气候变化领域集成服务门户(CCPortal): Hydro-thermal boundary conditions at different underlying surfaces in a permafrost region of the Qinghai-Tibet Plateau

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DOI	10.1016/j.scitotenv.2019.03.090
	Hydro-thermal boundary conditions at different underlying surfaces in a permafrost region of the Qinghai-Tibet Plateau
	Zhang, Mingyi; Wang, Jiwei; Lai, Yuanming
发表日期	2019
ISSN	0048-9697
EISSN	1879-1026
起始页码	1190
结束页码	1203
卷号	670
英文摘要	Hydro-thermal properties of permafrost and its distribution are sensitive to climate changes and human activities. Accurate and reasonable prediction on aforementioned information is important for eco-environment construction and vital infrastructures development. To model the current and future states of permafrost, it is a key challenge to effectively determine the upper hydro-thermal boundary conditions for permafrost models under changing climate and different underlying surfaces at proper spatial and temporal scales. An approach, combined regional climate downscaling method with model output statistics method, was developed to produce a time series of air temperature, surface temperatures, and surface unfrozen water contents for different underlying surfaces. It provided various climate and surface parameters at a spatial scale on the order of 10(2) m(2) for engineering designs, which was used to predict boundary conditions under possible climate scenarios. The predicted and simulated models were calibrated and validated by the monitored data at an experimental site in Chumar, China, close to the Qinghai-Tibet Railway and the Qinghai-Tibet Highway. Results show that the multiple linear regression model (MLRM) can predict the current states and future changes of upper hydro-thermal boundary conditions for permafrost while the original states of natural surface are modified by natural or human factors on the condition of complicated climatic and complex topography regions. The statistical regression model (SRM) based on the outputs of regional climate model (RCM) and MLRM provides a simple method for the convenience of numerical calculation. These results also indicate the possible applications to other areas and situations. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Hydro-thermal boundary condition; Regional climate model; Multiple linear regression; Permafrost region; Qinghai-Tibet Plateau; WRF
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS关键词	SOIL-MOISTURE ; NUMERICAL-MODEL ; THERMAL REGIME ; ACTIVE LAYER ; COLD REGION ; CLIMATE ; VALIDATION ; EMBANKMENT ; AIR ; TEMPERATURE
WOS记录号	WOS:000464681800118
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239453
作者单位	[Zhang, Mingyi] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mingyi,Wang, Jiwei,Lai, Yuanming. Hydro-thermal boundary conditions at different underlying surfaces in a permafrost region of the Qinghai-Tibet Plateau[J],2019,670.
APA	Zhang, Mingyi,Wang, Jiwei,&Lai, Yuanming.(2019).Hydro-thermal boundary conditions at different underlying surfaces in a permafrost region of the Qinghai-Tibet Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,670.
MLA	Zhang, Mingyi,et al."Hydro-thermal boundary conditions at different underlying surfaces in a permafrost region of the Qinghai-Tibet Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 670(2019).