• On Wednesday, October 29 from 9:00 a.m. to 3:30 p.m. (US Mountain Time), this data set may not be available in the legacy data archive due to a planned system maintenance. Earthdata Cloud access will remain available for data sets that have migrated. Users of the SMAP near real-time products should use the NASA LANCE HTTPS File System for data access.

  • The NSIDC DAAC is retiring access to its legacy, on-premises data archive and transitioning to the NASA Earthdata Cloud as the primary data archive. View planned retirement dates here.

ATLAS/ICESat-2 L3A Along Track Inland Surface Water Data Quick Look, Version 6
Data set id:
ATL13QL
DOI: 10.5067/ATLAS/ATL13QL.006
There is a more recent version of these data.
Version Summary
Changes for Version 6 are as follows:

  • Modified the computations of the deconvolution of subsurface backscatter profile and deconvolution of surface water profile

  • Expanded iteration range of subsurface parameters within deconvolution scheme and added quality flags

  • Added surface quality flags

  • Defined end of partial short segments as the final signal photon

  • To avoid inadvertently capturing subsurface photons associated with bottom reflection and machine error, such photons are further screened and removed from processing using a mirroring approach applied to the water surface

  • Replaced “crossing-number” algorithm with “winding number” algorithm for better determination of ICESat-2 transects within the inland water mask shapes

In this section
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Overview

ATL13QL is the quick look version of ATL13. Once final ATL13 files are available the corresponding ATL13QL files will be removed. ATL13 contains along-track surface water products for inland water bodies. Inland water bodies include lakes, reservoirs, rivers, bays, estuaries and a 7 km near-shore buffer. Principal data products include the along-track water surface height and standard deviation, subsurface signal (532 nm) attenuation, significant wave height, wind speed, and coarse depth to bottom topography (where data permit).
Parameter(s):
Elevation
Platform(s):
ICESat-2
Sensor(s):
ATLAS
Data Format(s):
HDF5
Temporal Coverage:
  • 15 May 2023 to 17 June 2025
Temporal Resolution:
  • 91 day
Spatial Resolution:
  • Not Specified
Spatial Reference System(s):
  • WGS 84
    EPSG:4326
Spatial Coverage:
  • N:
    90
    S:
    -90
    E:
    180
    W:
    -180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

Data Access & Tools

This data set has been retired. There is a more recent version of these data.

Documentation

Help Articles

General Questions & FAQs

FAQs on ICESat-2 quick looks
Read this help article to learn about what ICESat-2 quick look data products are and how to find them.
Read More
When will the legacy, on-premises archive be retired?
The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is migrating its primary data access from its legacy, on-premises archive to the NASA Earthdata Cloud.
Read More

How to Articles

NASA Earthdata Cloud Data Access Guide
The NASA Earthdata Cloud is the NASA cloud-based archive of Earth observations. It is hosted by Amazon Web Services (AWS). Learn how to find and access NSIDC DAAC data directly in the cloud.
Read More