Array · collection · 2026
ATLAS/ICESat-2 L3B Gridded Sea Ice Freeboard Quick Look V005
Listed in NASA Earthdata CMR
ATL20QL is the Quick Look (QL) version of ATL20 with an expedited latency of 3‒5 days.
Description
QL data are based on the same algorithms that generate the standard products but do not undergo the same rigorous quality checks; thus, they should be used with caution. Once final files are available, the corresponding QL files are removed.
ATL20QL contains rolling 30-day gridded estimates of sea ice freeboard, derived from ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look (ATL10QL) along-track freeboard estimates.
Links
Get the data
- nsidc.org /data/data-access-tool/ATL20QL/versions/5 ↗
Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script.
download · from NASA CMR
- cmr.earthdata.nasa.gov /virtual-directory/collections/C4139644977-NSIDC_CPRD ↗
Quickly download a few files using a web browser, or access data through a command-line utility such as WGET.
download · from NASA CMR
- earthaccess.readthedocs.io /en/stable ↗
A Python library to search and access NASA Earth science data with just a few lines of code
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C4139644977-NSIDC_CPRD ↗
Search and order NASA Earth Science data using spatial and temporal filters. Reformatting, reprojecting, and subsetting options are available for some data sets.
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/atlas/atl20ql.005 ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · DOI / persistent id · from NASA CMR
Documentation and papers
- ATL20/21 Known Issues (V5/V4) nsidc.org/sites/default/files/documents/technical-reference/icesat2_atl2… ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/documents/user-guide/atl20ql-v005-userguid… ↗
ATLAS/ICESat-2 L3B Gridded Sea Ice Freeboard Quick Look, Version 5 User Guide
documentation · from NASA CMR
- ATL20 Data Dictionary (V5) nsidc.org/sites/default/files/documents/technical-reference/icesat2_atl2… ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/documents/technical-reference/icesat2_atl0… ↗
Algorithm Theoretical Basis Document (ATBD for ATL07/ATL10/ATL20/ATL21 | V7)
documentation · from NASA CMR
- ICESat-2 Major Activities (includes yaw flips) nsidc.org/sites/default/files/documents/technical-reference/icesat-2-maj… ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/documents/technical-reference/icesat-2_dat… ↗
ATL03/ICESat-2 Data Gaps (applies to all ICESat-2 products)
documentation · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C4139644977-NSIDC_CPRD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C4139644977-NSIDC_CPRD.html ↗
catalogue entry · from NASA CMR
Topics
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C4139644977-NSIDC_CPRD | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:atlas | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice/freeboard | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:icesat-2 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |