We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Detection of Intense Ice Precipitation with GPM/DPR.
- Authors
Iguchi, Toshio; Kawamoto, Nozomi; Oki, Riko
- Abstract
Detection of ice precipitation is one of the objectives in the Global Precipitation Measurement (GPM) mission. The dual-frequency precipitation radar (DPR) can provide precipitation echoes at two different frequencies, which may enable differentiating solid precipitation echoes from liquid precipitation echoes. A simple algorithm that flags the pixels that contain intense ice precipitation above the height of 2108C is implemented in version 5 of the DPR products. In the inner swath of DPR measurements in which both Kuand Ka-band radar echoes are available, the measured dual-frequency ratio (DFRm) together with the measured radar reflectivity factor is used to judge the existence of intense ice precipitation. Comparisons of the flagged pixels with surface measurements show that the algorithm correctly identifies relatively intense ice precipitation regions. The global distribution of the flagged pixels indicates an interesting difference between land and ocean, in particular in the distribution of ice precipitation that reaches the surface. The flag is also expected to be useful for improving precipitation retrieval algorithms by microwave radiometers.
- Subjects
FREEZING precipitation; METEOROLOGICAL precipitation measurement; ICING (Meteorology); RADAR meteorology; ALGORITHMS
- Publication
Journal of Atmospheric & Oceanic Technology, 2018, Vol 35, Issue 3, p491
- ISSN
0739-0572
- Publication type
Article
- DOI
10.1175/JTECH-D-17-0120.1