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GPM DPR L2A Environment 1.5 hours 5 km V07 (GPM_2ADPRENV) at GES DISC

Metadata Updated: December 6, 2023

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 Older versions will no longer be available and have been superseded by Version 07.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.

This GPM data type provides single- and dual-frequency-derived precipitation estimates from the Ku and Ka radars of the Dual-Frequency Precipitation Radar (DPR) on the core GPM spacecraft. The output consists of three main classes of precipitation products derived from the: + the Ku-band frequency over a wide swath (245 km); + the Ka-band frequency over a narrow swath (125 km), and + the dual-frequency data over the narrow swath.

The Ka-band results are further divided into the standard and high-sensitivity estimates. In the standard sensitivity mode, the fields of view within the inner swath are matched to those of the Ku-band. Data from these matched-beam Ku- and Ka-band fields of view are used to derive the dual-frequency precipitation products. The retrievals are performed at each radar range bin along the slant path of the radar instrument field of view (IFOV).

The dual-frequency retrieval benefits from having co-aligned measurements at Ku- and Ka-bands. Data from these measurements are used to infer properties of the particle size distribution, which are expected to lead to improved estimates of rainfall rate and equivalent liquid water content. Dual-frequency data are expected to improve the capability to discriminate among water, ice, and mixed-phase hydrometeors as a function of height. This capability is particularly important in convective storms where a bright-band signature, associated with mixed-phase hydrometeors, is usually not detectable. In addition, the different attenuation rates of the Ku- and Ka-bands allow differential attenuation techniques to be used to estimate the path integrated attenuation. The high-sensitivity Ka-band channel is expected to have 6 dB greater sensitivity than the Ku- and standard Ka-band channels and to provide enhanced detection capabilities at the light rainfall rates.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date December 1, 2022
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

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Additional Metadata

Resource Type Dataset
Metadata Created Date December 1, 2022
Metadata Updated Date December 6, 2023
Identifier C2179081510-GES_DISC
Data First Published 2021-12-06
Language en-US
Data Last Modified 2021-12-06
Category GPM, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation GPM Science Team. 2021-12-10. GPM_2ADPRENV. Version 07. GPM DPR L2A Environment 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). Digital Science Data.
Creator GPM Science Team
Data Presentation Form Digital Science Data
Graphic Preview File
Harvest Object Id 95cfd355-3b2a-48dd-aad5-4c94e50512fa
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -180.0 -70.0 180.0 70.0
Program Code 026:001
Release Place Greenbelt, MD, USA
Series Name GPM_2ADPRENV
Source Datajson Identifier True
Source Hash 9fee425936f3db5bd2e9df2c21255307115cf598a9722d01da9a9c24a7a4637c
Source Schema Version 1.1
Temporal 2014-03-08T00:00:00Z/2023-02-28T00:00:00Z

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