中文摘要：

现在的报导学习在东亚上从前面的季节在西藏的高原(TP ) 上调查了雪异例的坚持到在以前的雪盖子异例和夏天降水之间的夏天和关系。结果显示出那，相对另外的雪索引，例如观察的雪深度( SOSD )索引和雪水等价物( SWE )索引的车站，从 SWE 和相等区域的可伸缩的地球格子(容易格子)数据集的可见的雪的百分比计算的雪盖子区域比例( SCAP )索引在 interannual 异例有更高的坚持，特别地从5月到夏天。因此， 5 月 SCAP 索引是显著地与在 Meiyu-Baiu 区域上的夏天降水有关。 SCAP 索引的坚持能部分在除土壤潮湿 bridge.The 的贡献以外，在热带印度洋和 ENSO 的前面的 SST 异例能整个夏天坚持并且影响的 Meiyu-Baiu 区域上在夏天降雨上在 TP 上解释雪盖子的推迟季节的效果在 Meiyu-Baiu 上的夏天 降水区域。然而， 5 月 SCAP 索引主要独立于在热带印度洋和前面的 ENSO 的同时的 SST 并且可以在 SST 异例的效果的 Meiyu-Baiu 区域独立人士上影响夏天降水。因此，在 TP 上的 5 月 SCAP 能在在 Meiyu-Baiu 区域上预报夏天降水被认为是一个重要增补因素。

英文摘要：

The present reported study investigated the persistence of snow anomalies over the Tibetan Plateau（TP） from the preceding seasons to summer and the relationship between the previous snow cover anomaly and summer precipitation over East Asia. The results showed that, relative to other snow indices, such as the station observational snow depth（SOSD） index and the snow water equivalent（SWE） index, the snow cover area proportion（SCAP） index calculated from the SWE and the percentage of visible snow of the Equal-Area Scalable Earth Grids（EASE-grids） dataset has a higher persistence in interannual anomalies, particularly from May to summer. As such, the May SCAP index is significantly related to summer precipitation over the Meiyu-Baiu region. The persistence of the SCAP index can partly explain the season-delayed effect of snow cover over the TP on summer rainfall over the Meiyu-Baiu region besides the contribution of the soil moisture bridge. The preceding SST anomaly in the tropical Indian Ocean and ENSO can persist through the summer and affect the summer precipitation over the Meiyu-Baiu region. However, the May SCAP index is mostly independent of the simultaneous SSTs in the tropical Indian Ocean and the preceding ENSO and may affect the summer precipitation over the Meiyu-Baiu region independent of the effects of the SST anomalies. Therefore, the May SCAP over the TP could be regarded as an important supplementary factor in the forecasting of summer precipitation over the Meiyu-Baiu region.