The effect of nonuniform beam filling on the quality of radar polarimetric data
نویسنده
چکیده
Nonuniform beam filling may also cause significant perturbations of the radial profile of differential phase ΦDP (Ryzhkov and Zrnic 1998; Gosset 2004). Such perturbations of ΦDP result in spurious values of its radial derivative, specific differential phase KDP, and strong biases in the KDP-based estimates of rain rate. These adverse effects are commonly manifested as the appearance of negative KDP in the regions of strongly nonuniform precipitation and become more pronounced as the physical size of the radar resolution volume increases at longer distances.
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