围绕青藏高原大型湖泊气候效应及其作用机理问题,以纳木错湖为切入点，基于实际情况校正3维湖泊模型中影响湖-气通量交换和湖泊热力状况模拟的关键参数并改进关键物理过程参数化方案，提高3维湖泊模型对高原大型湖泊热力特征模拟的适用性，进而建立适合高原大型湖泊-大气相互作用及其气候效应研究的高分辨率3维湖-气耦合区域气候模式。在此基础上，利用建立的3维湖-气耦合气候模式通过数值模拟试验揭示纳木错湖泊内部动力、热力状况的三维精细化结构和演变规律及其对湖-气界面水分和能量交换影响的时空分布特征，弄清纳木错湖泊气候效应的影响范围、强度及其季节性差异产生的物理机制，加深对高原大型湖泊在地-气通量交换、区域水分和能量循环及气候形成和变化中作用的认识和理解，为进一步提高青藏高原大型湖泊区天气、气候以及湖泊水环境预测的精细化水平提供科技支撑, 同时为拓展数值模式在促进多学科交叉研究中的应用前景方面打下坚实的基础。

Focusing on the climatic effect of large lakes over Tibetan Plateau and the underlying working mechanisms, the 3D lake model will be firstly improved by adjusting some key model parameters and parameterizations of key physical processes related to the air-lake flux exchange and lake thermal regime based on the reality over Lake Nam Co to increase the 3D lake model's suitability over Tibetan Plateau. And then a 3D air-lake fully coupled regional climate model with high horizontal resolution will be established to reasonably simulate the air-lake interaction and climatic effect of large lakes over Tibetan Plateau by coupling the improved 3D lake model within WRF climate model. Based on the simulations of the 3D air-lake coupled climate model, we will deeply reveal the detailed evolution features of the 3D dynamic and thermal regime in Lake Nam Co and their impacts on the spatial-temporal distribution of water and energy exchanges at the air-lake interface. The seasonal differences in the intensity and scope of climatic effect of Lake Nam Co and the underlying physical mechanisms will be also deeply analyzed. Study of this project can deepen our understanding of the impacts of large lakes over Tibetan Plateau on the lake-air flux exchange, regional water and energy cycle and climate formation and change. Meanwhile, this study can provide the scientific support for further improving the elaboration level of weather, climate and lake water environment predictions over the areas in Tibetan Plateau with large lakes. In addition, this study can also lay a solid foundation for expanding the application prospects of numerical models in promoting interdisciplinary research.