Abstract:Considering the existing global model Tm can not obtain the global regional real-time high-precision Tm, we use the ERA5 reanalysis data provided by ECMWF from 2014 to 2017 to analyze the temporal-spatial variation characteristics of Tm lapse rate on a global scale. The results show that Tm lapse rate has obvious annual cycle and semiannual cycle variation, but its daily variation is slight and has obvious differences on land, sea and different terrains. The Tm lapse rate obviously varies by area and has no significant correlation with longitude, while it has a strong correlation with latitude. Its absolute values decrease from the equator to the poles gradually.
XIE Shaofeng,ZHANG Jihong,WANG Yijie et al. Temporal-Spatial Characteristics Analysis of the Lapse Rate for Atmospheric Weighted Mean Temperature[J]. jgg, 2023, 43(6): 593-599.