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Quantifying air temperature evolution in the permafrost region from 1901 to 2014
Guo, DL (Guo, Donglin)1,2,3; Li, D (Li, Duo)4,5; Hua, W (Hua, Wei)3
Source PublicationINTERNATIONAL JOURNAL OF CLIMATOLOGY
2018
Volume38Issue:1Pages:66-76
DOI10.1002/joc.5161
Abstract

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.

Subject Area地理学
WOS IDWOS:000419093600006
Language英语
Indexed BySCIE
KeywordThermal State Tibetan Plateau Climate-change Arctic Amplification Northern-hemisphere Degradation Cmip5 Simulation Impacts Thaw
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国内
ISSN0899-8418
Department环境变化与地表过程重点实验室
PublisherWILEY
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8786
Collection图书馆
Corresponding AuthorGuo, DL (Guo, Donglin)
Affiliation1.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China;
2.Nanjing Univ Informat Sci & Technol, CIC FEMD, Nanjing, Jiangsu, Peoples R China;
3.Chengdu Univ Informat Technol, Sch Atmospher Sci, Joint Lab Climate & Environm Change, Chengdu, Sichuan, Peoples R China;
4.China Meteorol Adm, Natl Climate Ctr, Beijing, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Guo, DL ,Li, D ,Hua, W . Quantifying air temperature evolution in the permafrost region from 1901 to 2014[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(1):66-76.
APA Guo, DL ,Li, D ,&Hua, W .(2018).Quantifying air temperature evolution in the permafrost region from 1901 to 2014.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(1),66-76.
MLA Guo, DL ,et al."Quantifying air temperature evolution in the permafrost region from 1901 to 2014".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.1(2018):66-76.
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