As one of important large-scale systems in south Asia, the Indian summer monsoon (ISM) can affect the moisture budget and cloud processes over the Tibetan Plateau (TP). The influneces of ISM on cloud and precipitation of the Eastern TP (ETP) are discussed via a cloud-resolving model. The outbreak of ISM can activate the moisture transport between TP and the southern ocean in May, which reaches its annual most active period in July. The simulation results show that, compared to a normal ISM year, the moisture transport is intensified in pre-summer and is weakened in a strong ISM year, leading to more pre-summer deep clouds and rainfall. However, a weak ISM year exhibits weak pre-summer moisture transport and active summer moisture transport, resulting in few pre-summer deep clouds and rainfall. The summer moderate cloud cells are reduced in the strong ISM year while are promoted in the weak ISM year, taking responsibility for the summer precipitation variations. The ETP daily maximum precipitation appears at around 21:00 LST and increases after mid-April, reaches its maximum in summer. The model also suggests that the ETP warm season precipitation variation in the strong ISM year is closely related to deep convective cloud (DCC) properties (e.g. frequency and cloud water content). However, deep clouds (cloud depth > 4.0 km) rather than DCC contribute more to the precipitation diurnal variations during June and July in the weak ISM year.

作为南亚重要的大尺度系统之一，印度夏季风（ISM）可以影响青藏高原（TP）的水汽收支和云过程。通过云解析模型讨论了ISM对青藏高原东部云和降水的影响。 ISM的爆发可以激活5月份青藏高原与南大洋之间的水汽输送，7月份达到全年最活跃期。模拟结果表明，与正常ISM年相比，夏季前水汽输送增强，ISM强年水汽输送减弱，导致夏季前深云和降雨增多。然而，弱ISM年表现出夏季前水分输送较弱，夏季水分输送活跃，导致夏季前深层云和降雨很少。夏季中云单元在ISM强年减少，在ISM弱年增加，对夏季降水变化负有责任。 ETP日最大降水量出现在LST 21:00左右，4月中旬以后增加，夏季达到最大。模型还表明强ISM年ETP暖季降水变化与深对流云（DCC）特性（如频率和云水含量）密切相关。然而，在 ISM 弱年，深层云（云深 > 4.0 km）而非 DCC 对 6 月和 7 月降水日变化的贡献更大。