DOI: 10.1175/JCLI-D-11-00617.1
Scopus记录号: 2-s2.0-84867663408
论文题名: Asian origin of interannual variations of summer climate over the extratropical North Atlantic ocean
作者: Zhao P. ; Yang S. ; Wu R. ; Wen Z. ; Chen J. ; Wang H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 19 起始页码: 6594
结束页码: 6609
语种: 英语
Scopus关键词: Atmosphere-land interaction
; Atmosphere-ocean interactions
; Climate variability
; Interannual variability
; North Atlantic Ocean
; Sea surface temperature (SST)
; Summer/warm season
; Atmospheric temperature
; Climate change
; Experiments
; Meteorology
; Sensitivity analysis
; Surface measurement
; Troposphere
; Oceanography
; air-sea interaction
; annual variation
; atmospheric circulation
; extratropical environment
; heat transfer
; sea surface temperature
; sensitivity analysis
; summer
; temperature
; thermodynamics
; troposphere
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: The authors have identified an interannual relationship between Asian tropospheric temperature and the North Atlantic Ocean sea surface temperature (SST) during summer (May-September) and discussed the associated features of atmospheric circulation over the Atlantic-Eurasian region. When tropospheric temperature is high (low) over Asia, positive (negative) SST anomalies appear in the extratropical North Atlantic. This relationship is well supported by the changes in background atmospheric circulation and ocean-atmosphere-land thermodynamic processes. When heat transfer fromthe land surface to the atmosphere over Asia strengthens, local tropospheric temperature increases and positive temperature anomalies propagate westward from Asia to the North Atlantic, leading to an increase in summer tropospheric temperature over the Atlantic-Eurasian region. Accordingly, a deep anomalous ridge occurs over the extratropical North Atlantic Ocean, with low-level southerly anomalies over the western portion of the ocean. Sensitivity experiments with climate models show that the interannual variations of the North Atlantic-Eurasian atmospheric circulation may not be forced by the extratropical Atlantic SST. Instead, experiments with changing Asian land surface heating capture the above observed features of atmospheric circulation anomalies, westward propagation of tropospheric anomalies, and Atlantic SST anomalies. The consistency between the observational and model results indicates a possible impact of Asian land heating on the development of atmospheric circulation and SST anomalies over the Atlantic-Eurasian region. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52174
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: State Key Laboratory of Severe Weather, and National Meteorological Information Centre, China Meteorological Administration, Beijing, China; Climate Prediction Center, NOAA/NWS/NCEP, Camp Springs, MD, United States; Institute of Space and Earth Information Science, Chinese University of Hong Kong, Hong Kong; Department of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; Chinese Academy of Meteorological Sciences, Beijing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhao P.,Yang S.,Wu R.,et al. Asian origin of interannual variations of summer climate over the extratropical North Atlantic ocean[J]. Journal of Climate,2012-01-01,25(19)