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杨传国 中国科学院大气物理研究所 ICCES 河海大学水文水资源与水利工程科学国家重点实验室 2006-08

2006 ECCE Summer School. Application of a coupled land surface model and hydrologic model for large scale basins. 杨传国 中国科学院大气物理研究所 ICCES 河海大学水文水资源与水利工程科学国家重点实验室 2006-08. Contents. Models and methods Application Summary. Land Surface Model

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杨传国 中国科学院大气物理研究所 ICCES 河海大学水文水资源与水利工程科学国家重点实验室 2006-08

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  1. 2006 ECCE Summer School Application of a coupled land surface model and hydrologic model for large scale basins 杨传国 中国科学院大气物理研究所ICCES 河海大学水文水资源与水利工程科学国家重点实验室 2006-08

  2. Contents • Models and methods • Application • Summary

  3. Land Surface Model • LSX ( Land Surface Transfer Model, Pollard and Thompson, 1995 ) ， 是全球环流模式GENESIS (Global ENvironmental and Ecological Simulation of Interactive Systems, Bonan et.al, 1992; Pollard and Thompson, 1994 ) 中的陆面模块。 • LSX借鉴了早期的BATS (Dickinson et.al., 1986) 和SiB (Sellers et.al., 1986) 模式，在复杂程度上介于二者之间。每个网格点的植被分作林木层和草丛层两层，土壤从地表到4.25m深不等距地分为六层。 Models & methods

  4. Hydrologic Model • HMS (Hydrologic Model System, Zhongbo Yu et al., 1999) • grid-based, physically based • especially designed for linked meteorological and climatic simulation with MM5. • 目前，HMS已应用于与MM5连接耦合（小尺度），并通过陆面模式（如LSX）和GCM耦合（大尺度）。已成功应用于北美地区不同流域的水文、气候等方面的模拟应用中。( Z. Yu et al.,1998, 1999, 2002, 2003, Journal of Hydrology, Journal of Global and Planetary Change, Water Resources Research, et al.) • North America -> Asia/China Models & methods

  5. HMS 包括四个子模块： • 土 壤 水 模 块 ( Soil Hydrologic Model, SHM ) • 地 表 水 模 块 ( Terrestrial Hydrologic Model, THM ) • 地 下 水 模 块 ( Groundwater Hydrologic Model, GHM ) • 河湖－地下水模块 ( Channel Groundwater Interaction Model, CGI ) Models & methods

  6. Structure of Coupled Model (Z. Yu et al.) Models & methods

  7. Application • 黄河流域 • NCEP/NCAR reanalyzed meteorologic data • 检验目前再分析气候数据库的精度； • 验证大尺度模型耦合的可行性。 • 1980-1993 兰州 Application

  8. Results show that streamflow simulated is in consistence with the observed in dry seasons, while a higher hydrograph exits in wet seasons, because of NCEP/NCAR precipitation data in the basin besides uncertainty of model structure and parameters. Application

  9. ~％ 研究区内NCEP/NCAR降水数据偏差（1980年） 黄土高原多年平均降水量478mm。 Application

  10. Water level decreased from 0.2m to 10m in the experiment period at most Loess Plateau areas, and no obvious fluctuation happens at the other areas. 黄河流域90年代初与80年代初相比的地下水位变化 黄土高原地下水埋深多在40~100m。 Application

  11. Summary • 耦合系统适用于中国大尺度流域； • NCEP再分析降水数据具有一定的水文模拟适用性。

  12. Thanks！ 感谢 林朝晖、余钟波、郝振纯 教授/研究员！ ychg@mail,iap.ac.cn

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