气候变化领域集成服务门户(CCPortal): Quantifying air temperature evolution in the permafrost region from 1901 to 2014

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DOI	10.1002/joc.5161
	Quantifying air temperature evolution in the permafrost region from 1901 to 2014
	Guo, Donglin; Li, Duo; Hua, Wei
通讯作者	Guo, DL (通讯作者)
发表日期	2018
ISSN	0899-8418
EISSN	1097-0088
起始页码	66
结束页码	76
卷号	38 期号:1
英文摘要	Permafrost is sensitive to climate change. In recent decades, a growing body of research has focused mainly on the study of permafrost thaw, but leaving the climate change in the permafrost region that has not been adequately assessed, which is of first importance for the research on permafrost thaw. Using gridded observations from the Climatic Research Unit (CRU), in conjunction with the European Centre for Medium-Range Weather Forecasts Reanalysis Interim (ERA-Interim) and Japanese 55-year Reanalysis (JRA-55) data, this study investigates characteristics of air temperature evolution in the region of permafrost throughout the 20th century. Results show that yearly air temperatures in the permafrost region of the Northern Hemisphere experienced a statistically significant warming, with trends of 0.13 degrees Cdecade(-1) for 1901-2014 and 0.40 degrees Cdecade(-1) for 1979-2014. Winter air temperatures showed the greatest increase during 1901-2014, while autumn air temperatures increased the most during 1979-2014. In addition, increases in air temperature in high-latitude permafrost sub-region are greater than those in high-elevation permafrost sub-region, and air temperatures in the permafrost sub-region of Mongolia have the largest trend from 1901 to 2014, followed by those in Russia, Alaska, Canada, and China. Air temperatures in the permafrost region increased 1.7 times more than temperatures globally from 1901 to 2014, and underwent an increase at a rate of 0.32 degrees Cdecade(-1) during the period 1998-2014, when the global warming hiatus occurred with a trend of 0.06 degrees Cdecade(-1). This implies that permafrost thaw may have continued during the global warming hiatus period. The close agreement between CRU data and ERA-Interim and JRA-55 reanalysis data indicates good reliability of air temperature evolution characteristics. These results provide information relevant to climate change in the permafrost region, and are useful for researching and understanding historical permafrost change.
关键词	THERMAL STATE TIBETAN PLATEAU CLIMATE-CHANGE ARCTIC AMPLIFICATION NORTHERN-HEMISPHERE DEGRADATION CMIP5 SIMULATION IMPACTS THAW
英文关键词	air temperature; permafrost region; permafrost thaw; CRU
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000419093600006
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259290
推荐引用方式 GB/T 7714	Guo, Donglin,Li, Duo,Hua, Wei. Quantifying air temperature evolution in the permafrost region from 1901 to 2014[J]. 中国科学院青藏高原研究所,2018,38(1).
APA	Guo, Donglin,Li, Duo,&Hua, Wei.(2018).Quantifying air temperature evolution in the permafrost region from 1901 to 2014.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(1).
MLA	Guo, Donglin,et al."Quantifying air temperature evolution in the permafrost region from 1901 to 2014".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.1(2018).