Monitoring Rain Rate with Data from Networks of Microwave Transmission Links

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 4Sprache: EnglischTyp: PDF

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Mätzler, Christian; Koffi, Ernest (Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland)
Berne, Alexis (Environmental Remote Sensing Laboratory, EPFL, 1015 Lausanne, Switzerland)

Monitoring microwave attenuation (20 to 45 GHz) of directional transmission links is a method to derive rain rate at high time resolution and in near-real time. Raindrops falling through a propagation path of a microwave link attenuate the transmitted signal quasi linearly with rain rate, allowing the estimation of path-averaged rain intensity. These data are valuable for meteorology, hydrology, agriculture, flood control, and others. The application to entire networks of commercial links would be a cost-effective method to fill data gaps where precipitation-radar data are either distorted or missing, such as large cities, valleys in mountain areas and developing countries. We will review the feasibility of the method and report on activities for setting up a project in Switzerland.