Scientists from Tokyo Metropolitan University and other institutes have studied new satellite data showing the diameter of rain droplets and the distribution of heavy ice in the atmosphere worldwide. They focused on the Asian monsoon region, finding larger droplets and more heavy ice precipitation on land before the actual monsoon season. Their findings shed new light on the features of the pre-monsoon season, such as more intense precipitation and lightning, potentially informing better weather prediction.
precipitation
based on finer details than simply"how much" it rained. Recently, information has become available through the Global Precipitation Measurement Mission Core Observatory, a satellite which houses, among other things, a Dual-Frequency Precipitation Radar , a radar platform that yields information on the"microphysical" properties of rain around the world.
Amazingly, this includes the mean size of rain droplets and whether it is hail or graupel , both on land and out at sea. In a research scene dominated by a focus on rain volumes, it remains to be seen what such properties can tell us about precipitation around the world. A team including Drs. Moeka Yamaji and Hiroshi Takahashi has been studying the Asian monsoon season using newly available data from the DPR. In previous work, they found that the pre-monsoon season on land in Asia actually saw significantly heavier rainfall than the monsoon region, i.e., there was less rainfall in total, but the rain that did fall fell in stronger outbursts.droplets over land during the pre-monsoon season were larger, and there was an elevated amount of heavy ice precipitation.
Importantly, their analysis revealed that the correlation between the amount of rainfall and the size of
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