基于Noah-LSM模式和CoLM模式的青藏高原中部陆面过程模拟

利用中国科学院那曲高寒气候环境观测研究站Amdo站2012年10月1日-2013年10月1日的气象和土壤资料，通过Noah-LSM模式和CoLM模式对青藏高原中部陆面过程进行模拟研究。模拟结果表明：两个模式对辐射通量的模拟均与观测值较吻合，地表长波辐射的模拟效果最好，净辐射次之，地表反射辐射最差；两个模式模拟的土壤温度与观测值很接近，均是表层的模拟效果好于深层，夏季的模拟效果好于冬季；土壤的冻结和融化过程都是由表层开始向下延伸的，CoLM模式模拟的冻融起止时间与观测值更为接近；两个模式对土壤湿度的变化趋势模拟较好，但存在较大偏差。

Simulation of the land surface processes over the central Tibetan Plateau based on Noah-LSM and CoLM

The land surface processes over the central Tibetan Plateau were simulated by the Common Land Model and the Noah Land Surface Model,based on the observed meteorological data at Nagqu Station of Plateau Climate and Environment in the Tibetan Plateau of CAS from October 1,2012 to October 1,2013.The results showed that both models can capture the characteristics of radiation flux.Simulation of upward long-wave radiation is most successful,followed by that of net radiation,and the worst one is that of upward shortwave radiation.Both models performed well on soil temperature,especially on the temperature of shallow soil and in summer.Soil freezing and melting all start from the surface and spread downwards.Temporally,the simulated freeze-thaw process by the CoLM Model is closer to the observed one.For simulating the soil moisture,both models are able to predict the changing tendency with a relatively large bias.