气候变化领域集成服务门户(CCPortal): The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau

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DOI	10.1007/s00376-021-1066-2
	The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau
	Ma, Junjie; Li, Ren; Liu, Hongchao; Huang, Zhongwei; Wu, Tonghua; Hu, Guojie; Xiao, Yao; Zhao, Lin; Du, Yizhen; Yang, Shuhua
通讯作者	Li, R (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Peoples R China.
发表日期	2022
ISSN	0256-1530
EISSN	1861-9533
起始页码	189
结束页码	200
卷号	39 期号:1
英文摘要	The surface energy budget is closely related to freeze-thaw processes and is also a key issue for land surface process research in permafrost regions. In this study, in situ data collected from 2005 to 2015 at the Tanggula site were used to analyze surface energy regimes, the interaction between surface energy budget and freeze-thaw processes. The results confirmed that surface energy flux in the permafrost region of the Qinghai-Tibetan Plateau exhibited obvious seasonal variations. Annual average net radiation (R-n) for 2010 was 86.5 W m(-2), with the largest being in July and smallest in November. Surface soil heat flux (G(0)) was positive during warm seasons but negative in cold seasons with annual average value of 2.7 W m(-2). Variations in R-n and G(0) were closely related to freeze-thaw processes. Sensible heat flux (H) was the main energy budget component during cold seasons, whereas latent heat flux (LE) dominated surface energy distribution in warm seasons. Freeze-thaw processes, snow cover, precipitation, and surface conditions were important influence factors for surface energy flux. Albedo was strongly dependent on soil moisture content and ground surface state, increasing significantly when land surface was covered with deep snow, and exhibited negative correlation with surface soil moisture content. Energy variation was significantly related to active layer thaw depth. Soil heat balance coefficient K was > 1 during the investigation time period, indicating the permafrost in the Tanggula area tended to degrade.
关键词	SOIL HYDROTHERMAL REGIME CLIMATE-CHANGE SOLAR-RADIATION WATER STORAGE LAND EVAPOTRANSPIRATION BALANCE ALBEDO CARBON SIMULATIONS
英文关键词	Qinghai-Tibetan Plateau; permafrost; energy budget; freeze-thaw process; thawing depth
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000742024600013
来源期刊	ADVANCES IN ATMOSPHERIC SCIENCES
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/253952
作者单位	[Ma, Junjie; Li, Ren; Wu, Tonghua; Hu, Guojie; Xiao, Yao; Du, Yizhen; Yang, Shuhua] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibet Plateau, Lanzhou 730000, Peoples R China; [Ma, Junjie; Du, Yizhen; Yang, Shuhua] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Liu, Hongchao; Huang, Zhongwei] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China; [Zhao, Lin] Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China
推荐引用方式 GB/T 7714	Ma, Junjie,Li, Ren,Liu, Hongchao,et al. The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2022,39(1).
APA	Ma, Junjie.,Li, Ren.,Liu, Hongchao.,Huang, Zhongwei.,Wu, Tonghua.,...&Yang, Shuhua.(2022).The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau.ADVANCES IN ATMOSPHERIC SCIENCES,39(1).
MLA	Ma, Junjie,et al."The Surface Energy Budget and Its Impact on the Freeze-thaw Processes of Active Layer in Permafrost Regions of the Qinghai-Tibetan Plateau".ADVANCES IN ATMOSPHERIC SCIENCES 39.1(2022).