• On Wednesday, October 5, from 9 a.m. to 12 p.m. (Mountain Time), the following data collections may not be available due to planned system maintenance: AMSR Unified, AMSR-E, Aquarius, High Mountain Asia, IceBridge, ICESat/GLAS, ICESat-2, LVIS, MEaSUREs, MODIS, SMAP, SnowEx, SSM/I-SSMIS and VIIRS.

IceBridge Narrow Swath ATM L1B Elevation and Return Strength, Version 2 (ILNSA1B)
Data set:
ILNSA1B
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This is the most recent version of these data.
Version Summary
Version 2 data are in HDF5 format beginning with the 2013 Arctic campaign.

Version 1 data are in Qfit binary format for 2012 and earlier campaigns.

  • Beginning with the 2013 Greenland campaign, the data file format is HDF5.

  • Qfit data files for all previous campaigns are to be replaced with HDF5 files.

  • The data set title (longname) changes from "IceBridge Narrow Swath ATM L1B Qfit Elevation and Return Strength" to "IceBridge Narrow Swath ATM L1B Elevation and Return Strength".

Overview

This data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired using the NASA Airborne Topographic Mapper (ATM) narrow-swath instrumentation. The data were collected as part of Operation IceBridge funded aircraft survey campaigns.
Data Contributor(s):
  • Michael
    Studinger
Parameter(s):
SEA ICE ELEVATION
Platform(s):
C-130, DC-8, G-V, HU-25C, P-3B
Sensor(s):
ATM
Data Format(s):
HDF5
Temporal Coverage:
20 March 2013 to 20 November 2019
Temporal Resolution:
Varies
Spatial Resolution:
2 m
2 m
Spatial Coverage:
N:
-53
S:
-90
E:
180
W:
-180
N:
90
S:
60
E:
180
W:
-180

Data Access & Tools

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Help Articles

How To

Many NSIDC DAAC data sets can be accessed using the NSIDC DAAC's Data Access Tool. This tool provides the ability to search and filter data with spatial and temporal constraints using a map-based interface.
To convert HDF5 files into binary format you will need to use the h5dump utility, which is part of the HDF5 distribution available from the HDF Group. How you install HDF5 depends on your operating system.
All data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system, using wget or curl. Basic command line instructions are provided in the article below.