Array · collection · 2025
ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly V004
Listed in NASA Earthdata CMR
ATL21 contains daily and monthly gridded polar sea surface height anomalies, derived from ATLAS/ICESat-2 L3A Sea Ice Freeboard (ATL10) along-track freeboard estimates.
Links
Get the data
- 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
- cmr.earthdata.nasa.gov /virtual-directory/collections/C3826284331-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
- nsidc.org /data/data-access-tool/ATL21/versions/4 ↗
Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script.
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C3826284331-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/atl21.004 ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · DOI / persistent id · from NASA CMR
Documentation and papers
- ATL21 Data Dictionary (V4) nsidc.org/sites/default/files/documents/technical-reference/icesat2_atl2… ↗
documentation · from NASA CMR
- nsidc.org /sites/default/files/documents/user-guide/atl21-v004-userguide.… ↗
ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 4 User Guide
documentation · from NASA CMR
- 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/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/C3826284331-NSIDC_CPRD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3826284331-NSIDC_CPRD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Airborne Tunable Laser Absorption Spectrometer · Ice, Cloud, and land Elevation Satellite-2 · Sea Surface Height Anomaly _Ssha_
- Inferred from text
- Hydrology 69%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3826284331-NSIDC_CPRD | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3707 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (69%) |
| concepts[instrument].gcmd_instrument:atlas | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/sea-surface-topography/sea-surface-height/sea-surface-height-anomaly-ssha | 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 |