Effects of stratified active layers on high-altitude permafrost warming: a case study on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Pan, Xicai1; Li, Yanping1; Yu, Qihao2; Shi, Xiaogang3; Yang, Daqing4; Roth, Kurt5 |
| 刊名 | CRYOSPHERE
 |
| 出版日期 | 2016 |
| 卷号 | 10期号:4页码:1591-1603 |
| ISSN号 | 1994-0416 |
| DOI | 10.5194/tc-10-1591-2016 |
| 通讯作者 | Li, Yanping(yanping.li@usask.ca) |
| 英文摘要 | Seasonally variable thermal conductivity in active layers is one important factor that controls the thermal state of permafrost. The common assumption is that this conductivity is considerably lower in the thawed than in the frozen state, lambda(t)/lambda(f) < 1. Using a 9-year dataset from the Qinghai-Tibet Plateau (QTP) in conjunction with the GEOtop model, we demonstrate that the ratio lambda(t)/lambda(f) may approach or even exceed 1. This can happen in thick (>1.5 m) active layers with strong seasonal total water content changes in the regions with summer-monsoon-dominated precipitation pattern. The conductivity ratio can be further increased by typical soil architectures that may lead to a dry interlayer. The unique pattern of soil hydraulic and thermal dynamics in the active layer can be one important contributor for the rapid permafrost warming at the study site. These findings suggest that, given the increase in air temperature and precipitation, soil hydraulic properties, particularly soil architecture in those thick active layers must be properly taken into account in permafrost models. |
| 收录类别 | SCI |
| WOS关键词 | NEAR-SURFACE PERMAFROST ; ASIAN SUMMER MONSOON ; CLIMATE-CHANGE ; THERMAL REGIME ; WATER ; SOIL ; CHINA ; ENERGY ; GEOTOP ; MODEL |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000381218000007 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557467 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Yanping |
| 作者单位 | 1.Univ Saskatchewan, Global Inst Water Secur, 11 Innovat Blvd, Saskatoon, SK S7N 3H5, Canada 2.Chinese Acad Sci, Lab Frozen Soils Engn, Cold & Arid Reg Environm & Engn Res Inst, Donggang West Rd 320, Lanzhou 730000, Peoples R China 3.CSIRO Land & Water, Christian Lab, Clunies Ross St, Canberra, ACT 2601, Australia 4.Environm Canada, Natl Hydrol Res Inst, 11 Innovat Blvd, Saskatoon, SK S7N 3H5, Canada 5.Heidelberg Univ, Inst Environm Phys, Neuenheimer Feld 229, D-69120 Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Pan, Xicai,Li, Yanping,Yu, Qihao,et al. Effects of stratified active layers on high-altitude permafrost warming: a case study on the Qinghai-Tibet Plateau[J]. CRYOSPHERE,2016,10(4):1591-1603. |
| APA | Pan, Xicai,Li, Yanping,Yu, Qihao,Shi, Xiaogang,Yang, Daqing,&Roth, Kurt.(2016).Effects of stratified active layers on high-altitude permafrost warming: a case study on the Qinghai-Tibet Plateau.CRYOSPHERE,10(4),1591-1603. |
| MLA | Pan, Xicai,et al."Effects of stratified active layers on high-altitude permafrost warming: a case study on the Qinghai-Tibet Plateau".CRYOSPHERE 10.4(2016):1591-1603. |
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来源：寒区旱区环境与工程研究所
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