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ICESat/GLAS Data Subsetter

Subsetting Preferences

Please request small subsets only! If you have a large data request, please order the data from the EOS Data Gateway instead. Please note that NSIDC staff must review each order before subsetting data, which may result in a short delay in processing your order.

The following products are currently available for subsetting. The three-digit number following the period is the release number (for example, 018 is Release-18). See the Release Schedule for the temporal coverage of each release. You will not be able to choose a specific release; you will receive all publicly available data for your selected time period, which may include multiple releases and laser campaigns.

* Select one or more data set titles or IDs

Note: L1A, L1B, and L2 in the data set titles refer to data processing levels, not laser identifiers.

GLAS/ICESat L1A Global Altimetry Data (GLA01)
GLAS/ICESat L1B Global Waveform-based Range Corrections Data (GLA05)
GLAS/ICESat L1B Global Elevation Data (GLA06)
GLAS/ICESat L1B Global Backscatter Data (GLA07)
GLAS/ICESat L2 Global Planetary Boundary Layer and Elevated Aerosol Layer Heights (GLA08)
GLAS/ICESat L2 Global Cloud Heights for Multi-layer Clouds (GLA09)
GLAS/ICESat L2 Global Aerosol Vertical Structure Data (GLA10)
GLAS/ICESat L2 Global Thin Cloud/Aerosol Optical Depths Data (GLA11)
GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data (GLA12)
GLAS/ICESat L2 Sea Ice Altimetry Data (GLA13)
GLAS/ICEsat L2 Global Land Surface Altimetry Data (GLA14)
GLAS/ICESat L2 Ocean Altimetry Data (GLA15)

* Please complete one of the subsetting options below.

Option 1: Single subset

Enter your bounding coordinates in decimal degrees.
Valid latitude ranges are -90.0 to 90.0. Valid longitude ranges are -180.0 to 180.0.
Use a negative sign for Southern and Western Hemispheres.

OR

Option 2: Multiple subsets

IMPORTANT! Bounding coordinates must be entered below in the following manner, otherwise your order will fail.

• Sequence is southernmost latitude, westernmost longitude, northernmost latitude, and easternmost longitude.
• Enter one set of bounding coordinates per line.
• Enter values in decimal degree format.
• Use commas to separate the values.
• Use a negative sign for Southern and Western Hemispheres.

Example:

-90.0, 20.3, -80.0, 30.5
30.0, -45.0, 45.0, -30.0
65.0, 120.0, 89.0, 150.0

Bounding coordinates

Enter start and stop dates and times for your subset.