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Recent intensification of hydroclimatic change in the middle reaches of the Yangtz River Basin driven by PDO, ENSO and WPSH
Cai, Qiufang1,2,3; Qian, Hengjun1,4; Liu, Yu1,2,3,5; Fang, Congxi1; Zhang, Hanyu1,4; Li, Qiang1,2; Sun, Changfeng1; Song, Huiming1,2; Liu, Ruoshi5; Sun, Junyan1
Corresponding AuthorCai, Qiufang(caiqf@ieecas.cn) ; Liu, Yu(liuyu@loess.llqg.ac.cn)
2021-10-19
Source PublicationCLIMATE DYNAMICS
ISSN0930-7575
Pages16
AbstractHow hydroclimate will change in the future has been of great interest with the increasing concern of global warming. Acquirement of ample high-resolution proxy-based reconstructions will aid to answer such question by increasing the accuracy of climate prediction models. However, discrepancies among existing reconstructions in the southeast part of China (SEC) has aroused great uncertainty about the hydroclimatic conditions. Here we present an annually-resolved June-August scPDSI reconstruction and a June-July relative humidity reconstruction from 1876 to 2015 in the middle reaches of the Yangtz River, based on accurately-dated tree-ring materials. The reconstructions well reproduce the instrumental records, with explained variance of 48.82% and 46.79%. A secular wetting trend is found in the study area from 1876 to 2000, then it dried quickly. The driest (2006-2015) and wettest (1943-1955) periods both occurred after 1940, and 40% of the top 10 driest years occurred in the twenty-first century. Overall, an increasing intensified hydroclimatic variation is identified, especially significant in the recent decade. The historical summer hydroclimatic fluctuations, which were found closely related to the concurrent temperature variations, show broadly large spatial and temporal synchronicity with existing hydroclimatic reconstructions in SEC, while the intensity of variation is intermittently different. Hydroclimatic variation in the study area might be a comprehensive effect of Pacific Decadal Oscillation (PDO), Western Pacific Subtropical High (WPSH) and El Nino-Southern Oscillation (ENSO) variations. Our reconstruction provides additional support not only for a comprehensive understanding of the spatiotemporal characteristics of hydroclimatic variations, but also for the diagnosis and prediction of hydroclimatic anomalies.
KeywordscPDSI Relative humidity Tree rings PDO ENSO WPSH
DOI10.1007/s00382-021-05990-8
WOS KeywordTREE-RING DELTA-O-18 ; FAGUS-SYLVATICA ; TEMPERATURE RECONSTRUCTION ; PRECIPITATION RECORDS ; TROPICAL PACIFIC ; WESTERN PACIFIC ; NORTH-ATLANTIC ; SOUTH CHINA ; SUMMER HEAT ; 2 CENTURIES
Indexed BySCI ; SCI
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB40010300] ; National Natural Science Foundation of China[41671212] ; State Key Laboratory of Loess and Quaternary Geology foundation (SKLLQG)
WOS Research AreaMeteorology & Atmospheric Sciences
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology foundation (SKLLQG)
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000708836100002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17125
Collection现代环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorCai, Qiufang; Liu, Yu
Affiliation1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Yanxiang Rd, Xian 710061, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
Recommended Citation
GB/T 7714
Cai, Qiufang,Qian, Hengjun,Liu, Yu,et al. Recent intensification of hydroclimatic change in the middle reaches of the Yangtz River Basin driven by PDO, ENSO and WPSH[J]. CLIMATE DYNAMICS,2021:16.
APA Cai, Qiufang.,Qian, Hengjun.,Liu, Yu.,Fang, Congxi.,Zhang, Hanyu.,...&Sun, Junyan.(2021).Recent intensification of hydroclimatic change in the middle reaches of the Yangtz River Basin driven by PDO, ENSO and WPSH.CLIMATE DYNAMICS,16.
MLA Cai, Qiufang,et al."Recent intensification of hydroclimatic change in the middle reaches of the Yangtz River Basin driven by PDO, ENSO and WPSH".CLIMATE DYNAMICS (2021):16.
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