ICESat/GLAS Data Subsetter

Subsetting Preferences

Please request small subsets only! If you have a large data request, please order the data from the Warehouse Inventory Search Tool (WIST) 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, 031 is Release-31). 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.