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DOI10.1016/j.atmosres.2021.105739
Winter vs. summer temperature variations on the southeastern Tibetan Plateau, 1718–2005 CE
Song M.; Wang R.; Ljungqvist F.C.; Wang X.; Yang T.
Date Issued2021
ISSN0169-8095
Volume261
Other AbstractThe annual mean temperature on the Tibetan Plateau (TP) has strongly increased over the past few decades, with larger warming in winter than in summer. Whether this different amplitude of change between seasons has persisted over longer time-scales in the past remains poorly understood, limiting our understanding of the mechanisms responsible. Here, we apply multivariate regression analysis and ensemble empirical mode decomposition (EEMD) to decompose winter (TDJF) and summer (TJJA) temperature reconstructions over the 1718–2005 CE period for the southeastern TP to investigate similarities and differences between winter and summer temperature changes, over multiple time-scales, as well as the driving factors behind the seasonal differences. The results reveal that the TDJF and TJJA reconstructions were significantly correlated throughout the study period, with the magnitude of the TDJF variations approximately six times greater than the TJJA variations. When the two reconstructions were decomposed over multiple time-scales, it was found that the consistency between winter and summer temperature reconstructions only existed at inter-annual scale. Assessing the driving factors, the main contributions to the TJJA and TDJF changes at the inter-annual and inter-decadal scales appear to be mainly the El Niño–Southern Oscillation (ENSO). The Pacific Decadal Oscillation (PDO) contribution was important to TJJA and TDJF changes at multi-decadal scales. Furthermore, we found that orbital parameters and the Atlantic Multidecadal Oscillation (AMO) was a major contributor to the changes in TJJA and TDJF at centennial scales, respectively. Both the TJJA and TDJF have a significant long-term increasing trend since c. 1850, mainly attributed to anthropogenic forcing. The detected similarities and differences between TDJF and TJJA at multiple time-scales provide new perspectives on the understanding the mechanisms behind climate change on the Tibetan Plateau and even entire East Asia. © 2021
enkeywordsExternal forcing; Global warming; Summer temperature; Temperature reconstructions; Tibetan Plateau; Winter temperature
journalAtmospheric Research
Source Publication中国科学院西北生态环境资源研究院
Document Type期刊论文
Identifierhttp://gcip.llas.ac.cn/handle/2XKMVOVA/236650
AffiliationKey Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of History, Stockholm University, Stockholm, 10691, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, 10691, Sweden; Swedish Collegium for Advanced Study, Linneanum, Thunbergsvägen 2, Uppsala, 7538, Sweden
Recommended Citation
GB/T 7714
Song M.,Wang R.,Ljungqvist F.C.,等. Winter vs. summer temperature variations on the southeastern Tibetan Plateau, 1718–2005 CE[J]. 中国科学院西北生态环境资源研究院,2021,261.
APA Song M.,Wang R.,Ljungqvist F.C.,Wang X.,&Yang T..(2021).Winter vs. summer temperature variations on the southeastern Tibetan Plateau, 1718–2005 CE.Atmospheric Research,261.
MLA Song M.,et al."Winter vs. summer temperature variations on the southeastern Tibetan Plateau, 1718–2005 CE".Atmospheric Research 261(2021).
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