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陆面网格尺度变换时植被类型处理方法的探讨

张正秋 孙菽芬

张正秋, 孙菽芬. 陆面网格尺度变换时植被类型处理方法的探讨. 应用气象学报, 2008, 19(2): 129-136..
引用本文: 张正秋, 孙菽芬. 陆面网格尺度变换时植被类型处理方法的探讨. 应用气象学报, 2008, 19(2): 129-136.
Zhang Zhengqiu, Sun Shufen. Impacts from the processing of vegetation types within a model grid cell. J Appl Meteor Sci, 2008, 19(2): 129-136.
Citation: Zhang Zhengqiu, Sun Shufen. Impacts from the processing of vegetation types within a model grid cell. J Appl Meteor Sci, 2008, 19(2): 129-136.

陆面网格尺度变换时植被类型处理方法的探讨

资助项目: 

“十一五”国家科技支撑计划项目 2006BAC02B00

中国科学院重点项目 KZCX3-SW-229

国家自然科学基金项目 40575043

国家自然科学基金项目 40233034

Impacts from the Processing of Vegetation Types Within a Model Grid Cell

  • 摘要: 针对陆面模式与大气模式耦合, 对比分析了模式网格点上多种植被并存和单一植被两种情况下的计算结果, 同时给出了网格元上地表有效温度、地表有效感热和潜热通量等的计算方案。试验使用SSiB陆面模式并以HAPEX-MOBILHY资料作为气象强迫场。试验结果表明:如果将网格元上多种植被类型归类成同一种植被类型, 模式对有效地表温度、感热和潜热通量等的计算结果与考虑多种植被类型的结果有很大差异。根据实际情况, HAPEX-MOBILHY试验区40%为森林, 60%为混合农业区, 如果根据一般的植被类型归类法, 将该试验区全部看作草地, 其积分结果与将该试验区看作40%为落叶针叶林和60%为草地的积分结果也存在一定的差别; 虽然有些植被类型在网格元上所占的覆盖面积较小, 但它却对网格元上地表通量的计算有较大的贡献。该研究对今后陆面模式耦合工作有一定的指导意义。
  • 图  1  植被组合类型的地表有效温度积分结果 (T表示植被类型)

    (a) 类型组1, (b) 类型组2, (c) 类型组3, (d) 类型组4

    Fig. 1  Calculated effective temperatures at land surface for different grouped vegetation types (T denotes vegetation type)

    (a) Group 1, (b) Group 2, (c) Group 3, (d) Group 4

    图  2  图 1, 但为地表感热通量

    Fig. 2  Same as in Fig.1, but for land surface sensible heat flux

    图  3  图 1, 但为地表潜热通量

    Fig. 3  Same as in Fig.1, but for land surface latent heat flux

    图  4  组合类型的积分结果 (a) 地表感热通量, (b) 地表潜热通量

    Fig. 4  Calculated results for grouped vegetation types (a) sensible heat flux, (b) latent heat flux

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出版历程
  • 收稿日期:  2007-02-09
  • 修回日期:  2007-08-07
  • 刊出日期:  2008-04-30

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