DOI: 10.1175/JCLI-D-15-0108.1
Scopus记录号: 2-s2.0-84960879854
论文题名: Composite analysis of the effects of ENSO events on Antarctica
作者: Welhouse L.J. ; Lazzara M.A. ; Keller L.M. ; Tripoli G.J. ; Hitchman M.H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 5 起始页码: 1797
结束页码: 1808
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climatology
; Oceanography
; Sea level
; Surface waters
; Wave propagation
; Weather forecasting
; Antarctic oscillation
; Antarctica
; EL Nino
; ENSO
; Geographic location
; La nina
; Nickel
; air-sea interaction
; Antarctic Oscillation
; El Nino
; El Nino-Southern Oscillation
; geopotential
; La Nina
; sea level pressure
; sea surface temperature
; wave propagation
; weather forecasting
; Amundsen Sea
; Antarctica
; Bellingshausen Sea
; Southern Ocean
英文摘要: Previous investigations of the relationship between El Niño-Southern Oscillation (ENSO) and the Antarctic climate have focused on regions that are impacted by both El Niño and La Niña, which favors analysis over the Amundsen and Bellingshausen Seas (ABS). Here, 35 yr (1979-2013) of European Centre for Medium-Range Weather Forecasts interim reanalysis (ERA-Interim) data are analyzed to investigate the relationship between ENSO and Antarctica for each season using a compositing method that includes nine El Niño and nine La Niña periods. Composites of 2-m temperature (T2m), sea level pressure (SLP), 500-hPa geopotential height, sea surface temperatures (SST), and 300-hPa geopotential height anomalies were calculated separately for El Niño minus neutral and La Niña minus neutral conditions, to provide an analysis of features associated with each phase of ENSO. These anomaly patterns can differ in important ways from El Niño minus La Niña composites, which may be expected from the geographical shift in tropical deep convection and associated pattern of planetary wave propagation into the Southern Hemisphere. The primary new result is the robust signal, during La Niña, of cooling over East Antarctica. This cooling is found from December to August. The link between the southern annular mode (SAM) and this cooling is explored. Both El Niño and La Niña experience the weakest signal during austral autumn. The peak signal for La Niña occurs during austral summer, while El Niño is found to peak during austral spring. © 2016 American Meteorological Society. 资助项目: NOAA, National Oceanic and Atmospheric Administration
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50189
Appears in Collections: 气候变化事实与影响
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作者单位: Antarctic Meteorological Research Center, Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI, United States; Department of Physical Sciences, School of Arts and Sciences, Madison Area Technical College, Madison, WI, United States; Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States
Recommended Citation:
Welhouse L.J.,Lazzara M.A.,Keller L.M.,et al. Composite analysis of the effects of ENSO events on Antarctica[J]. Journal of Climate,2016-01-01,29(5)