitizer counts, of the detected last (i.e. last in time) threshold crossing (as measured from the start of Acquisition Memory, i.e. Start of digitization). Also called the trailing edge. Set to 0 if threshold crossing was NOT detected. From APID12/13, Offset 84. Rel 33 GLAS Binary Data DS_UTCTime_40
i_NextThrXing INTEGER
(UNLIMITED)
Next to Last Threshold Crossing Location for Selected Filter
(NOT_SET)
ns Address (in dititizer counts) of the detected next to last threshold crossing (as measured from the start of Acquisition Memory, i.e. Start of digitization. Also called the leading edge. Set to 0 if a threshold crossing was NOT detected. From APID12/13 offset 88. Rel 33 GLAS Binary Data DS_UTCTime_40
i_EchoPeakLoc INTEGER
(UNLIMITED)
Echo Peak Location
(NOT_SET)
ns Address (in digitizer counts) of the detected peak value (as measured from the start of Acquisition Memory, i.e. Start of digitization). Set to 0 if a threshold crossing was NOT detected. From APID12/13 offset 100. Rel 33 GLAS Binary Data DS_UTCTime_40
i_EchoPeakVal DOUBLE
(UNLIMITED)
Echo Peak Value
(NOT_SET)
volts Peak value for the selected filter returned by the FIR filter engine. Set to 0 if a threshold crossing was not detected. From APID12/13 offset 96. Rel 33 GLAS Binary Data DS_UTCTime_40
i_filtr_thresh INTEGER
(UNLIMITED)
Selected Filter Threshold Value
(NOT_SET)
counts Threshold values used to find the last and next to last threshold crossings for the selected filter. From APID12/13, Offset 108. Rel 33 GLAS Binary Data DS_UTCTime_40
d_RecNrgAll_EU DOUBLE
(UNLIMITED)
1064 Laser received Energy from all signal above threshold
(NOT_SET)
joules This is calculated from the area under the received waveform (referenced to the observed noise) from all gates between the first and last threshold crossings. Rel 33 GLAS Binary Data DS_UTCTime_40
d_RecNrgLast_EU DOUBLE
(UNLIMITED)
1064 nm Laser Received Energy (max pk)
(NOT_SET)
joules This is the energy in the 1064 nm laser pulse between the threshold crossings before and after the maximum amplitude in energy units. Rel 33 GLAS Binary Data DS_UTCTime_40
i_filtnum INTEGER
(UNLIMITED)
Filter Number
(NOT_SET)
NOT_SET Filter with the highest weight (0 for 4 nsec filter; 1 for 8 nsec filter; 2 for 16 nsec filter; 3 for 32 nsec filter; 4 for 64 nsec filter; 5 for 128 nsec filter). May or may not be selectable! If no selectable filter can be chosen, then the last successful filter, selectable or NOT is chosen. From APID12/13, Offset 104. Rel 33 GLAS Binary Data DS_UTCTime_40
i_shot_ctr INTEGER
(UNLIMITED)
Shot Counter
(NOT_SET)
counts The shot number for each of the 40 shots in this record. The shot count rolls over after reaching 200. From APID12/13, Offset 16. Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_4ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 4-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_8ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 8-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_16ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 16-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_32ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 32-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_64ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 64-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no1stX_128ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No first crossing found on 128-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_4ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 4-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_8ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 8-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_16ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 16-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_32ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 32-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_64ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 64-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_no2ndX_128ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No second crossing found on 128-nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_4ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range greater than or equal to threshold for 4 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_8ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range >= to threshold for 8 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_16ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range >= threshold for 16 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_32ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range >= threshold for 32 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_64ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range >= threshold for 64 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_aboveTh_128ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET First sample in range >= threshold for 128 nsec filter

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_allFltrsRej_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET All filters were rejected flag. 0 = FALSE, 1 = TRUE. This flag will be set to true (1) if bits 0 through 5 in Filter Selection Mask (i_FiltNumMask ) are set

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_noFltrSel_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET No filters were ever selected; all previous selections failed. (happens on DSP reset).0=False, at least one previous selection succeeded, 1=True

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_4ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 4ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_8ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 8ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_16ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 16ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_32ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 32ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_64ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 64ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_fltrFail_128ns_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET 128ns filter failed

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_retRngInv_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET Return range is invalid. 0=Range OK, 1=Failure

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_sciPrIncmplt_flg INTEGER_1
(UNLIMITED)
Range Window Status Word
(NOT_SET)
NOT_SET Science processing is incomplete. 0=Ready, 1=Failure

flag values flag_meanings
0, 1 false true
Rel 33 GLAS Binary Data DS_UTCTime_40
i_gainSet1064 INTEGER
(UNLIMITED)
AD Gain Setting
(NOT_SET)
counts The receiver gain; results of the gain algorithm. From APID12/13, Offset 148. Rel 33 GLAS Binary Data DS_UTCTime_40
i_4nsPeakVal INTEGER
(UNLIMITED)
4ns Filter Peak value
(NOT_SET)
volts Received pulse Peak value for the 4ns filter; returned by the FIR engine. From APID12/13, Offset 92. Rel 33 GLAS Binary Data DS_UTCTime_40
i_8nsPeakVal INTEGER
(UNLIMITED)
8ns Filter Peak value
(NOT_SET)
volts Received pulse Peak value for the 8ns filter; returned by the FIR engine. From APID12/13, Offset 94. Rel 33 GLAS Binary Data DS_UTCTime_40
d_4nsBgMean DOUBLE
(UNLIMITED)
Background Mean Value
(NOT_SET)
volts Background Noise Mean Value for the 4 ns filter. From APID12/13, Offset 112. Rel 33 GLAS Binary Data DS_UTCTime_40
d_4nsBgSDEV DOUBLE
(UNLIMITED)
Background Standard Deviation
(NOT_SET)
volts The standard deviation of the background noise for the 4 ns filter. From APID12/13, Offset 116. Rel 33 GLAS Binary Data DS_UTCTime_40
i_samp_pad INTEGER
(UNLIMITED)
Echo Sample Padding
(NOT_SET)
gates Surface echo sample padding. Number of zero bytes used to pad the surface echo data samples after averaging. From APID12/13, Offset 152. Rel 33 GLAS Binary Data DS_UTCTime_40
i_comp_type INTEGER_1
(UNLIMITED)
Echo Compression Type
(NOT_SET)
NOT_SET Surface echo compression type. Indicates the type of compression performed. 0 = N, p, and q; 1 = r. From APID12/13, Offset 154.

flag values flag_meanings
0, 1 npq_compression r_compression
Rel 33 GLAS Binary Data DS_UTCTime_40
i_gainStatus INTEGER_1
(UNLIMITED)
Gain Status Bits
(NOT_SET)
NOT_SET Note that these bits are always set to 0 on the first shot of a science run and when auto gain is disabled. bit 0x1: 0 if the gain loop was run for this shot; 1 if the gain loop was bypassed for this shot; bit 0x2: 0 if the gain loop did not time out; 1 if the gain loop timed out and was reset;

flag values flag_meanings
0, 1, 2 gain_loop_run_ok gain_loop_bypassed gain_loop_reset
Rel 33 GLAS Binary Data DS_UTCTime_40
i_NumCoinc INTEGER
(UNLIMITED)
Number of Coincidences for Selected Filter
(NOT_SET)
NOT_SET The number of coincidences between the selected filter and all other filters (including itself). This is one of the terms used to calculate the weight of the selected filter. If no filter is selected, this value is 0. Rel 33 GLAS Binary Data DS_UTCTime_40
i_rawPkHt INTEGER
(UNLIMITED)
Height of Peak in Raw Waveform
(NOT_SET)
counts The maximum raw value in a specified range at the end of the return waveform. This value is used as the input to the gain control loop in place of the 8ns peak height. Rel 33 GLAS Binary Data DS_UTCTime_40
i_wt_fact_filt INTEGER
(UNLIMITED, 6)
Filter Weight Factors
(NOT_SET)
NOT_SET Results of weight formulas for all FIR filters. There are a total of 6 filters. From APID12/13, offset 124. Rel 33 GLAS Binary Data DS_UTCTime_40
i_TxFlg INTEGER
(UNLIMITED)
Transmit Pulse Flag
(NOT_SET)
NOT_SET Flag indicating whether the transmit pulse is telemetered (valid) or not telemetered (invalid) for this shot

flag values flag_meanings
0, 1 telemetered not_telemetered
Rel 33 GLAS Binary Data DS_UTCTime_40
l_GainShiftFlg INTEGER_1
(UNLIMITED)
Gain Shift Flag
(NOT_SET)
NOT_SET Flag indicates if the gain has been shifted for the corresponding measurement. 0=Gain has been shifted (valid) or 1=Gain has not been shifted (potentially invalid) in this shot.

flag values flag_meanings
0, 1 gain_shifted gain_not_shifted
Rel 33 GLAS Binary Data DS_UTCTime_40

Group: Data_40HZ/Waveform/TransmitWaveform

This group contains information relating to transmit waveforms.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_time_txWfPk INTEGER
(UNLIMITED)
Transmit Pulse Peak Location
(NOT_SET)
ns Address in digitizer counts of the Transmit Pulse Peak as measured from the start of Acquisition Memory, i.e. start of digitization. From APID12/13, Offset 68. Rel 33 GLAS Binary Data DS_UTCTime_40
i_txWfPk_Flag INTEGER_1
(UNLIMITED)
Transmit Waveform Peak Status Flag
(NOT_SET)
NOT_SET Transmit_Peak_Status. Status Word: Bit 0: If bit is set to 1 (true), then internal software failure. Bit 1: If bit is set to 1 (true), then peak is below threshold. Bit 2: If bit is set to 1 (true), peak was not found. Note: once set to true, Bit 2 is latched and is only cleared by a DSP board reset or by a ground command. From APID12/13, Offset 72. Rel 33 GLAS Binary Data DS_UTCTime_40
i_TxWfStart INTEGER
(UNLIMITED)
Starting Address of Transmit Pulse Sample
(NOT_SET)
ns Starting Address in digitizer counts of the Transmit Pulse sample relative to the start of digitization. From APID12/13, Offset 76. Rel 33 GLAS Binary Data DS_UTCTime_40
r_tx_wf REAL
(UNLIMITED, 48)
Sampled Transmit Pulse Waveform
(NOT_SET)
volts Transmit Pulse 48 waveform samples in calibrated volts. The delta times for transmit waveform sample j is provided in the attribute array tx_wf_sample_location_table (j). Rel 33 GLAS Binary Data DS_UTCTime_40

Group: Data_40HZ/Waveform/RecWaveform

This group contains all received (return) waveforms.

Label Datatype
(Dimensions)
long_name
(standard_name)
units description source coordinates
i_RespEndTime INTEGER
(UNLIMITED)
Ending Address of Range Reponse
(NOT_SET)
ns Address (in digitizer counts) of the 2000-byte surface echo data dump (as measured from the start of Acquisition Memory, i.e. Start of digitization). Closest to ground. From APID12/13 offset 80. Rel 33 GLAS Binary Data DS_UTCTime_40
i_rec_wf_location_index INTEGER_1
(UNLIMITED)
Waveform sample index
(NOT_SET)
counts This is an index into the array of 544 times within the rec_wf_sample_location_table (found in the ANCILLARY_DATA group) that contains the delta time for each sample to be added to the ending address of range (i_RespEndTime) in order to provide the range in ns for each range waveform sample. Rel 33 GLAS Binary Data DS_UTCTime_40
r_rng_wf REAL
(UNLIMITED, 544)
1064 nm Range Waveform
(NOT_SET)
volts The 1064 nm echo waveform digitizer sample output, at 544 samples per shot over land and ice sheet and 200 samples per shot over sea ice and ocean. The sample values are in volts. The surface type is determined by the instrument from the on-board DEM. The digitized data was averaged according to the echo compression type (i_comp_type) and the compression ratio (i_N_val, i_compRatio_p, i_compRatio_q, and i_r_val). The delta times for each echo of the 544 waveform samples is provided within the 544 times stored in rec_wf_sample_location_table (an attribute in the /ANCILLARY_DATA group) and indexed by i_rec_wf_location_index. Rel 33 GLAS Binary Data DS_UTCTime_40

/ANCILLARY_DATA

/ANCILLARY_DATA

Attribute Example Value
glas_osc_rate 1.000000026
glas_osc_rate_date 2005-10-21
glas_osc_rate_time 00:00:00
sc_osc_rate 0.99999998854809
sc_osc_rate_date 2005-10-21
sc_osc_rate_time 00:00:00
internal_time_delay 0.0000151100
internal_time_delay_date 2005-10-21
internal_time_delay_time 00:00:00
internal_range_delay 9.5560
internal_range_delay_date 2005-10-21
internal_range_delay_time 00:00:00
Additional_Attribute Track, Track_Segment, ReferenceOrbit, Cycle, Instance
internal_range_delay_desc Internal range calibration bias determined during GLAS instrument integration testing and validated in-flight, meters.
internal_time_delay_desc Internal time calibration bias determined during GLAS instrument integration testing and validated in-flight, seconds.
gain_table array ( 256 )
volt_table_1 array ( 256 )
volt_table_2 array ( 256 )
tx_wf_sample_location_table array ( 48 )
rec_wf_sample_location_table array ( 544 , 5 )

/METADATA

/METADATA

Attribute Example Value
description This group contains structured, computer-parseable ECHO-style collection and inventory-level metadata.
HDFVersion HDF5 1.8.9
ControlFile cf_name=gla01_test.ctl

/METADATA/COLLECTIONMETADATA

Attribute Example Value
DLLName libDsESDTSyBASIC.001Sh.so
GranuleTimeDuration 1620
SpatialSearchType NotSupported
DataFileFormat HDF5
ScienceMimeType application/x-hdfeos
BrowseMimeType application/x-hdfeos
BrowseOnlineMimeType image/jpeg
ShortName GLAH01
LongName GLAS/ICESat L1A Global Altimetry Data (HDF5)
CollectionDescription Data granules contain approximately 23 minutes (1/4 orbit) of data and will include pulse travel times, the transmitted and received waveform, transmitted and received energy, echo time offsets, and instrument filter and threshold values.
VersionID 33
CitationforExternalPublication The data used in this study were produced by the GLAS Science Team at the ICESat Science Investigator-led Processing System (I-SIPS) at NASA/GSFC. The data archive site is the NSIDC DAAC.
CollectionState In Work
MaintenanceandUpdateFrequency Daily
AccessConstraints Data may not be reproduced or distributed without including the CitationForExternalPublication for this product included in this Metadata. Data may not be distributed in an altered form without the written permission of the GLAS Science Team.
TemporalKeyword Day
SpatialKeyword Global

/METADATA/COLLECTIONMETADATA/AdditionalAttributes

Attribute Example Value
Track AdditionalAttributesContainer
Track_Segment AdditionalAttributesContainer
Instrument_State AdditionalAttributesContainer
ReferenceOrbit AdditionalAttributesContainer
Cycle AdditionalAttributesContainer
Instance AdditionalAttributesContainer
Instrument_State_Date AdditionalAttributesContainer
Instrument_State_Time AdditionalAttributesContainer
identifier_product_doi AdditionalAttributesContainer
identifier_file_uuid AdditionalAttributesContainer
identifier_product_doi_authority AdditionalAttributesContainer

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Cycle

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription A count of the number of exact repeats of this reference orbit.
AdditionalAttributeName Cycle
ParameterUnitsofMeasurement counts
ParameterRangeBegin 0
ParameterRangeEnd 250

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Instance

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription The number of times that we have returned to a specific reference orbit.
AdditionalAttributeName Instance
ParameterUnitsofMeasurement counts
ParameterRangeBegin 1
ParameterRangeEnd 99

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Instrument_State

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription Flag word that indicates which redundant units (laser, detector, oscillator) of the GLAS instrument are in operation.
AdditionalAttributeName Instrument_State
ParameterUnitsofMeasurement Flag word
ParameterRangeBegin 0
ParameterRangeEnd 5

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Instrument_State_Date

Attribute Example Value
AdditionalAttributeDatatype date
AdditionalAttributeDescription The date that corresponds to the first valid Instrument_State. There is a maximum of two per granule.
AdditionalAttributeName Instrument_State_Date

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Instrument_State_Time

Attribute Example Value
AdditionalAttributeDatatype time
AdditionalAttributeDescription The time that corresponds to the first valid Instrument_State. There is a maximum of two per granule.
AdditionalAttributeName Instrument_State_Time

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/ReferenceOrbit

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription Assigned number for which exact orbital elements describe the exact repeat orbit pattern.
AdditionalAttributeName ReferenceOrbit
ParameterUnitsofMeasurement Assigned number
ParameterRangeBegin 1
ParameterRangeEnd 30000

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Track

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription The unique number assigned for each repeat ground track (one orbit) of the reference orbit.
AdditionalAttributeName Track
ParameterUnitsofMeasurement counts
ParameterRangeBegin 0
ParameterRangeEnd 3000

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/Track_Segment

Attribute Example Value
AdditionalAttributeDatatype int
AdditionalAttributeDescription Number assigned for the specific latitude segment (1 = +50 to +50, 2 = +50 to -50, 3 = -50 to -50, 4 = -50 to +50) of the track for the data.
AdditionalAttributeName Track_Segment
ParameterUnitsofMeasurement counts
ParameterRangeBegin 1
ParameterRangeEnd 4

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/identifier_file_uuid

Attribute Example Value
AdditionalAttributeDatatype varchar
AdditionalAttributeDescription Universally unique identifier for this data product's files
AdditionalAttributeName identifier_file_uuid

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/identifier_product_doi

Attribute Example Value
AdditionalAttributeDatatype varchar
AdditionalAttributeDescription Digital object identifier that uniquely identifies this data product
AdditionalAttributeName identifier_product_doi

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/identifier_product_doi/InformationContent

Attribute Example Value
ParameterValue 10.5067/ICESAT/GLAS/DATA101

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/identifier_product_doi_authority

Attribute Example Value
AdditionalAttributeDatatype varchar
AdditionalAttributeDescription URL of the digital object identifier resolving authority
AdditionalAttributeName identifier_product_doi_authority

/METADATA/COLLECTIONMETADATA/AdditionalAttributes/identifier_product_doi_authority/InformationContent

Attribute Example Value
ParameterValue http://dx.doi.org

/METADATA/COLLECTIONMETADATA/CSDTDescription

Attribute Example Value
PrimaryCSDT n-Dim Array of Records
IndirectReference tracks/orbits
Implementation HDF
CSDTComments Data for each orbit is divided into four granules, Lat +50 to Lat +50, Lat +50 to Lat -50, Lat -50 to Lat -50, Lat -50 to Lat +50.

/METADATA/COLLECTIONMETADATA/CollectionAssociation

Attribute Example Value
GLAH06 CollectionAssociationContainer
GLAH05 CollectionAssociationContainer
GLA00 CollectionAssociationContainer
GLAH12 CollectionAssociationContainer
GLAH13 CollectionAssociationContainer
GLAH14 CollectionAssociationContainer
GLAH15 CollectionAssociationContainer

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLA00

Attribute Example Value
CollectionType Input
CollectionUse The initial collection of GLAS instrument data downlinked from the spacecraft
ShortName GLA00
VersionID 1

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH05

Attribute Example Value
CollectionType Dependent
CollectionUse Level 1B file containing: the range, corrections to the range from the waveform retracking algorithms, and the reflectance. GLAH05 provides the range corrections and waveform analysis results needed to compute the elevation.
ShortName GLAH05
VersionID 33

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH06

Attribute Example Value
CollectionType Dependent
CollectionUse Level 1B file containing: elevations, elevation corrections, reflectance, and associated timing and data quality information.
ShortName GLAH06
VersionID 33

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH12

Attribute Example Value
CollectionType Dependent
CollectionUse Level 2 file containing: corrected ice sheet elevations above the reference ellipsoid, reflectance, and the corrections that were used. The product parameters are the result of product-specialized waveform fitting.
ShortName GLAH12
VersionID 33

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH13

Attribute Example Value
CollectionType Dependent
CollectionUse Level 2 file containing: Sea Ice Elevation, Reflectance, and Ice Berg Elevations. The product parameters are the result of product-specialized waveform fitting.
ShortName GLAH13
VersionID 33

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH14

Attribute Example Value
CollectionType Dependent
CollectionUse Level 2 file containing: corrected surface elevations above the reference ellipsoid, reflectance, and the corrections that were used. The product parameters are the result of product-specialized waveform fitting.
ShortName GLAH14
VersionID 33

/METADATA/COLLECTIONMETADATA/CollectionAssociation/GLAH15

Attribute Example Value
CollectionType Dependent
CollectionUse Level 2 file containing: corrected Ocean elevations above the reference ellipsoid, reflectance, and the corrections that were used. The product parameters are the result of product-specialized waveform fitting.
ShortName GLAH15
VersionID 33

/METADATA/COLLECTIONMETADATA/ContactOrganization

Attribute Example Value
Data_Originator ContactOrganizationContainer
Archive ContactOrganizationContainer

/METADATA/COLLECTIONMETADATA/ContactOrganization/Archive

Attribute Example Value
Role Archive
HoursofService M-F, 8:00am to 5:00pm, Mountain Time
ContactInstructions For inquiries, contact NSIDC User Services. Primary first level contact.
ContactOrganizationName NSIDC User Services
StreetAddress CIRES/NSIDC University of Colorado Campus, Box 449
City Boulder
StateProvince Colorado
PostalCode 80309-0449
Country USA
TelephoneNumber 303-492-2468
TelephoneNumberType Facsimile
ElectronicMailAddress nsidc@nsidc.org

/METADATA/COLLECTIONMETADATA/ContactOrganization/Data_Originator

Attribute Example Value
Role Data Originator
HoursofService M-F, 8:00am to 4:30pm Eastern Time
ContactInstructions Contact by e-mail first
ContactOrganizationName ICESat Science Investigator-led Processing System (I-SIPS)
StreetAddress Building 33, NASA Goddard Space Flight Center
City Greenbelt
StateProvince Maryland
PostalCode 20771
Country USA
TelephoneNumber 757-864-1238
TelephoneNumberType Voice
ElectronicMailAddress David.W.Hancock@nasa.gov

/METADATA/COLLECTIONMETADATA/ContactPerson

Attribute Example Value
Hancock ContactPersonContainer
Schutz ContactPersonContainer
Zwally ContactPersonContainer
DiMarzio ContactPersonContainer

/METADATA/COLLECTIONMETADATA/ContactPerson/DiMarzio

Attribute Example Value
Role Producer
HoursofService M-F, 8:00am to 4:30pm Eastern Time
ContactInstructions None
ContactJobPosition Deputy Science Software Development Manager
ContactFirstName John
ContactMiddleName P
ContactLastName DiMarzio
StreetAddress Building 33, Rm. B-209D, NASA/GSFC
City Greenbelt
StateProvince Maryland
PostalCode 20771
Country USA
TelephoneNumber 301-614-5893
TelephoneNumberType Voice
ElectronicMailAddress John.P.Dimarzio.1@nasa.gov

/METADATA/COLLECTIONMETADATA/ContactPerson/Hancock

Attribute Example Value
Role Data Originator
HoursofService M-F, 8:00am to 4:30pm. Eastern Time.
ContactInstructions None
ContactJobPosition Science Software Development Manager.
ContactFirstName David
ContactMiddleName W.
ContactLastName Hancock
StreetAddress Building N-159, NASA/GSFC Wallops Flight Facility.
City Wallops Island
StateProvince Virginia
PostalCode 23337
Country USA
TelephoneNumber 757-824-1238
TelephoneNumberType Voice
ElectronicMailAddress David.W.Hancock@nasa.gov

/METADATA/COLLECTIONMETADATA/ContactPerson/Schutz

Attribute Example Value
Role Investigator
HoursofService M-F, 8:00am to 4:30pm Central Time
ContactInstructions None
ContactJobPosition GLAS Science Team Leader
ContactFirstName Bob
ContactMiddleName E
ContactLastName Schutz
StreetAddress 3925 W. Braker Lane, Center for Space Research
City Austin
StateProvince Texas
PostalCode 78759-5321
Country USA
TelephoneNumber 512-471-4267
TelephoneNumberType Voice
ElectronicMailAddress schutz@utcsr.ae.utexas.edu

/METADATA/COLLECTIONMETADATA/ContactPerson/Zwally

Attribute Example Value
Role Producer
HoursofService M-F, 8:00am to 4:30pm Eastern Time
ContactInstructions None.
ContactJobPosition ICESat Project Scientist
ContactFirstName Jay
ContactLastName Zwally
StreetAddress Building 33, Rm A-217
City Greenbelt
StateProvince Maryland
PostalCode 20771
Country USA
TelephoneNumber 301-614-5643
TelephoneNumberType Voice
ElectronicMailAddress Jay.Zwally@nasa.gov

/METADATA/COLLECTIONMETADATA/DisciplineTopicParameters

/METADATA/COLLECTIONMETADATA/DisciplineTopicParameters/Spectral

Attribute Example Value
Engineering DisciplineTopicParametersContainer

/METADATA/COLLECTIONMETADATA/DisciplineTopicParameters/Spectral/Engineering

Attribute Example Value
ECSDisciplineKeyword Earth Science
ECSTopicKeyword Spectral/Engineering
ECSTermKeyword Infrared Wavelengths
ECSVariableKeyword Sensor Counts

/METADATA/COLLECTIONMETADATA/DisciplineTopicParameters/Spectral/Engineering/ECSParameter

Attribute Example Value
ECSParameterKeyword Waveform

/METADATA/COLLECTIONMETADATA/ECSCollection

Attribute Example Value
RevisionDate 2012-06-25
SuggestedUsage The waveforms are used by altimetric scientists studying detailed surface characteristics that cannot be fully expressed in the waveform parameterization on GLAH05, especially over ice sheets and land. Instrument scientists used the data to check the health and welfare. The data values were used as input to compute parameters on GLAH05. Each GLAH01 file was created from an equivalent GLA01 binary formatted file. The provenance metadata shows the history that created the GLA01.
ProcessingCenter GSFC I-SIPS
ArchiveCenter NSIDC
VersionDescription Initial Version
DatasetDisclaimerPointer http://nsidc.org/data/icesat/disclaimer.html
ECSCollectionGuidePointer http://nsidc.org/data/docs/daac/glas_icesat_l1_l2_global_altimetry.gd.html
ECSCollectionGuidePointerComment Guide Document for this product at NSIDC
MiscellaneousInformationPointer http://nsidc.org/daac/icesat/index.html
MiscellaneousInformationPointerComment GLAS Product page at NSIDC

/METADATA/COLLECTIONMETADATA/Platform

Attribute Example Value
ICESat PlatformContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat

Attribute Example Value
PlatformShortName ICESat
PlatformLongName Ice, Cloud, and Land Elevation Satellite
PlatformType Spacecraft

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument

Attribute Example Value
GLAS InstrumentContainer
GPS InstrumentContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS

Attribute Example Value
InstrumentShortName GLAS
InstrumentLongName Geoscience Laser Altimeter System
InstrumentTechnique Laser Altimetry and Light Detection and Radar
NumberofSensors 3

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor

Attribute Example Value
LA SensorContainer
PC SensorContainer
CD SensorContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/CD

Attribute Example Value
SensorShortName CD
SensorLongName Cloud LIDAR
SensorTechnique Measure of 1064nm return energy in 75m bins from 20km to surface

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/CD/SensorCharacteristic

Attribute Example Value
wavelength SensorCharacteristicContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/CD/SensorCharacteristic/wavelength

Attribute Example Value
SensorCharacteristicName wavelength
SensorCharacteristicDescription detector
SensorCharacteristicDataType varchar
SensorCharacteristicUnit nanometer
SensorCharacteristicValue 1064 nm

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/LA

Attribute Example Value
SensorShortName LA
SensorLongName Laser Altimeter
SensorTechnique Exact Measurement of Time between Transmit Pulse and receive ground return

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/LA/SensorCharacteristic

Attribute Example Value
wavelength SensorCharacteristicContainer
waveform SensorCharacteristicContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/LA/SensorCharacteristic/waveform

Attribute Example Value
SensorCharacteristicName waveform
SensorCharacteristicDescription digitizer
SensorCharacteristicDataType varchar
SensorCharacteristicUnit counts
SensorCharacteristicValue 0-255

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/LA/SensorCharacteristic/wavelength

Attribute Example Value
SensorCharacteristicName wavelength
SensorCharacteristicDescription transmission
SensorCharacteristicDataType varchar
SensorCharacteristicUnit nanometer
SensorCharacteristicValue 1064 nm

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/PC

Attribute Example Value
SensorShortName PC
SensorLongName Photon Counter for the 532 nm Aerosol Returns
SensorTechnique Counting of 532nm photon return in 75m bins 40km to surface

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/PC/SensorCharacteristic

Attribute Example Value
wavelength SensorCharacteristicContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GLAS/Sensor/PC/SensorCharacteristic/wavelength

Attribute Example Value
SensorCharacteristicName wavelength
SensorCharacteristicDescription detector
SensorCharacteristicDataType varchar
SensorCharacteristicUnit nanometer
SensorCharacteristicValue 532nm

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GPS

Attribute Example Value
InstrumentShortName GPS
InstrumentLongName Global Positioning System Receiver
InstrumentTechnique Radionavigation
NumberofSensors 1

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GPS/Sensor

Attribute Example Value
GPS_Receiver SensorContainer

/METADATA/COLLECTIONMETADATA/Platform/ICESat/Instrument/GPS/Sensor/GPS_Receiver

Attribute Example Value
SensorShortName GPS Receiver
SensorLongName Dual frequency GPS receiver
SensorTechnique Pseudorange and carrier phase

/METADATA/COLLECTIONMETADATA/ProcessingLevel

Attribute Example Value
ProcessingLevelDescription Sensor Measurements
ProcessingLevelID 1A

/METADATA/COLLECTIONMETADATA/Spatial

Attribute Example Value
SpatialCoverageType Horizontal
WestBoundingCoordinate -180.0
NorthBoundingCoordinate 90.0
EastBoundingCoordinate 180.0
SouthBoundingCoordinate -90.0

/METADATA/COLLECTIONMETADATA/StorageMediumClass

Attribute Example Value
StorageMedium Online

/METADATA/COLLECTIONMETADATA/Temporal

Attribute Example Value
TimeType UTC
DateType J2000
TemporalRangeType Continuous Range
PrecisionofSeconds 2
EndsatPresentFlag Y
RangeBeginningDate 2003-01-13
RangeBeginningTime 00:00:00
RangeEndingDate 2010-01-13
RangeEndingTime 00:00:00

/METADATA/INVENTORYMETADATA

Attribute Example Value
PGEVersion Version 1.0
ShortName GLAH01
VersionID 33
RangeBeginningTime 11:42:39
RangeEndingTime 12:04:04
RangeBeginningDate 2005-11-01
RangeEndingDate 2005-11-01

/METADATA/INVENTORYMETADATA/ECSDataGranule

Attribute Example Value
ReprocessingPlanned no further update anticipated
ReprocessingActual reprocessed
LocalGranuleID GLAH01_033_2113_002_0085_1_01_0001.H5
ProductionDateTime 2013-03-13T10:54:04
LocalVersionID 33

/METADATA/INVENTORYMETADATA/InputGranule

Attribute Example Value
InputPointer gla01_test.ctl, tai-utc.dat, GLA01_033_2113_002_0085_1_01_0001.DAT, DsESDTGlGLAH01.033.desc

/METADATA/INVENTORYMETADATA/OrbitCalculatedSpatialDomain

Attribute Example Value
OrbitNumber 15247
StartOrbitNumber 15247
StopOrbitNumber 15247
EquatorCrossingLongitude 127.56265
EquatorCrossingTime 11:29:14
EquatorCrossingDate 2005-11-01

/METADATA/INVENTORYMETADATA/ProductSpecificMetadata

Attribute Example Value
Track 85
Track_Segment 1
Instrument_State 373340
ReferenceOrbit 1
Cycle 2
Instance 13
Instrument_State_Date 2005-10-21
Instrument_State_Time 00:00:00
identifier_product_doi 10.5067/ICESAT/GLAS/DATA101
identifier_file_uuid D65E7C2A-7BC1-444F-AE6F-991DAD0B45FF
identifier_product_doi_authority http://dx.doi.org

/METADATA/PROVENANCE

/METADATA/PROVENANCE/STEP_1

Attribute Example Value
ProcessDateTime 2011-06-01T19:14:02

/METADATA/PROVENANCE/STEP_1/ProcessAgent

Attribute Example Value
Name glas_l1a
Type 1A
Version 6.0.1
Description This process is an instantiation of the GLAS Science Algorithm Software (GSAS) 1A ATBDs.

/METADATA/PROVENANCE/STEP_1/ProcessInput

Attribute Example Value
Name GLA00_003_20051101_060000_01_0012.DAT, GLA00_003_20051101_120000_01_0012.DAT, GLA00_003_20051101_060004_01_0013.DAT, GLA00_003_20051101_120021_01_0013.DAT, GLA00_003_20051101_060000_01_0015.DAT, GLA00_003_20051101_120000_01_0015.DAT, GLA00_003_20051101_060000_01_0017.DAT, GLA00_003_20051101_120000_01_0017.DAT, GLA00_003_20051101_060000_01_0019.DAT, GLA00_003_20051101_120000_01_0019.DAT, GLA00_003_20051101_060003_01_0020.DAT, GLA00_003_20051101_120003_01_0020.DAT, GLA00_003_20051101_060003_01_0021.DAT, GLA00_003_20051101_120003_01_0021.DAT, GLA00_003_20051101_060015_01_0022.DAT, GLA00_003_20051101_120015_01_0022.DAT, GLA00_003_20051101_060015_01_0023.DAT, GLA00_003_20051101_120015_01_0023.DAT, GLA00_003_20051101_060003_01_0024.DAT, GLA00_003_20051101_120003_01_0024.DAT, GLA00_003_20051101_060003_01_0025.DAT, GLA00_003_20051101_120003_01_0025.DAT, GLA00_003_20051101_060000_01_0026.DAT, GLA00_003_20051101_120000_01_0026.DAT, GLA00_003_20051101_060031_01_0050.DAT, GLA00_003_20051101_120031_01_0050.DAT, GLA00_003_20051101_060003_01_0055.DAT, GLA00_003_20051101_120003_01_0055.DAT, GLA00_003_20051101_060000_01_1984.DAT, GLA00_003_20051101_120000_01_1984.DAT, anc07_033_02_0000.dat, anc07_033_02_0001.dat, anc07_033_02_0002.dat, anc07_033_02_0003.dat, anc07_033_02_0004.dat, anc07_033_02_0005.dat, anc07_033_02_0006.dat, ANC20_005_20051031_235947_01_0001.DAT, anc25_005_20090101_000000_01_0000.dat, ANC29_033_20051101_060000_01_0001.DAT, ANC29_033_20051101_120000_01_0001.DAT, ANC32_033_20051101_060000_01_0001.DAT, ANC32_033_20051101_120000_01_0001.DAT, ANC33_001_20100406_000000_01_0000.DAT, anc45_033_03_0001.dat, anc45_033_03_0002.dat, anc45_033_03_0003.dat, anc45_033_03_0004.dat
Type GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, GLA00, anc07, anc07, anc07, anc07, anc07, anc07, anc07, ANC20, anc25, ANC29, ANC29, ANC32, ANC32, ANC33, anc45, anc45, anc45, anc45
Version 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 003, 033, 033, 033, 033, 033, 033, 033, 005, 005, 033, 033, 033, 033, 001, 033, 033, 033, 033

/METADATA/PROVENANCE/STEP_1/ProcessOutput

Attribute Example Value
Name GLA01_033_2113_002_0085_1_01_0001.DAT
Type GLA01
Version 33

/METADATA/PROVENANCE/STEP_2

Attribute Example Value
ProcessDateTime 2013-03-13T10:54:04.000000Z

/METADATA/PROVENANCE/STEP_2/ProcessAgent

Attribute Example Value
Name GLA01_h5_convert
Type Data_Reformat
Version Version 1.0 (May 2012)
Description GLA01 Conversion PGE

/METADATA/PROVENANCE/STEP_2/ProcessInput

Attribute Example Value
Name ./gla01_test.ctl, ../../data/tai-utc.dat, in/GLA01_033_2113_002_0085_1_01_0001.DAT, ../../glas_hdf/data/esdts/DsESDTGlGLAH01.033.desc
Type IN_CNTL, IN_ANC_TAIUTC, IN_GLA01, IN_ESDT
Version 0, 0, 1, 1

/METADATA/PROVENANCE/STEP_2/ProcessOutput

Attribute Example Value
Name out/GLAH01_033_2113_002_0085_1_01_0001.H5
Type OUT_GLAH01
Version 1
UUID D65E7C2A-7BC1-444F-AE6F-991DAD0B45FF
DOI 10.5067/ICESAT/GLAS/DATA101

Page last updated: 04/08/13

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