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	Characteristics of Water-Heat Exchanges and Inconsistent Surface Temperature Changes at an Elevational Permafrost Site on the Qinghai-Tibet Plateau
	Luo, D. L.1; Jin, H. J.1,2; He, R. X.1; Wang, X. F.3; Muskett, R. R.4; Marchenko, S. S.1,4; Romanovsky, V. E.4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-09-27
卷号	123期号:18页码:10404-10422
关键词	elevational permafrost surface temperature soil heat flux radiation budget hydrothermal processes albedo
ISSN号	2169-897X
DOI	10.1029/2018JD028298
通讯作者	Luo, D. L.(luodongliang@lzb.ac.cn)
英文摘要	Increase of surface temperatures has long been recognized as an unequivocal response to radiative forcing and one of the most important implications for global warming. However, it remains unclear whether the variation of ground surface temperature (GST) and soil temperatures is consistent with simultaneous changes of the near-surface air and land (or skin) surface temperatures (T-a and LST). In this study, a seven-year continuous observation of GST, T-a, and surface water and heat exchange was carried out at an elevational permafrost site at Chalaping, northeastern Qinghai-Tibet Plateau. Results showed a distinct retarding of warming on the ground surface and subsurface under the presence of dense vegetation and moist peat substrates. Mean annual T-a and LST increased at noteworthy rates of 0.22 and 0.32 degrees C/a, respectively, while mean annual GST increased only at a rate of 0.057 degrees C/a. No obvious trends were detected for the four radiation budgets except the soil heat flux (G), which significantly increased at a rate of 0.29 W.m(-2).a(-1), presumably inducing the melting of ground ice and resulted in much higher moisture content through the summers of 2015 and 2016 than preceding years and subsequent 2017 at the depths between 80 and 120 cm. However, no noticeable immediate variations of soil temperatures occurred owing to the large latent heat effect (thermal inertia) and the extending zero-curtain period. We suggest that a better protected eco-environment, particularly the surface vegetation, helps preserving the underlying permafrost, and thus to mitigates the potential degradation of elevational permafrost on the Qinghai-Tibet Plateau.
收录类别	SCI
WOS关键词	INTERNATIONAL POLAR YEAR ; ACTIVE-LAYER ; CLIMATE-CHANGE ; HYDROLOGICAL PROCESSES ; VEGETATION COVER ; NORTHWEST CHINA ; THERMAL REGIME ; ALPINE MEADOW ; SOURCE AREAS ; LAND
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000447807300023
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558265
专题	寒区旱区环境与工程研究所
通讯作者	Luo, D. L.
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Gansu, Peoples R China 2.Harbin Inst Technol, Sch Civil Engn, Harbin, Heilongjiang, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Heihe Remote Sensing Expt Res Stn, Lanzhou, Gansu, Peoples R China 4.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA
推荐引用方式 GB/T 7714	Luo, D. L.,Jin, H. J.,He, R. X.,et al. Characteristics of Water-Heat Exchanges and Inconsistent Surface Temperature Changes at an Elevational Permafrost Site on the Qinghai-Tibet Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10404-10422.
APA	Luo, D. L..,Jin, H. J..,He, R. X..,Wang, X. F..,Muskett, R. R..,...&Romanovsky, V. E..(2018).Characteristics of Water-Heat Exchanges and Inconsistent Surface Temperature Changes at an Elevational Permafrost Site on the Qinghai-Tibet Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10404-10422.
MLA	Luo, D. L.,et al."Characteristics of Water-Heat Exchanges and Inconsistent Surface Temperature Changes at an Elevational Permafrost Site on the Qinghai-Tibet Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10404-10422.

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