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MOD29 Global Attributes

Three EOSDIS Core System (ECS) global attributes are written during generation of the MOD29 product, and are stored as long character strings in parameter value language (PVL) format. Product Specific attributes are also generated.

Product Specific Attributes


Object Name Comments Sample Value
ShortName ESDT¹ name of product MOD29
VersionID ECS Version 1
ReprocessingActual Number of times processed processed once
ReprocessingPlanned Expect that products will be reprocessed at least once further update is anticipated
LocalGranuleID MOD29.A2000306.2125.002.2001022164020.hdf
DayNightFlag Can be Day, Night, or Both Day
ProductionDateTime Time granule was produced 2001-01-19T20:4039:000Z
LocalVersionID Version of algorithm delivered from the SCF². SCF V2.2.3
PGEVersion Version of production generation executable 2.4.2
InputPointer Location of the three input files in the production system MOD20HKM.A2000306.2125.002.2000329123327.hdf
RangeBeginningDate Beginning date of the first scan line in the swath 2000-11-01
RangeBeginningTime Beginning time of the first scan line in the swath 21:15:00.000000
RangeEndingDate Ending date of the last scan line in the swath 2000-11-01
RangeEndingTime Ending time of the last scan line in the swath 21:20:00.000000
ExclusionGRingFlag N
GRingPointLatitude Geographic latitude bounds of swath coverage [-172.918503, -96.373253, -126.193184, -166.482391]
GringPointLongitude Geographic longitude bounds of swath coverage [79.774231, 68.789673, 56.226749, 62.022076]
GRingPointSequenceNo [1,2,3,4]
OrbitNumber 4653
EquatorCrossingLongitude -163.416015
EquatorCrossingDate 2000-11-01
EquatorCrossingTime 21:36:54.673540
ParameterName Parameter for which QA statistics are given in this metadata object Sea Ice by Reflectance, Ice Surface Temperature
AutomaticQualityFlag Result of automated checks during the run of the algorithm that screens for significant amounts
of anomalous data
Passed, Passed
AutomaticQualityFlagExplanation Explanation of result of automated QA checks made during execution No errors detected in processing, No errors detected in processing
OperationalQualityFlag Set by production system Passed, Passed
OperationalQualityFlagExplanation Explanation of Operational Flag Nominal production, Nominal production
ScienceQualityFlag Set by snow investigator after post-production investigation Not being investigated, Not being investigated
ScienceQualityFlagExplanation Explanation of Science Flag Not selected for investigation, Not selected for investigation
QAPercentMissingData 0-100 1, 1
QAPercentCloudCover 0-100 34, 34
AncillaryInputPointer Location of geolocation input product in production system MOD03.A2000306.2115.002.2000329112017.hdf
AncillaryInputType Type of ancillary data referenced by pointer Geolocation
AssociatedSensorShortName Three band regions used in the algorithm, three instances in the metadata VNIR, SWIR, TIR
AssociatedPlatformShortName Terra, Terra, Terra
AssociatedInstrumentShortName MODIS, MODIS, MODIS
Product Specific Attributes (PSA)
QAPercentGoodQuality Summary quality assurance statistic based on the thermal data. Range is 0-100. 90
QAPercentOtherQuality 0
QAPercentNotProducedCloud 10
QAPercentNotProducedOther 0
GranuleNumber Unique granule identifier 257
SeaIcePercent Summary percentage of sea ice detected (0-100) 42
¹ Earth Science Data Type (ESDT)
² Science Computing Facility (SCF)


This attribute contains information relevant to production of the data product. It also contains an alternate bounding of geographic coverage of the swath. These data are useful in determining what version of the algorithm was used to generate the product.

Object Name Comment Sample Value
EastBoundingCoordinate Extent of swath coverage, in latitude and longitude -96.373256
WestBoundingCoordinate -172.918502
NorthBounding Coordinate 80.036044
SouthBounding Coordinate 56.226751
AlgorithmPackageAcceptanceDate Algorithm descriptors 2000-12-22
AlgorithmPackageMaturityCode PREL
AlgorithmPackageName MOD29_PR29 Terra or Aqua full and coarse products
AlgorithmPackageVersion Version
InstrumentName Moderate-Resolution Imaging SpectroRadiometer
PlatformShortName Terra
ProcessingDateTime 2001-01-22T16:41:07.000Z
LongName MODIS/Terra Sea Ice Extent 5-Min L2 Swath 1km
Processing Center MODAPS
SPSOParameters none
LocalInputGranuleID Names of the three input files [MOD-2HKM, ...]
DESCRRevision Version of MCF¹ 1.2
¹ MCF = Metadata Configuration File


This attribute is used by the HDF-EOS toolkit to specify the mapping relationships between the geolocation data and the snow cover Scientific Data Sets (SDSs). Mapping relationships are unique in HDF-EOS and are stored in the product using HDF structures. A description of the mapping relationships is not provided here.

Object Definition
DIMENSION_1 Coarse_swath_lines_5km
DIMENSION_2 Coarse_swath_pixels_5km
DIMENSION_3 Along_swath_lines_1km
DIMENSION_4 Along_swath_pixels_1km
DIMENSIONMAP_1 GeoDimension=Coarse_swath_pixels_5km
DIMENSIONMAP_2 GeoDimension=Coarse_swath_lines_5km
GEOFIELD_1 GeoFieldName=Latitude
GEOFIELD_2 GeoFieldName=Longitude
DATAFIELD_1 DataFieldName=Sea Ice by Reflectance
DATAFIELD_2 DataFieldName=Sea Ice by Reflectance Pixel QA
DATAFIELD_3 DataFieldName=Ice Surface Temperature
DATAFIELD_4 DataFieldName=Ice Surface Temperature Pixel QA
DATAFIELD_5 DataFieldName=Sea Ice by IST
DATAFIELD_6 DataFieldName=Combined Sea Ice

Product Specific Attributes

Attribute Name Comment Sample Value
L1BCalibrationQuality marginal
L1BMissionPhase A&E
L1BNadirPointing Yes
L1BVersionID Version of L1B processing algorithm 2000-11-01
L1BAutoQA_EV_1KM_RefsB Result of generalized quality analysis of L1B data Suspect
SCFAlgorithmVersion SCF versioning tracking information $Id: MOD_PR29_AA...