青藏高原东南缘横断山脉地区是南亚和东亚季风的交汇处，也是大气热源加热的敏感区。开展该地区地气相互作用对区域水热过程影响机制及其参数化研究，对于研究青藏高原大气水资源的关键过程问题有重大意义。本研究拟基于洱海湖面、丽江高山草甸及腾冲北海湿地三个地气交换通量观测站的连续观测资料，分析青藏高原东南缘横断山脉湿地、湖泊以及草甸下垫面地气相互作用的特征。结合卫星遥感资料，研究青藏高原东南缘横断山脉地气相互作用对区域能量和水分循环的影响及理论模型。研究中尺度模式中大气边界层参数化方案在青藏高原东南缘横断山脉的适用性, 改进中尺度模式在复杂山地下垫面大气边界层及水热过程的参数化方案。利用中尺度气象模式（WRF），耦合生态模式（如SiB3Crop），揭示青藏高原东南缘复杂山地的地气交换对区域尺度（10-30公里）的能量和水分循环影响的机制。

The Hengduan mountain situated in the southeast area of the Tibetan Plateau is in the conjunction area of the south Asia monsoon and southeast Asia monsoon, and it is also the heating sensitive area of the atmospheric heating source. It is of great importance for the understanding of the key processes of the atmospheric water resource in the Tibetan Plateau to investigate the effects and its parameterization schemes of the interaction between the land surface and the atmosphere on the water and energy exchange processes in this region. Based on the continuous eddy covariance measurements from the Erhai lake, Lijiang alpine grassland and Tengchong Beihai wetland land surface process observation sites, the characteristics of the interaction between the wetland/ lake/ grassland surfaces and the atmosphere will be analyzed. Combined with remote sensing datasets, the effect of the interaction between the land and the atmosphere on regional water and energy budgets and its theoretical model will be investigated in this region. The applicability of planetary boundary layer parameterizations schemes over this region in the mesoscale models will be validated. New parameterization schemes for the water and heat process in the planetary boundary layer over complex regions in mesoscale models will be developed. We try to find the mechanism of the effects of the exchange processes between the land surface and the atmosphere on energy and water cycles at regional scales (10-30 km) over complex terrain in the southeast part of the Tibetan Plateau.