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冰川冻土 ›› 2013, Vol. 35 ›› Issue (2): 291-300.doi: 10.7522/j.issn.1000-0240.2013.0035

• 冰冻圈与全球变化 • 上一篇    下一篇

CLM3和SHAW模式在青藏高原中部NMQ站的模拟研究

陈晓磊1,2, 杨梅学1, 万国宁1, 王学佳1,2, 罗小青1,2, 梁小文1,2   

  1. 1. 中国科学院 寒区旱区环境与工程研究所 冰冻圈科学国家重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2012-09-10 修回日期:2013-01-28 出版日期:2013-04-25 发布日期:2013-05-14
  • 通讯作者: 杨梅学,E-mail:mxyang@lzb.ac.cn E-mail:mxyang@lzb.ac.cn
  • 作者简介:陈晓磊(1987-), 男, 陕西富平人, 2010年毕业于西北大学, 现为中国科学院寒区旱区环境与工程研究所在读硕士研究生, 主要从事冰冻圈与气候环境变化研究. E-mail: shibingxiaolei@126.com
  • 基金资助:

    国家自然科学基金项目(41075007); 中国科学院"百人计划"项目(29O827B11); 国家重点基础研究发展规划(973)项目(SQ2010CB951404); 中国科学院战略性先导科技专项(B类)(XDB03030204)资助

Simulation Studies of CLM3 and SHAW at NMQ Stationon the Central Tibetan Plateau

CHEN Xiao-lei1,2, YANG Mei-xue1, WAN Guo-ning1, WANG Xue-jia1,2, LUO Xiao-qing1,2, LIANG Xiao-wen1,2   

  1. 1. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-09-10 Revised:2013-01-28 Online:2013-04-25 Published:2013-05-14

摘要:

利用那曲地区NMQ站2010年11月1日至2011年7月26日的观测资料作为通用陆面过程模式CLM3.0和水热耦合模式SHAW的大气强迫, 在青藏高原中部季节冻土区进行了单点模拟研究.在参照观测资料的基础上, 对两个陆面模式的模拟结果对比发现: SHAW模式和CLM3.0模式模拟的向上短波辐射和向下长波辐射值基本相近或重合, 但两个模式均未考虑新雪存在对向上短波辐射的影响, 以及青藏高原日冻融循环过程中潜热释放对向上长波辐射的影响.此外, SHAW模式和CLM3.0模式均能模拟各层土壤温度的逐日变化, 均是上层土壤的模拟效果较下层好; 相比SHAW模式, CLM3.0各层土壤温度的模拟值更接近于实测值.对土壤含水量的模拟而言, 60 cm以上(包括60 cm)SHAW模式和CLM3.0模式各有其优缺点, 60 cm以下SHAW模式的模拟结果要好于CLM3.0, 尤其是土壤冻结和消融时段的模拟结果.

关键词: CLM3.0, SHAW, 土壤, 温度, 含水量, 模拟

Abstract:

Observation data at NMQ Station was used as the atmospheric forcing data of the general land surface processes model (Community Land Model, CLM3.0) and Simultaneous Heat and Water (SHAW). Single point simulation studies were carried out for the seasonal frozen soil regions of the central Tibetan Plateau. Comparing the observed and simulated values from the two land surface processes models, it is found that simulation values of upward shortwave and upward long wave radiations from SHAW model are similar to those from CLM3.0. However, both models have not considered the effects of upward shortwave radiation from new snow and of upward long wave radiation due to latent heat release in daily freeze-thaw cycle. In addition, the daily variation of ground temperature has been well simulated by the SHAW model and CLM3.0 mode, but for the upper layers is better than for the lower layers. As compared with SHAW mode, the simulation value from CLM3.0 is closer to the measured value. For simulating soil water content, as the depth lees than 60 cm (including 60 cm), SHAW model and CLM3.0 mode all have their advantages and disadvantages, but as the depth more than 60 cm, the SHAW model is better than CLM3.0, especially for the process of soil freeze-thaw.

Key words: CLM3.0, SHAW, soils, temperature, water content, simulation

中图分类号: 

  • P435