Observed trends in surface freezing/thawing index over the period 1987-2005 in Mongolia
文献类型：期刊论文
| 作者 | Wu, Tonghua2; Wang, Qinxue1; Zhao, Lin2; Batkhishig, Ochirbat3; Watanabe, Masataka4 |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 69期号:1页码:105-111 |
| 关键词 | Surface freezing/thawing index Trend Permafrost Climatic warming |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2011.07.003 |
| 通讯作者 | Wang, Qinxue(wangqx@nies.go.jp) |
| 英文摘要 | The annual ground surface freezing and thawing indices can be useful to assess the temporal changes of ground thermal regime in permafrost and seasonally frozen ground regions. The previous analyses of in-situ observation results show that the annual freezing/thawing index could be reliably obtained from monthly observation data. We thus employ monthly ground surface temperature to calculate the annual surface freezing/thawing index in Mongolia. In this study we used Mann-Kendal test and Sen-slope estimate to perform the temporal and spatial trend analysis of annual surface freezing/thawing index at a set of 20 meteorological stations in Mongolia. The study indicates that the annual surface freezing index displays a general increasing trend at 70% of stations although the trend is not statistically significant, which corresponds to a slight winter cooling over the period 1987-2005 in Mongolia. However, the annual surface thawing index shows a statistically significant increase in Mongolia during the past 19 years. The surface thawing index has increased by 29 degrees C-days/yr in Mongolia, which is far greater than that in the high-latitudinal regions of Northern Hemisphere during recent decades. The intensive increase of annual surface thawing index is predicted to be responsible for the increase in active layer thickness, as well as the changes of permafrost distribution in this country. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | ACTIVE-LAYER THICKNESS ; INTERNATIONAL POLAR YEAR ; NORTH-CENTRAL ALASKA ; THERMAL STATE ; PERMAFROST ; HEMISPHERE ; CLIMATE |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000296311100011 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556478 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, Qinxue |
| 作者单位 | 1.Natl Inst Environm Studies, Ctr Reg Environm Res, Tsukuba, Ibaraki 3058506, Japan 2.Chinese Acad Sci, Cryosphere Res Stn Qinghai Tibet Plateau, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China 3.Mongolian Acad Sci, Inst Geog, Ulaanbaatar 210620, Mongol Peo Rep 4.Keio Univ, Grad Sch Media & Governance, Kanagawa 2528520, Japan |
| 推荐引用方式 GB/T 7714 | Wu, Tonghua,Wang, Qinxue,Zhao, Lin,et al. Observed trends in surface freezing/thawing index over the period 1987-2005 in Mongolia[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2011,69(1):105-111. |
| APA | Wu, Tonghua,Wang, Qinxue,Zhao, Lin,Batkhishig, Ochirbat,&Watanabe, Masataka.(2011).Observed trends in surface freezing/thawing index over the period 1987-2005 in Mongolia.COLD REGIONS SCIENCE AND TECHNOLOGY,69(1),105-111. |
| MLA | Wu, Tonghua,et al."Observed trends in surface freezing/thawing index over the period 1987-2005 in Mongolia".COLD REGIONS SCIENCE AND TECHNOLOGY 69.1(2011):105-111. |
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来源：寒区旱区环境与工程研究所
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