DOI: 10.1007/s00382-017-4059-1
Scopus记录号: 2-s2.0-85040340792
论文题名: Tropical Indian Ocean warming contributions to China winter climate trends since 1960
作者: Wu Q. ; Yao Y. ; Liu S. ; Cao D.D. ; Cheng L. ; Hu H. ; Sun L. ; Yao Y. ; Yang Z. ; Gao X. ; Schroeder S.R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-07-08 起始页码: 2965
结束页码: 2987
语种: 英语
英文关键词: AMIP
; China
; Climate trends
; East Asian Winter Monsoon
; Precipitation
; Sea surface temperature
; Tropical Indian Ocean
Scopus关键词: anticyclone
; atmosphere-ocean coupling
; atmospheric modeling
; diabatic process
; monsoon
; precipitation (climatology)
; rainfall
; regional climate
; sea surface temperature
; teleconnection
; trend analysis
; warming
; winter
; China
; Indian Ocean
; Indian Ocean (Tropical)
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: This study investigates observed and modeled contributions of global sea surface temperature (SST) to China winter climate trends in 1960–2014, including increased precipitation, warming through about 1997, and cooling since then. Observations and Atmospheric Model Intercomparison Project (AMIP) simulations with prescribed historical SST and sea ice show that tropical Indian Ocean (TIO) warming and increasing rainfall causes diabatic heating that generates a tropospheric wave train with anticyclonic 500-hPa height anomaly centers in the TIO or equatorial western Pacific (TIWP) and northeastern Eurasia (EA) and a cyclonic anomaly over China, referred to as the TIWP-EA wave train. The cyclonic anomaly causes Indochina moisture convergence and southwesterly moist flow that enhances South China precipitation, while the northern anticyclone enhances cold surges, sometimes causing severe ice storms. AMIP simulations show a 1960–1997 China cooling trend by simulating increasing instead of decreasing Arctic 500-hPa heights that move the northern anticyclone into Siberia, but enlarge the cyclonic anomaly so it still simulates realistic China precipitation trend patterns. A separate idealized TIO SST warming simulation simulates the TIWP-EA feature more realistically with correct precipitation patterns and supports the TIWP-EA teleconnection as the primary mechanism for long-term increasing precipitation in South China since 1960. Coupled Model Intercomparison Project (CMIP) experiments simulate a reduced TIO SST warming trend and weak precipitation trends, so the TIWP-EA feature is absent and strong drying is simulated in South China for 1960–1997. These simulations highlight the need for accurately modeled SST to correctly attribute regional climate trends. © 2018, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109102
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: School of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu 210023, China; National Climate Center, China Meteorological Administration, Beijing, 100081, China; Hebei Climate Center, Shijiazhuang, Hebei 050021, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States
Recommended Citation:
Wu Q.,Yao Y.,Liu S.,et al. Tropical Indian Ocean warming contributions to China winter climate trends since 1960[J]. Climate Dynamics,2018-01-01,51(2018-07-08)