Application of radar profilers in multisensor hydrologic field campaigns

Christopher R. Williams; Kenneth S. Gage

doi:10.1117/12.578096

22 December 2004 Application of radar profilers in multisensor hydrologic field campaigns

Christopher R. Williams, Kenneth S. Gage

Proceedings Volume 5654, Microwave Remote Sensing of the Atmosphere and Environment IV; (2004) https://doi.org/10.1117/12.578096
Event: Fourth International Asia-Pacific Environmental Remote Sensing Symposium 2004: Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2004, Honolulu, Hawai'i, United States

Abstract

Precipitation profiling from vertically-looking ground-based radar profilers operating at frequencies of 915- and 2835-MHz have been demonstrated to be useful tools in several field campaigns during the past decade. When combined with a surface disdrometer and a nearby scanning radar, the calibrated profiling radar provides high resolution details of the precipitation vertical structure while the scanning radar provides the horizontal context of the precipitation relative to the profiler site. Profiling radars provide detailed information of reflectivities and drop-size distributions that are essential for quantitative precipitation estimation (QPE). One role that profiling radars have in QPE is monitoring the calibration of the scanning radar reflectivity used to map the precipitation over a large area. The concept of up-scaling uses a surface disdrometer to calibrate the profiling radar which is then used to calibrate the scanning radar. This method of up-scaling the reflectivities observed by the surface disdrometer to the scanning radar reflectivities eliminates some of the uncertainties of Z-R relationships inherent in surface rain gauge to scanning radar calibrating and monitoring techniques.

Citation Download Citation

Christopher R. Williams and Kenneth S. Gage "Application of radar profilers in multisensor hydrologic field campaigns", Proc. SPIE 5654, Microwave Remote Sensing of the Atmosphere and Environment IV, (22 December 2004); https://doi.org/10.1117/12.578096

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