GRIP AIRBORNE SECOND GENERATION PRECIPITATION RADAR (APR-2) V1

The GRIP Airborne Second Generation Precipitation Radar (APR-2) dataset was collected from the Second Generation Airborne Precipitation Radar (APR-2), which is a dual-frequency (13 GHz and 35 GHz), Doppler, dual-polarization radar system. It has a downward looking antenna that performs cross track scans. Additional features include: simultaneous dual-frequency, matched beam operation at 13.4 and 35.6 GHz (same as GPM Dual-Frequency Precipitation Radar), simultaneous measurement of both like- and cross-polarized signals at both frequencies, Doppler operation, and real-time pulse compression (calibrated reflectivity data can be produced for large areas in the field during flight, if necessary). The APR-2 flew on the NASA DC-8 for the Genesis and Rapid Intensification Processes (GRIP) experiment and collected data between Aug 17, 2010 - Sep 22, 2010 and are in HDF-4 format. The major goal was to better understand how tropical storms form and develop into major hurricanes. NASA used the DC-8 aircraft, the WB-57 aircraft and the Global Hawk Unmanned Airborne System (UAS), configured with a suite of in situ and remote sensing instruments that were used to observe and characterize the lifecycle of hurricanes.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 15, 2026, 05:45 (UTC)
Created April 1, 2025, 16:32 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/GRIP/APR2/DATA201
license https://www.usa.gov/government-works
modified 2026-09-07T22:16:04Z
programCode {026:000}
publisher NASA/MSFC/GHRC
resource-type Dataset
source_datajson_identifier true
source_hash 05b527c4c9e5facc104a7bc5d9b2d6c3535bc0cd0a50b3ee5915ff7461de0010
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -97.9192, "NorthBoundingCoordinate": 34.847, "EastBoundingCoordinate": -56.0457, "SouthBoundingCoordinate": 11.9008}]]
temporal 2010-08-17/2010-09-22
theme {"Earth Science"}