DOI: 10.1175/JCLI-D-17-0793.1
Scopus记录号: 2-s2.0-85052961252
论文题名: Nearly synchronous multidecadal oscillations of surface air temperature in Punta Arenas and the Atlantic multidecadal oscillation index
作者: Kayano M.T. ; Setzer A.W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 18 起始页码: 7237
结束页码: 7248
语种: 英语
英文关键词: Multidecadal variability
; North Atlantic Oscillation
; Oscillations
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Ice
; Surface waters
; Atlantic multidecadal oscillations
; Multi-decadal time scale
; Multidecadal variability
; North Atlantic oscillations
; Oscillations
; Sea surface temperature (SST)
; Southern south america
; Surface air temperatures
; Oceanography
英文摘要: The Atlantic multidecadal oscillation (AMO) signature in southern South America (SA) is examined using the surface air temperature (T-air) of Punta Arenas, Chile (53.0°S, 70.85°W), during the 1888-2016 period. The T-air shows multidecadal oscillations with a significant positive correlation of 0.77 to theAMOindex. The relations of the Punta Arenas T-air time series with the AMO-related global sea surface temperature (SST) and regional circulation anomaly patterns are discussed. During the warm (cold) AMO phase, a cold (warm) center in southwestern Atlantic waters induces low-level anticyclonic (cyclonic) anomalies in the region, which together with the cyclonic (anticyclonic) anomalies in the southeastern Pacific channel the northerly (southerly) flow over southern SA. This meridional flow transports warm (cold) air from lower (higher) latitudes into the Punta Arenas region. Therefore, the temperature horizontal advection at the low level is the main thermodynamic process that alters the Punta Arenas T-air in a multidecadal time scale. The use of a relation between a long T-air surface sensor series in southern SA with theAMOpresents a novel approach in climate monitoring and modeling. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111407
Appears in Collections: 气候减缓与适应
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作者单位: Instituto Nacional de Pesquisas Espaciais, Centro de Previsão de Tempo e Estudos Climáticos, São José dos Campos, São Paulo, Brazil
Recommended Citation:
Kayano M.T.,Setzer A.W.. Nearly synchronous multidecadal oscillations of surface air temperature in Punta Arenas and the Atlantic multidecadal oscillation index[J]. Journal of Climate,2018-01-01,31(18)