Comparison of the compact Dopplar radar rain gauge and optical disdrometer
نویسندگان
چکیده
منابع مشابه
Improving Parameterization of Rain Microphysics with Disdrometer and Radar Observations
Disdrometer observations indicate that the raindrop size distribution (DSD) can be represented by a constrained-gamma (CG) distribution model. The model is used to retrieve DSDs from polarization radar measurements of reflectivity and differential reflectivity and to characterize rain microphysics and physical processes such as evaporation, accretion, and precipitation. The CG model parameteriz...
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Rain drop shapes play an important role in algorithm development for determining rainfall rates from polarimetric radar measurements [1]. It has been shown previously that the 2D video disdrometer (2DVD) [2] is capable of providing accurate information on drop shapes. An artificial rain experiment conducted under calm wind conditions [3, 4] yielded the mean drop shapes and the shape variations ...
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Measurements using the 2-D video disdrometer (2DVD) taken during a heavy rainfall event in Huntsville, Alabama, are analysed. The 2DVD images were processed to derive the rain microstructure parameters for each individual drop, which in turn were used as input to the T-matrix method to compute the forward and back scatter amplitudes of each drop at C-band. The polarimetric radar variables were ...
متن کاملError in the Sampling Area of an Optical Disdrometer: Consequences in Computing Rain Variables
The aim of this study is to improve the estimation of the characteristic uncertainties of optic disdrometers in an attempt to calculate the efficient sampling area according to the size of the drop and to study how this influences the computation of other parameters, taking into account that the real sampling area is always smaller than the nominal area. For large raindrops (a little over 6 mm)...
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ژورنال
عنوان ژورنال: Journal of Agricultural Meteorology
سال: 2011
ISSN: 0021-8588,1881-0136
DOI: 10.2480/agrmet.67.3.12