On the Single-Doppler Measurements of Divergence in Clear Air

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  • 1 National Severe Storms Laboratory, Norman, OK 73069
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Abstract

The relationship between convective scales in the pre-storm environment and Doppler measurements of divergence is discussed with attention to problems inherent in radar measurements. A method is suggested to minimize the effects of beam smoothing and reflectivity weighting. A case study indicates the possibility of operational short-term forecasting of the onset time of precipitation from the radar measurements of divergence.

Abstract

The relationship between convective scales in the pre-storm environment and Doppler measurements of divergence is discussed with attention to problems inherent in radar measurements. A method is suggested to minimize the effects of beam smoothing and reflectivity weighting. A case study indicates the possibility of operational short-term forecasting of the onset time of precipitation from the radar measurements of divergence.

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