Structure of the Western Tibetan Vortex inconsistent with a thermally-direct circulation

Abstract The Western Tibetan Vortex (WTV) is a large-scale circulation pattern identified from year-to-year variability, which was used to understand the causal mechanisms for slowdown of glacier melting over western Plateau (TP). A recent argument has suggested WTV set wind field anomalies resulting variability in near-surface air temperatures TP (above 1500 m), which, turn, likely driven by surface net radiation. This study thereby evaluates above putative thermal-direct mechanism. By conducting numerical sensitivity experiments using global atmospheric model, SAMIL, we find WTV-like structure cannot be generated thermal forcing imposed on TP. thermally-direct or near heating expect cause upward motions and baroclinic it. In contrast, downward quasi-barotropic are observed vertical WTV. Besides, radiation (sum shortwave longwave radiation) can traced back based ERA5 data. anticyclonic (cyclonic) reduces (increases) cloudiness through anomalous (upward) motions, causes more (less) input radiations, warmer (cooler) temperature constructive encouraging examination radiative balance processes that complements previous studies.