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Instrument

APR-2
Airborne Second Generation Precipitation Radar

The Airborne Second Generation Precipitation Radar (APR-2) is a dual-frequency, cross-track scanning radar that measures precipitation from aircraft. It detects radar backscatter from rain to determine reflectivity, Doppler velocity, and linear depolarization ratio (LDR). APR-2 operates at 13.4 GHz and 35.6 GHz with a pulse repetition frequency (PRF) of 5000 Hz. At an altitude of 11,000 feet, it provides horizontal resolutions of 730 meters at 13.4 GHz and 920 meters at 35.6 GHz. The radar has a vertical resolution of 60 meters and a ground swath width of 10 km.

Image of the APR-2 during the CPEX campaign
NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Radar
Earth Science > Spectral/engineering > Radar > Doppler Velocity
Earth Science > Spectral/engineering > Radar > Radar Reflectivity
Earth Science > Atmosphere > Precipitation > Precipitation Rate
Earth Science > Spectral/engineering > Radar > Radar Backscatter
Full Column Profile
Variable
730 m, 920 m, 60 m (vertical)
13.4 GHz, 35.6 GHz
https://doi.org/10.1117/12.579015External Link
Wakasa Bay Experiment

Wakasa Bay Experiment

2003
Wakasa Bay, Japan, Sea of Japan, Western Pacific Ocean
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1 Deployment
· 0 Data Products

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http://dx.doi.org/10.5067/GRIP/APR2/DATA201External Link
http://dx.doi.org/10.5067/NAMMA/APR2/DATA201External Link
10.5067/GPMGV/GCPEX/APR2/DATA101External Link
10.5067/CAMEX-4/PR2/DATA003External Link