Climate Change Data Portal
DOI | 10.3724/SP.J.1226.2021.20024 |
Ground temperature variation and its response to climate change on the northern Tibetan Plateau | |
Wan, GuoNing; Yang, MeiXue; Wang, XueJia | |
通讯作者 | Yang, MX (通讯作者),Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China. |
发表日期 | 2021 |
ISSN | 1674-3822 |
起始页码 | 299 |
结束页码 | 313 |
卷号 | 13期号:4 |
英文摘要 | Ground temperature plays a significant role in the interaction between the land surface and atmosphere on the Tibetan Plateau (TP). Under the background of temperature warming, the TP has witnessed an accelerated warming trend in frozen ground temperature, an increasing active layer thickness, and the melting of underground ice. Based on high-resolution ground temperature data observed from 1997 to 2012 on the northern TP, the trend of ground temperature at each observation site and its response to climate change were analyzed. The results showed that while the ground temperature at different soil depths showed a strong warming trend over the observation period, the warming in winter is more significant than that in summer. The warming rate of daily minimum ground temperature was greater than that of daily maximum ground temperature at the TTH and MS3608 sites. During the study period, thawing occurred earlier, whereas freezing happened later, resulting in shortened freezing season and a thinner frozen layer at the BJ site. And a zero-curtain effect develops when the soil begins to thaw or freeze in spring and autumn. From 1997 to 2012, the average summer air temperature and precipitation in summer and winter from six meteorological stations along the Qinghai-Tibet highway also demonstrated an increasing trend, with a more significant temperature increase in winter than in summer. The ground temperature showed an obvious response to air temperature warming, but the trend varied significantly with soil depths due to soil heterogeneity. |
关键词 | SOIL-MOISTURETHERMAL STATEACTIVE-LAYERPERMAFROST DISTRIBUTIONFREEZING PROCESSESDESERTIFICATIONSIMULATIONSHEMISPHERESCIENCESURFACE |
英文关键词 | ground temperature; soil freezing-thawing processes; the Tibetan Plateau; climate change |
语种 | 英语 |
WOS研究方向 | Physical Geography |
WOS类目 | Geography, Physical |
WOS记录号 | WOS:000686566700003 |
来源期刊 | SCIENCES IN COLD AND ARID REGIONS |
来源机构 | 中国科学院西北生态环境资源研究院 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/253664 |
作者单位 | [Wan, GuoNing; Yang, MeiXue; Wang, XueJia] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Yulong Snow Mt Natl Field Observat & Res Stn Cryo, Lanzhou 730000, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Wan, GuoNing,Yang, MeiXue,Wang, XueJia. Ground temperature variation and its response to climate change on the northern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,13(4). |
APA | Wan, GuoNing,Yang, MeiXue,&Wang, XueJia.(2021).Ground temperature variation and its response to climate change on the northern Tibetan Plateau.SCIENCES IN COLD AND ARID REGIONS,13(4). |
MLA | Wan, GuoNing,et al."Ground temperature variation and its response to climate change on the northern Tibetan Plateau".SCIENCES IN COLD AND ARID REGIONS 13.4(2021). |
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