ドップラレーダと雨滴粒径分布測定装置を用いた降雨の観測(大気(2),一般講演)

概要

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We performed raindrop size distribution measurements from the ground to the altitude of about 5,000m using a lower atmospheric wind profiler (LAWP), a micro rain radar (MRR), and a microphonic raindrop-sizemeter (disdrometer) in Osaka Prefecture University. In order to improve accuracy of the measurement, we performed correction of atmospheric density as a function of the altitude, rain attenuation correction of MRR, and calibration of MRR and LAWP. We also introduced the algorithm to calculate raindrop size distribution from the received power. By combining the rain data of various observation instruments, it was possible to observe the entire rain structure from the ground to the melting layer. We derived the altitude variation of the mean raindrop size from the vertical profile of the raindrop size distribution.
2008-09-04