GPM DPR Ka-band Received Power L1B 1.5 hours 5 km V07 (GPM_PRL1KA) at GES DISC

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 Older versions are no longer available and have been superseded by Version 07.

This product contains the calibrated received power from the Ka-band of the Dual-frequency Precipitation Radar (DPR) aboard the core satellite of the Global Precipitation Measurement (GPM) mission.

One of the reasons for adding the Ka-band frequency (35.5 GHz) channel to the DPR is to provide information on the drop-size distribution that can be obtained from non-Rayleigh scattering effects at the higher frequency. Another reason for the new Ka-band channel is to provide more accurate estimates of the phase-transition height in precipitating systems. This information is very important not only in increasing the accuracy of rain rate estimation by the DPR itself, but in improving rain estimation by passive microwave radiometers.

The Ka-band Radar has a more complex scanning geometry, defined by two modes: Matched (MS) and High-sensitivity (HS). In the first type of scan (MS), the Ka Radar beams are matched to the central 25 beams of the Ku Radar, providing a swath of 120 km (within the 245km swath of the Ku Radar). In the second type of scan (HS), the Ka is operated in the high-sensitivity mode to detect light rain and snow. In this case, its beams are interlaced within the matched scan pattern, resulting in 49 cross-track beams which, however, still cover the 120-km swath.

Data and Resources

Additional Info

Field Value
Maintainer ANDREY SAVTCHENKO
Last Updated March 31, 2025, 22:18 (UTC)
Created March 31, 2025, 22:18 (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_PRL1KA. GPM DPR Ka-band Received Power L1B 1.5 hours 5 km V07. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/GPM_PRL1KA_07.html. Digital Science Data.
creator GPM Science Team
data-presentation-form Digital Science Data
graphic-preview-description Land Ratio from GPM for 06/15/2016 (GPM_PRL1KA)
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/GPM_PRL1KA_05.png
harvest_object_id 3825b407-949b-49d7-89a7-675907d5bee0
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2179064667-GES_DISC
issued 2021-12-06
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C2179064667-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_PRL1KA
source_datajson_identifier true
source_hash 840be49b475789ae342106cc0107f43a6b9ceed6938c21922cc785b99f408831
source_schema_version 1.1
spatial -180.0 -70.0 180.0 70.0
temporal 2014-03-08T00:00:00Z/2023-03-01T00:00:00Z
theme {GPM,geospatial}