DOI: 10.1175/JCLI-D-17-0562.1
Scopus记录号: 2-s2.0-85049735801
论文题名: Interdecadal variability of the warm Arctic and cold Eurasia pattern and its North Atlantic origin
作者: Sung M.-K. ; Kim S.-H. ; Kim B.-M. ; Choi Y.-S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 15 起始页码: 5793
结束页码: 5810
语种: 英语
英文关键词: Arctic
; Atmospheric
; Atmospheric circulation
; Blocking
; Rossby waves
; Stationary waves
; Waves
Scopus关键词: Atmospherics
; Climatology
; Oceanography
; Orthogonal functions
; Waves
; Arctic
; Atmospheric circulation
; Blocking
; Rossby wave
; Stationary waves
; Mechanical waves
; air temperature
; atmospheric blocking
; atmospheric circulation
; atmospheric wave
; decadal variation
; empirical orthogonal function analysis
; Northern Hemisphere
; Rossby wave
; standing wave
; Arctic
; Atlantic Ocean
; Atlantic Ocean (North)
; Eurasia
英文摘要: This study investigates the origin of the interdecadal variability in the warm Arctic and cold Eurasia (WACE) pattern, which is defined as the second empirical orthogonal function of surface air temperature (SAT) variability over the Eurasian continent in Northern Hemisphere winter, by analyzing the Twentieth Century Reanalysis dataset. While previous studies highlight recent enhancement of the WACE pattern, ascribing it to anthropogenic warming, the authors found that the WACE pattern has experienced a seemingly periodic interdecadal variation over the twentieth century. This long-term variation in the Eurasian SAT is attributable to the altered coupling between the Siberian high (SH) and intraseasonal Rossby wave emanating from the North Atlantic, as the local wave branch interacts with the SH and consequentially enhances the continental temperature perturbation. It is further identified that these atmospheric circulation changes in Eurasia are largely controlled by the decadal amplitude modulation of the climatological stationary waves over the North Atlantic region. The altered decadal mean condition of stationary wave components brings changes in local baroclinicity and storm track activity over the North Atlantic, which jointly change the intraseasonal Rossby wave generation and propagation characteristics as well. With simple stationary wave model experiments, the authors confirm how the altered mean flow condition in the North Atlantic acts as a source for the growth of the Rossby wave that leads to the change in the downstream WACE pattern. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111413
Appears in Collections: 气候减缓与适应
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作者单位: Ewha Womans University, Seoul, Seoul, South Korea; Korea Polar Research Institute, Incheon, South Korea; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Sung M.-K.,Kim S.-H.,Kim B.-M.,et al. Interdecadal variability of the warm Arctic and cold Eurasia pattern and its North Atlantic origin[J]. Journal of Climate,2018-01-01,31(15)