Frozen Soil Advances the Effect of Spring Snow Cover Anomalies on Subsequent Precipitation over the Tibetan Plateau

Abstract Frozen soil distributed over alpine cold regions causes obvious changes in the hydrothermal regime and influences water–heat exchanges between land atmosphere. In this study, by comparing effects of snow cover anomalies frozen thawing on regime, impact spring precipitation early summer Tibetan Plateau (TP) was investigated via diagnostic analysis model simulations. The results show that a delay (advance) can induce distinct (warm) temperature eastern TP. These further weaken (enhance) surface diabatic heating mideastern TP; meanwhile, western TP are inconspicuous. Compared to albedo effect anomalies, impacts persist longer from April June. Corresponding anomalous thawing, monsoon cell is weakened (enhanced) southern northern TP, resulting less (more) water vapor advection more (less) southwestern This difference induces west–east reversed pattern June have potential for improving our understanding interactions cryosphere climate regions. Significance Statement widely high-latitude regions, their feedbacks attracted much attention. purpose study investigate role its feedback subsequent Plateau. highlight modulates interseasonal variations anomaly zones result thermal contrast Plateau, which lead findings emphasize land–atmosphere interactions.