NFLUENCE OF DIFFERENT TREATMENTS OF WATER VAPOR IN PSEUDO-WARMING EXPERIMENTS FOR A RAIN EVENT IN AUGUST, 2021

Abstract

 We investigated the influence of two different treatments of water vapor in pseudo-warming experiments for a heavy rain event in August, 2021; one keeps relative humidity in the present and calculating future humidity field by temperature increase; the other first calculates the difference of specific humidity between thre present and the future and reflects to the difference of relative humidity. Two different treatments yielded the very different precipitation pattern each other, and weakened the rainfall intencity compared with the present simulation even though equivalent potential temperature increased drastically in future simulations. Atmospheric stability became stable in future cases, which led to suppression of rain.