気候変動に伴う大気安定化と水蒸気浸潤がゲリラ豪雨の特性に及ぼす影響

Abstract

Under the climate change, it is important to clarify the future change in the nature of cumulonimbus cloud which leads to occur severe disasters such as flash flood. Theoretically, the capacity of the atmosphere to hold water and therefore rain intensity are governed by the Clausius-Clapeyron equation. However, in previous researches, observations and simulations show larger rate than its expectation. In this study, we figure out the future changes in rain intensity of cumulonimbus cloud using pseudo global warming experiments in order to analyze the mechanism of those changes from the view point of dynamic and thermodynamic. Finally we analyze the correspondence between rain intensity and atmospheric instability indices.