GPM DPR Ka Environment L2A 1.5 hours 5 km V07 (GPM_2AKaENV) at GES DISC

Version 07 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 07. .

This is environmental data that includes the profiles of atmospheric parameters assumed in the L2 retrieval algorithm.

The 2AKa algorithm provides precipitation estimates from the Ka radar of the Dual-Frequency Precipitation Radar on the core GPM spacecraft. The product contains two swaths of data corresponding to the scans of the Ka radar.

The first swath contains matched scans (MS), which are intended to be co-aligned with the Ku-band instantaneous fields of view (IFOV). The second swath contains the high-sensitivity scans (HS), which are interleaved between the Ku/Ka-MS swaths. Both swaths are narrow and centered within the interior of the Ku swath.

This is a single-frequency retrieval of precipitation; no information from the Ku radar is used. The retrievals are performed at each radar range bin along the slant path of the radar IFOV for each swath. This is a single-frequency retrieval that relies on Ka-band data only. While the 2ADPR dual-frequency retrieval should give better overall estimates, that algorithm requires co-aligned Ku-band data. This 2AKa product will be produced independently and would not be impacted by any operational issues with the Ku-band radar. The high sensitivity to smaller hydrometeors should result in precipitation estimates in lighter precipitation than the Ku-only data.

Data and Resources

Additional Info

Field Value
Maintainer GEORGE HUFFMAN
Last Updated March 31, 2025, 16:35 (UTC)
Created March 31, 2025, 16:35 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation GPM Science Team. 2021-12-10. GPM_2AKaENV. Version 07. GPM DPR Ka Environment L2A 1.5 hours 5 km V07. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, NASA Goddard Earth Science Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/GPM_2AKaENV_07.html.
creator GPM Science Team
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/GPM/browse/GPM_2AKaENV.png
harvest_object_id da0f3766-41b9-45b7-b36f-a307c07ac448
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2179301732-GES_DISC
issued 2021-12-06
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C2179301732-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2021-12-06
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name GPM_2AKaENV
source_datajson_identifier true
source_hash 6d39a0abe3d1e2032fd20efd67a489e81a899c6f67e80eb78559d1b9290d2c8d
source_schema_version 1.1
spatial -180.0 -70.0 180.0 70.0
temporal 2014-03-08T00:00:00Z/2023-02-28T00:00:00Z
theme {GPM,geospatial}