干旱区生态环境知识资源中心(Arid): Evaluation of reanalysis air temperature products in permafrost regions on the Qinghai-Tibetan Plateau

Arid

DOI	10.1007/s00704-019-02888-8
	Evaluation of reanalysis air temperature products in permafrost regions on the Qinghai-Tibetan Plateau
	Hu, Guojie 1; Zhao, Lin 1,2; Wu, Xiaodong 1; Li, Ren 1; Wu, Tonghua 1; Su, Youqi 3; Hao, Junming 1,4
通讯作者	Hu, Guojie
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2019
卷号	138 期号:3-4 页码:1457-1470
英文摘要	Surface air temperature is important for climate change, hydrological, and ecosystems undergoing climate warming in the permafrost regions on the Qinghai-Tibetan Plateau (QTP). We monitored daily air temperatures at five sites (alpine desert, alpine desert steppe, alpine steppe, alpine meadow, and alpine wet meadow) from 2011 to 2015 in permafrost regions on the QTP. Using this data, we evaluated the performance of five different reanalysis air temperature products (CFSR, ERA-Interim, GLDAS-NOAH, MERRA, JRA-55, and CMFD). These results demonstrated that the ERA-Interim air temperature products exhibited the best performance at the majority of sites. However, the original ERA-Interim air temperature products were found to overestimate air temperature at most sites. The calibration models were established by the observed daily air temperatures measured from 2013 to 2015 for the ERA-Interim air temperature products, which validated with observational data from 2011 to 2012. Following calibration, ERA-Interim products were found to be closer to the observations made across all sites. In addition, this paper demonstrated a warming trend present in month, seasonal, and annual mean air temperature from the calibration results collected from 1980 to 2015. These results demonstrated that the largest warming trend was observed in February, while the smallest warming trend was observed in March. We demonstrated that all air temperatures warmed fastest in the summer and winter, more slowly in autumn, and the slowest in spring at the majority of sites tested. In addition, we found that the average annual air temperature warming trends were 0.0398, 0.0394, 0.0288, 0.0259, and 0.0254 degrees C/year in the alpine desert steppe, alpine desert, alpine steppe, alpine meadow, and alpine wet meadow in the permafrost regions on the QTP, respectively. These findings generate a useful tool for the recognizing of the variation in permafrost under climate change in permafrost regions on the QTP.
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000494710000017
WOS关键词	SOIL-TEMPERATURE ; CLIMATE ; SIMULATION ; ENERGY ; CHINA
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
EI主题词	2019-11-01
来源机构	南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310592
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Xizang Plateau, Lanzhou 730000, Gansu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Guojie,Zhao, Lin,Wu, Xiaodong,et al. Evaluation of reanalysis air temperature products in permafrost regions on the Qinghai-Tibetan Plateau[J]. 南京信息工程大学,2019,138(3-4):1457-1470.
APA	Hu, Guojie.,Zhao, Lin.,Wu, Xiaodong.,Li, Ren.,Wu, Tonghua.,...&Hao, Junming.(2019).Evaluation of reanalysis air temperature products in permafrost regions on the Qinghai-Tibetan Plateau.THEORETICAL AND APPLIED CLIMATOLOGY,138(3-4),1457-1470.
MLA	Hu, Guojie,et al."Evaluation of reanalysis air temperature products in permafrost regions on the Qinghai-Tibetan Plateau".THEORETICAL AND APPLIED CLIMATOLOGY 138.3-4(2019):1457-1470.