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Simulation of Land ETs of China with CoLM

机译：基于CoLM的中国陆地ET的模拟。

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摘要

It has become a great demand and a difficult task to study regional evapo-transpiration (ETs) in the field of geology and geography nowadays. As one of the most important contents in studying the interaction between land surface and atmosphere, the precise estimation of various land surface evapo-transpiration makes great sense to study the global climate change, as well as the reasonable utilization and distribution of water resources. Firstly, this paper analyzed several methods which are used to study ETs nowadays, especially the advantages and disadvantages of the prevailing method of RS for ETs, and proposed the new idea of combining the remote sensing method with the land-surface process model based on the previous work of Remote Sensing model for ETs. Then we drove CoLM (Common Land Model), which is the most advanced land surface process model in the world with GSWP-2 re-analyses meteorological data, and compared the ETs calculated by CoLM with the result calculated by a remote sensing model SEBS-China in 1991 of China. The result indicates that both models can simulate the monthly ETs however uncertainties exist in both of the models, which shows the significance and feasibility of the combination of two models in estimation of ETs. At last this paper analyzed the cause of the uncertainties of CoLM and prospected our future work, which is a preparation for the calibration to land surface model with RS model for ETs.
机译：如今，在地质和地理领域研究区域蒸发蒸腾（ETs）已经成为一个巨大的需求和一项艰巨的任务。作为研究地表与大气相互作用的最重要内容之一，准确估算各种地表蒸散量对研究全球气候变化以及合理利用和分配水资源具有重要意义。首先，本文分析了当今研究ET的几​​种方法，尤其是RS ET的现行方法的优缺点，提出了基于遥感的遥感方法与地表过程模型相结合的新思路。 ET的遥感模型的先前工作。然后，我们驾驶GSWP-2重新分析了气象数据，这是世界上最先进的地表过程模型CoLM（通用​​土地模型），并将CoLM计算的ET与遥感模型SEBS-中国1991年的中国。结果表明，两个模型都可以模拟月度ET，但是两个模型都存在不确定性，这说明了两个模型的组合在估计ET中的意义和可行性。最后，本文分析了CoLM不确定性的成因，并展望了我们未来的工作，这为用RS模型对ETs进行陆面模型校准提供了准备。

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