Observations and Analysis in Global Distribution of Clouds using the High SENSITIVITY Cloud Profiling Radar on Borad a Research Vessel

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Observations and analysis of clouds have been done with the high sensitivity cloud profiling radar FALCON-I, Chiba University, to investigate global distribution of clouds. Cloud height distributions in southwest region of the Pacific Ocean and in the Arctic Ocean are 0-11 km and 0-7 km, fraction rates of clouds/rain are 10% and 50%, and kinds of clouds are 95% cumuli and 90% strati, respectively. Doppler observations of a cumulonimbus revealed that rain droplets up to 1 mm in diameter are promptly generated after passing through the melting layer as narrow as ～100m.