Data Sets

The following tables, organized by sensor/instrument type, list the NASA IceBridge data products currently available from NSIDC DAAC. To access the documentation and data, click on the data set title.

Contact NSIDC User Services for more information on the availability of data.

To view a listing of instruments organized by data product and campaign go to OIB-Instrument-Data-By-Campaign.pdf.

Radar / Radar Sounder

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IRACC1B IceBridge Accumulation Radar L1B Geolocated Radar Echo Strength Profiles, Version 1

North America

Greenland
  • 2010-05-06 to 2012-05-07
 Glacier Topography/Ice Sheet Topography, Radar Imagery, Sea Ice Elevation, Snow Cover
IRACC1B IceBridge Accumulation Radar L1B Geolocated Radar Echo Strength Profiles, Version 2

North America

Greenland
  • 2013-03-21 to 2017-11-25
 Glacier Topography/Ice Sheet Topography, Radar Imagery, Sea Ice Elevation, Snow Cover
IDBMG4 IceBridge BedMachine Greenland, Version 2

North America

Greenland
  • 2007-01-01 to 2007-12-31
 Bedrock, Ice Thickness, Surface Elevation
IDBMG4 IceBridge BedMachine Greenland, Version 3

North America

Greenland
  • 1993-01-01 to 2016-12-31
 Bathymetry, Bed Elevation, Ice Thickness, Surface Elevation
IR1HI0 IceBridge HiCARS 1 L0 Raw Return Energy Amplitudes, Version 1

Antarctica
  • 2009-03-30 to 2010-12-19
 Return Power
IR1HI1B IceBridge HiCARS 1 L1B Time-Tagged Echo Strength Profiles, Version 1

Antarctica
  • 2009-01-02 to 2010-12-29
 Phase and Amplitude, Return Power
IR1HI2 IceBridge HiCARS 1 L2 Geolocated Ice Thickness, Version 1

Antarctica
  • 2009-01-02 to 2010-12-21
 Glacier Elevation/Ice Sheet Elevation, Ice Depth/Thickness, Sea Ice Elevation, Terrain Elevation
IR2HI0 IceBridge HiCARS 2 L0 Raw Return Energy Amplitudes, Version 1

Antarctica
  • 2009-03-30 to 2010-02-26
 Return Power
IR2HI1B IceBridge HiCARS 2 L1B Time-Tagged Echo Strength Profiles, Version 1

Antarctica
  • 2010-10-28 to 2013-01-25
 Phase and Amplitude, Return Power
IR2HI2 IceBridge HiCARS 2 L2 Geolocated Ice Thickness, Version 1

Antarctica
  • 2010-12-05 to 2013-01-20
 Bed Elevation, Ice Depth/Thickness, Surface Elevation, Surface Range
IRKUB1B IceBridge Ku-Band Radar L1B Geolocated Radar Echo Strength Profiles, Version 1

North America

Greenland

Antarctica

Arctic
  • 2010-03-26 to 2012-04-30
 Radar Imagery, Sea Ice Elevation
IRKUB1B IceBridge Ku-Band Radar L1B Geolocated Radar Echo Strength Profiles, Version 2

North America

Greenland

Antarctica

Arctic
  • 2012-10-12 to 2016-11-18
 Radar Imagery, Sea Ice Elevation
IRMCR1B IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles, Version 1

North America

Greenland

Antarctica
  • 2009-10-16 to 2012-11-06
 Radar Imagery, Sea Ice Elevation
IRMCR1B IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles, Version 2

North America

Greenland

Antarctica
  • 2012-10-12 to 2017-11-25
 Radar Imagery, Sea Ice Elevation
IRMCR2 IceBridge MCoRDS L2 Ice Thickness, Version 1

North America

Greenland

Antarctica
  • 2009-10-16 to 2017-11-25
 Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness
IRMCR3 IceBridge MCoRDS L3 Gridded Ice Thickness, Surface, and Bottom, Version 2

North America

Greenland

Antarctica
  • 2006-01-01 to 2012-12-31
 Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Glacier Topography/Ice Sheet Topography
IRPAR2 IceBridge PARIS L2 Ice Thickness, Version 1

North America

Greenland
  • 2009-04-01 to 2009-05-02
 Ice Depth/Thickness
IRTIT3 IceBridge Radar L3 Tomographic Ice Thickness, Version 1

North America

Greenland

Antarctica
  • 2010-11-20 to 2013-04-20
 Ice Thickness
IRTTE3 IceBridge Radar L3 Tomographic Thickness Error, Version 1

North America

Greenland

Antarctica
  • 2010-11-20 to 2013-04-20
 Ice Thickness
IRSNO1B IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles, Version 2

Arctic

Antarctica

North America

Greenland
  • 2009-03-31 to 2017-11-25
 Glacier Topography/Ice Sheet Topography, Radar Imagery, Sea Ice Elevation, Snow Cover
IRWIS2 IceBridge WISE L2 Ice Thickness and Surface Elevation, Version 1

North America

United States Of America

Alaska
  • 2012-03-16 to 2012-03-25
 Ice Thickness

Meteorlogical / Atmospheric / In flight / In cabin

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
ICHEM1B IceBridge Atmospheric Chemistry L1B Data, Version 1

Antarctica
  • 2009-10-12 to 2009-11-24
 Atmospheric Chemistry, Carbon and Hydrocarbon Compounds, Carbon Dioxide, Carbon Monoxide, Carbon Tetrachloride, Chlorinated Hydrocarbons, Chlorofluorocarbons, Halons, Hydrochlorofluorocarbons, Methane, Methyl Bromide, Methyl Chloride
IANCR1B IceBridge NCAR Navigation, State Parameter, and Microphysics LRT Data, Version 1

Antarctica
  • 2011-10-04 to 2011-11-03
 Airspeed/Ground Speed, Air Temperature, Altitude, Attitude Characteristics, Dew Point Temperature, Differential Pressure, Flight Level Winds, Humidity, Static Pressure, Wind Direction, Wind Speed
IAMET1B IceBridge NSERC L1B Geolocated Meteorologic and Surface Temperature Data, Version 1

Antarctica
  • 2009-10-12 to 2012-11-10
 Air Temperature, Atmospheric Pressure, Attitude Characteristics, Dew Point Temperature, Humidity, Skin Temperature, Soil Temperature, Static Pressure, Total Temperature

Laser Altimeter

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
ILUTP0 IceBridge Riegl Laser Altimeter L0 Raw Ranges, Version 1

Antarctica
  • 2009-01-01 to 2010-12-30
 Range To Target
ILUTP1B IceBridge Riegl Laser Altimeter L1B Time-Tagged Laser Ranges, Version 1

NORTH AMERICA

GREENLAND

ANTARCTICA
  • 2008-12-29 to 2013-01-26
 Range To Target
ILUTP2 IceBridge Riegl Laser Altimeter L2 Geolocated Surface Elevation Triplets, Version 1

North America

Greenland

Antarctica
  • 2008-12-29 to 2013-01-22
 Surface Range

Camera / Optical

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IOCAM1B IceBridge CAMBOT L1B Geolocated Images, Version 1

North America

Greenland

Antarctica
  • 2009-03-31 to 2013-04-26
 Visible Imagery
IODCC0 IceBridge DMS L0 Camera Calibration, Version 1

North America

Greenland

Antarctica
  • 2009-09-17 to 2018-04-19
 CALIBRATION
IODMS0 IceBridge DMS L0 Raw Imagery, Version 1

Antarctica

North America

Greenland
  • 2009-10-16 to 2018-04-19
 Visible Imagery
IODMS1B IceBridge DMS L1B Geolocated and Orthorectified Images, Version 1

North America

Greenland

Antarctica
  • 2009-10-16 to 2018-04-19
 Visible Imagery
IODIM3 IceBridge DMS L3 Ames Stereo Pipeline Orthorectified Images, Version 1

ANTARCTICA

NORTH AMERICA

GREENLAND

UNITED STATES OF AMERICA

ALASKA
  • 2016-04-19 to 2017-07-25
 VISIBLE IMAGERY
IODEM3 IceBridge DMS L3 Ames Stereo Pipeline Photogrammetric DEM, Version 1

ANTARCTICA

NORTH AMERICA

GREENLAND

UNITED STATES OF AMERICA

ALASKA
  • 2016-04-19 to 2017-07-25
 GLACIER ELEVATION/ICE SHEET ELEVATION
IODMS3 IceBridge DMS L3 Photogrammetric DEM, Version 1

Antarctica

North America

Greenland
  • 2011-03-18 to 2013-11-26
 Visible Imagery
IOLVIS1A IceBridge LVIS L1A Geotagged Images, Version 1

NORTH AMERICA

GREENLAND
  • 2017-08-25 to 2017-09-20
 VISIBLE IMAGERY

Pyrometer

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IAKST1B IceBridge KT19 IR Surface Temperature, Version 1

North America

Greenland

Arctic

Antarctica
  • 2011-10-12 to 2017-11-25
 Ice Temperature, Snow/Ice Temperature

Lidar

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
ILATM0 IceBridge ATM L0 Raw Ranges, Version 1

Arctic

Antarctica

North America

Greenland
  • 2009-10-16 to 2011-05-16
ILATMW1B IceBridge ATM L1B Elevation and Return Strength with Waveforms, Version 1

NORTH AMERICA

GREENLAND

ANTARCTICA

ARCTIC
  • 2017-07-17 to 2017-11-25
 GLACIER ELEVATION/ICE SHEET ELEVATION
ILATM1B IceBridge ATM L1B Elevation and Return Strength, Version 2

Arctic

Antarctica

North America

Greenland
  • 2013-03-20 to 2017-11-25
 Glacier Elevation/Ice Sheet Elevation
ILATM1B IceBridge ATM L1B Qfit Elevation and Return Strength, Version 1

Arctic

Antarctica

North America

Greenland
  • 2009-03-31 to 2012-11-08
 Glacier Elevation/Ice Sheet Elevation
ILATM2 IceBridge ATM L2 Icessn Elevation, Slope, and Roughness, Version 2

Arctic

Antarctica

North America

Greenland
  • 2009-03-31 to 2017-11-25
 Glacier Elevation/Ice Sheet Elevation, Ice Roughness
IDHDT4 IceBridge ATM L4 Surface Elevation Rate of Change, Version 1

North America

Greenland

Antarctica

Arctic

North America

Canada
  • 1993-06-23 to 2017-05-11
 Surface Elevation
ILVIS0 IceBridge LVIS L0 Raw Ranges, Version 1

North America

Greenland

Antarctica

North America

United States Of America

Alaska
  • 2009-04-14 to 2015-10-29
 Terrain Elevation
ILVIS1B IceBridge LVIS L1B Geolocated Return Energy Waveforms, Version 1

North America

Greenland

Antarctica
  • 2009-04-14 to 2012-05-10
 Terrain Elevation
ILVIS1B IceBridge LVIS L1B Geolocated Return Energy Waveforms, Version 2

Antarctica

North America

Greenland
  • 2013-10-30 to 2017-09-20
 Terrain Elevation
ILVIS2 IceBridge LVIS L2 Geolocated Surface Elevation Product, Version 1

North America

Greenland

Antarctica

Arctic
  • 2009-04-14 to 2017-09-20
 Terrain Elevation
ILVGH1B IceBridge LVIS-GH L1B Geolocated Return Energy Waveforms, Version 1

North America

Greenland

Antarctica
  • 2013-10-30 to 2013-11-14
 Terrain Elevation
ILVGH2 IceBridge LVIS-GH L2 Geolocated Surface Elevation Product, Version 1

North America

Greenland

Antarctica

Arctic
  • 2013-10-26 to 2013-11-14
 Surface Elevation
ILSNP4 IceBridge Merged Photon Counting Lidar/Profiler L4 Surface Slope and Elevations, Version 1

Antarctica
  • 2010-11-25 to 2012-12-04
 Glacier Elevation/Ice Sheet Elevation, Sea Ice Elevation
ILNSAW1B IceBridge Narrow Swath ATM L1B Elevation and Return Strength with Waveforms, Version 1

Antarctica
  • 2017-10-29 to 2017-11-22
 SEA ICE ELEVATION
ILNSA1B IceBridge Narrow Swath ATM L1B Elevation and Return Strength, Version 2

North America

Greenland

Arctic

Antarctica
  • 2013-03-20 to 2017-11-22
 Sea Ice Elevation
ILNSA1B IceBridge Narrow Swath ATM L1B Qfit Elevation and Return Strength, Version 1

Antarctica

Arctic

North America

Greenland
  • 2011-03-16 to 2012-11-08
 Sea Ice Elevation
ILSNP1B IceBridge Photon Counting Lidar L1B Subset Geolocated Photon Elevations, Version 1

Antarctica
  • 2010-11-25 to 2012-12-11
 Lidar
ILSIG1B IceBridge Photon Counting Lidar L1B Unclassified Geolocated Photon Elevations, Version 1

Antarctica
  • 2011-11-29 to 2011-12-23
 Glacier Topography/Ice Sheet Topography
ILSIG0 IceBridge Sigma Space Lidar L0 Raw Time-of-Flight Data, Version 1

North America

Greenland

Antarctica
  • 2010-11-25 to 2011-12-23
 Time-Of-Flight
ILSSP0 IceBridge Sigma Space Prototype L0 Raw Time-of-Flight Data, Version 1

Antarctica
  • 2009-01-01 to 2009-12-31
 Lidar
ILAKP1B IceBridge UAF Lidar Profiler L1B Geolocated Surface Elevation Triplets, Version 1

North America

United States Of America

Alaska

North America

Canada

British Columbia
  • 2009-05-22 to 2009-06-02
 Glacier Topography/Ice Sheet Topography
ILAKS1B IceBridge UAF Lidar Scanner L1B Geolocated Surface Elevation Triplets, Version 1

Antarctica

North America

United States Of America

Alaska
  • 2009-08-19 to 2017-12-18
 Glacier Topography/Ice Sheet Topography

Magnetometer

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IMFGM0 IceBridge Flux Gate Magnetometer L0 Raw Magnetic Field, Version 1

Antarctica
  • 2009-01-01 to 2010-12-18
 Magnetic Field
IMGEO0 IceBridge Geometrics 823A Cesium Magnetometer L0 Raw Magnetic Field, Version 1

Antarctica
  • 2009-01-01 to 2010-12-18
 Magnetic Field
IMGEO1B IceBridge Geometrics 823A Cesium Magnetometer L1B Time-Tagged Magnetic Field, Version 1

Antarctica
  • 2009-11-16 to 2012-12-11
 Magnetic Field
IMGEO2 IceBridge Geometrics 823A Cesium Magnetometer L2 Geolocated Magnetic Anomalies, Version 1

Antarctica
  • 2009-11-16 to 2012-12-11
 Magnetic Field
IMCS30 IceBridge Scintrex CS-3 Cesium Magnetometer L0 Raw Magnetic Field, Version 1

North America

Greenland
  • 2011-03-15 to 2012-05-17
 Magnetic Field
IMCS31B IceBridge Scintrex CS-3 Cesium Magnetometer L1B Geolocated Magnetic Anomalies, Version 1

North America

Greenland
  • 2011-03-16 to 2012-05-17
 Magnetic Field
IMCS31B IceBridge Scintrex CS-3 Cesium Magnetometer L1B Geolocated Magnetic Anomalies, Version 2

Antarctica
  • 2013-11-18 to 2013-11-28
 Magnetic Field

Pressure Altimeter

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IAPRS0 IceBridge Paroscientific L0 Pressure Altimeter Raw Air Pressure, Version 1

Antarctica
  • 2009-01-01 to 2010-12-30
 Atmospheric Pressure Measurements
IAPRS1B IceBridge Paroscientific L1B Pressure Altimeter Time-Tagged Air Pressure, Version 1

Antarctica
  • 2008-12-29 to 2013-01-26
 Atmospheric Pressure Measurements

Position / Attitude / GPS-IMU

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IPUTG0 IceBridge GPS L0 Raw Satellite Navigation Data, Version 1

Antarctica
  • 2009-11-08 to 2010-12-30
 Airspeed/Ground Speed, Attitude Characteristics, Data Synchronization Time, Platform Characteristics
IPUTN1B IceBridge GPS L1B Time-Tagged Real-Time Position and Attitude Solution, Version 1

Antarctica
  • 2010-11-18 to 2012-12-29
 Elevation, Heading, Pitch, Roll
IPUTG1B IceBridge GPS/IMU L1B Primary Position and Attitude Solution, Version 1

Antarctica
  • 2010-12-12 to 2012-12-29
 Accelerations, Attitude Characteristics, Elevation
IPUTI0 IceBridge IMU L0 Raw Inertial Measurement Unit Data, Version 1

Antarctica
  • 2009-01-01 to 2010-12-30
 Attitude Characteristics
ITKTC0 IceBridge L0 Raw Kinematics GPS Time Codes, Version 1

Antarctica
  • 2009-01-01 to 2010-12-30
 Data Synchronization Time
IPPLV1B IceBridge LVIS POS/AV L1B Corrected Position and Attitude Data, Version 1

Antarctica

North America

Greenland

United States Of America

Alaska
  • 2011-04-15 to 2014-10-04
 Attitude Characteristics
IPAPP1B IceBridge POS/AV L1B Corrected Position and Attitude Data, Version 1

Antarctica

North America

Greenland
  • 2009-03-27 to 2018-04-19
 Attitude Characteristics
IPUAF1B IceBridge UAF GPS/IMU L1B Corrected Position and Attitude Data, Version 1

North America

United States Of America

Alaska
  • 2009-08-19 to 2011-09-12
 Attitude Characteristics

Gravimeter

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IGBGM0 IceBridge BGM-3 Gravimeter L0 Raw Accelerations, Version 1

Antarctica
  • 2009-01-01 to 2010-12-18
 Gravity
IGBGM1B IceBridge BGM-3 Gravimeter L1B Time-Tagged Accelerations, Version 1

Antarctica
  • 2008-12-31 to 2011-12-23
 Gravity
IGBGM2 IceBridge BGM-3 Gravimeter L2 Geolocated Free Air Anomalies, Version 1

Antarctica
  • 2009-01-08 to 2011-12-21
 Gravity
IGCMG1B IceBridge CMG 1A Dynamic Gravity Meter Time-Tagged L1B Vertical Accelerations, Version 1

Antarctica
  • 2012-11-13 to 2013-01-14
 Accelerations
IGCMG2 IceBridge CMG GT-1A Gravimeter L2 Geolocated Free Air Gravity Disturbances, Version 1

Antarctica
  • 2012-11-22 to 2012-12-04
 Gravity
IGLGS1B IceBridge LDEO Gravimeter Suite L1B Geolocated Free Air Gravity Anomalies, Version 1

North America

Greenland
  • 2017-03-22 to 2017-03-31
 Gravity
IGGRV1B IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 1

Antarctica

North America

Greenland
  • 2009-10-16 to 2017-11-26
 Gravity
IGBTH3 IceBridge Sander AIRGrav L3 Bathymetry, Version 1

Antarctica
  • 2009-10-01 to 2009-11-30
 Bathymetry
IGBTH4 IceBridge Sander AIRGrav L4 Bathymetry, Version 1

North America

Greenland

Antarctica
  • 2010-01-01 to 2016-12-31
 Bathymetry
IGZLS1B IceBridge ZLS Dynamic Gravity Meter Time-Registered L1B Vertical Accelerations, Version 1

Antarctica
  • 2011-11-29 to 2011-12-21
 Gravity

Derived Products

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IDBMG4 IceBridge BedMachine Greenland, Version 2

North America

Greenland
  • 2007-01-01 to 2007-12-31
 Bedrock, Ice Thickness, Surface Elevation
IDBMG4 IceBridge BedMachine Greenland, Version 3

North America

Greenland
  • 1993-01-01 to 2016-12-31
 Bathymetry, Bed Elevation, Ice Thickness, Surface Elevation
IDCSI4 IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness, Version 1

Antarctica

North America

Greenland
  • 2009-03-19 to 2013-04-25
 Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth
IDCSI2 IceBridge Sea Ice Freeboard, Snow Depth, and Thickness, Version 1

Antarctica
  • 2009-10-21 to 2010-10-10
 Freeboard, Ice Depth/Thickness, Ice Roughness, Sea Ice Elevation, Snow Depth

Flight Reports

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
IFLTRPT IceBridge Mission Flight Reports, Version 1

North America

United States Of America

Alaska

Arctic

Antarctica

North America

Greenland
  • 2009-03-30 to 2017-07-27
 Flight Data Logs

IceBridge Related

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
RDWES1B CryoSat-2 Level-1B Waveforms, Sea Ice Elevation, and Surface Roughness, Version 1

Arctic
  • 2010-09-15
 Sea Ice Elevation, Surface Roughness
RDEFT4 CryoSat-2 Level-4 Sea Ice Elevation, Freeboard, and Thickness, Version 1

Arctic
  • 2010-08-27
 Freeboard, Ice Depth/Thickness, Ice Roughness
RGGRV1B IceBridge-Related Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 1

NORTH AMERICA

GREENLAND

ANTARCTICA
  • 2012-04-29 to 2016-12-31
 GRAVITY
RDGBV4 Level-4 9ka Greenland Ice Sheet Balance Velocity, Version 1

North America

Greenland
  • 1993-06-23 to 2013-04-26
 Ice Velocity
RDBTS4 Likely Basal Thermal State of the Greenland Ice Sheet, Version 1

North America

Greenland
  • 1993-06-23 to 2013-04-26
 Thermal Properties
RRRAG4 Radiostratigraphy and Age Structure of the Greenland Ice Sheet, Version 1

North America

Greenland
  • 1993-06-23 to 2013-04-26
 Age at Ice-Thickness-Normalized Depths, Age of Internal Reflections, Depth at Specific Ages, Geometry of Internal Reflections

Pre-IceBridge Data Products

Data Set ID Title Location(s) Temporal Coverage Parameter(s)
BLATM0 Pre-IceBridge ATM L0 Raw Ranges, Version 1

North America

Canada

North America

United States Of America

Alaska

Arctic

Antarctica
  • 2005-05-05 to 2008-10-30
BLATM1B Pre-IceBridge ATM L1B Qfit Elevation and Return Strength, Version 1

North America

Greenland

Antarctica

Arctic
  • 1993-06-23 to 2008-10-30
 Glacier Elevation/Ice Sheet Elevation
BLATM2 Pre-IceBridge ATM L2 Icessn Elevation, Slope, and Roughness, Version 1

Antarctica

North America

Greenland

Arctic
  • 1993-06-23 to 2008-10-30
 Glacier Elevation/Ice Sheet Elevation
BLVIS0 Pre-IceBridge LVIS L0 Raw Ranges, Version 1

North America

Greenland
  • 2007-09-20 to 2007-09-21
 Terrain Elevation
BLVIS2 Pre-IceBridge LVIS L2 Geolocated Ground Elevation and Return Energy Quartiles, Version 1

North America

Greenland
  • 2007-09-20 to 2007-09-21
 Terrain Elevation
BRMCR1B Pre-IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles, Version 1

Arctic

Antarctica
  • 1993-06-23 to 2007-09-23
 Radar Imagery, Sea Ice Elevation
BRMCR2 Pre-IceBridge MCoRDS L2 Ice Thickness, Version 1

Antarctica

North America

Greenland
  • 1993-06-23 to 2007-09-23
 Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness