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宋耀明, 郭维栋, 张耀存, 陈永立. 陆面过程模式CoLM和NCAR_CLM3.0对中国典型森林生态系统陆气相互作用的模拟 I. 不同模式模拟结果的初步分析[J]. 气候与环境研究, 2009, 14(3): 229-242. DOI: 10.3878/j.issn.1006-9585.2009.03.01
引用本文: 宋耀明, 郭维栋, 张耀存, 陈永立. 陆面过程模式CoLM和NCAR_CLM3.0对中国典型森林生态系统陆气相互作用的模拟 I. 不同模式模拟结果的初步分析[J]. 气候与环境研究, 2009, 14(3): 229-242. DOI: 10.3878/j.issn.1006-9585.2009.03.01
Song Yaoming, Guo Weidong, Zhang Yaocun, Chen Yongli. Performances of CoLM and NCAR_CLM3.0 in Simulating Land-Atmosphere Interactions over Typical Forest Ecosystems in China Part I. Preliminary Analysis of the Simulations Based on Different Models[J]. Climatic and Environmental Research, 2009, 14(3): 229-242. DOI: 10.3878/j.issn.1006-9585.2009.03.01
Citation: Song Yaoming, Guo Weidong, Zhang Yaocun, Chen Yongli. Performances of CoLM and NCAR_CLM3.0 in Simulating Land-Atmosphere Interactions over Typical Forest Ecosystems in China Part I. Preliminary Analysis of the Simulations Based on Different Models[J]. Climatic and Environmental Research, 2009, 14(3): 229-242. DOI: 10.3878/j.issn.1006-9585.2009.03.01

陆面过程模式CoLM和NCAR_CLM3.0对中国典型森林生态系统陆气相互作用的模拟 I. 不同模式模拟结果的初步分析

Performances of CoLM and NCAR_CLM3.0 in Simulating Land-Atmosphere Interactions over Typical Forest Ecosystems in China Part I. Preliminary Analysis of the Simulations Based on Different Models

  • 摘要: CoLM(Common Land Model)和NCAR_CLM3.0(NCAR Community Land Model 3.0)是目前国际上广为应用的两个发展比较完善的陆面过程模式。本研究利用中国陆地生态系统通量观测研究网络(ChinaFLUX)在长白山温带混交林和千烟洲亚热带人工针叶林观测站点的长期连续强化观测资料,对这两个模式在上述地区的模拟性能进行了初步评估。同观测资料的对比表明,两个模式均能较好地模拟出观测站点地表能量和水分平衡的基本特征,其中,CoLM对潜热通量的模拟性能更好。以对潜热通量为期1年的日均值的模拟为例,CoLM和CLM3.0在长白山观测站模拟值和观测值时间序列的相关系数分别为0.80和0.65,在千烟洲站分别为0.69和0.64,均通过了0.01的信度检验;两个模式对全年平均的模拟与观测日平均值的比值在长白山分别为1.21和0.86,在千烟洲分别为0.83和0.60。研究结果表明,这两个陆面过程模式可以作为研究这两种典型森林生态系统陆气交换的基本工具。同时,对模式模拟性能差异的深入分析将有助于进一步改进陆面模式的参数化过程,为相关研究奠定更坚实的基础。

     

    Abstract: Common land model (CoLM) and NCAR Community Land Model 3.0 (NCAR_CLM3.0) are currently two sophisticated land surface models. For the purpose of validating these two models in studying land-atmosphere interaction over different underlying surfaces, two sets of simulations were conducted by using enhanced long term observations at the temperate mixed forest station of Changbai Mountain and the subtropical coniferous forest station of Qianyanzhou, which are the reference sites of Chinese Terrestrial Ecosystem Flux Observational Research Network (ChinaFLUX). Compared with the field observations, the two models can well reproduce the basic characteristics of surface energy and water budget, and CoLM can better simulate latent heat flux than CLM3.0. For CoLM and CLM3.0, correlation coefficients between the simulated and observed daily latent heat flux are 0.80 and 0.65, respectively, at Changbai Mountain station, and 0.69 and 0.64, respectively, at Qianyanzhou station, both above the 99% significance level. In addition, the rate between annual averaged observed and simulated latent heat flux are 1.21 and 0.86 at Changbai Mountain station, and 0.83 and 0.60 at Qianyanzhou station. The results show that the two models can be used as a basic tool of investigating land-atmosphere interactions at the two typical forest ecosystems. Moreover, the differences between the simulations have been analyzed, which would be helpful for improving the parameterization schemes in the land surface model and lays substantial foundation for the subsequent related researches.

     

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