A land surface model incorporated with soil freeze/thaw and its application in GAME/Tibet
文献类型：期刊论文
| 作者 | Hu Heping; Ye Baisheng; Zhou Yuhua; Tian Fuqiang |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2006-12-01 |
| 卷号 | 49期号:12页码:1311-1322 |
| 关键词 | land surface model soil freeze/thaw GAME/Tribet simultaneous liquid vapor and heat transfer |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-006-2028-3 |
| 通讯作者 | Hu Heping(huhp@tsinghua.edu.cn) |
| 英文摘要 | Land surface process is of great importance in global climate change, moisture and heat exchange in the interface of the earth and atmosphere, human impacts on the environment and ecosystem, etc. Soil freeze/thaw plays an important role in cold land surface processes. In this work the diurnal freeze/thaw effects on energy partition in the context of GAME/Tibet are studied. A sophisticated land surface model is developed, the particular aspect of which is its physical consideration of soil freeze/thaw and vapor flux. The simultaneous water and heat transfer soil sub-model not only reflects the water flow from unfrozen zone to frozen fringe in freezing/thawing soil, but also demonstrates the change of moisture and temperature field induced by vapor flux from high temperature zone to low temperature zone, which makes the model applicable for various circumstances. The modified Picard numerical method is employed to help with the water balance and convergence of the numerical scheme. Finally, the model is applied to analyze the diurnal energy and water cycle characteristics over the Tibetan Plateau using the Game/Tibet datasets observed in May and July of 1998. Heat and energy transfer simulation shows that: (i) There exists a negative feedback mechanism between soil freeze/thaw and soil temperature/ground heat flux; (ii) during freezing period all three heat fluxes do not vary apparently, in spite of the fact that the negative soil temperature is higher than that not considering soil freeze; (iii) during thawing period, ground heat flux increases, and sensible heat flux decreases, but latent heat flux does not change much; and (iv) during freezing period, soil temperature decreases, though ground heat flux increases. |
| 收录类别 | SCI |
| WOS关键词 | METEOROLOGICAL MODELS ; PARAMETERIZATION ; CLIMATE ; SCHEME ; WATER ; CIRCULATION ; CONVECTION ; PLATEAU ; BASIN |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000242612200008 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555743 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Hu Heping |
| 作者单位 | 1.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.MIT, Dept Civil Engn, Cambridge, MA 02139 USA |
| 推荐引用方式 GB/T 7714 | Hu Heping,Ye Baisheng,Zhou Yuhua,et al. A land surface model incorporated with soil freeze/thaw and its application in GAME/Tibet[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(12):1311-1322. |
| APA | Hu Heping,Ye Baisheng,Zhou Yuhua,&Tian Fuqiang.(2006).A land surface model incorporated with soil freeze/thaw and its application in GAME/Tibet.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(12),1311-1322. |
| MLA | Hu Heping,et al."A land surface model incorporated with soil freeze/thaw and its application in GAME/Tibet".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.12(2006):1311-1322. |
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来源：寒区旱区环境与工程研究所
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