DOI: 10.1175/JCLI-D-11-00261.1
Scopus记录号: 2-s2.0-84865151609
论文题名: Mechanisms Involved in the amplification of the 11-yr solar cycle signal in the tropical pacific ocean
作者: Misios S. ; Schmidt H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 14 起始页码: 5102
结束页码: 5118
语种: 英语
Scopus关键词: Coupled models
; Decadal variability
; Ensembles
; ENSO
; Filtering technique
; Solar cycle
; Feedback
; Natural convection
; Nickel compounds
; Oceanography
; Solar energy
; Tropics
; atmosphere-ocean coupling
; atmospheric general circulation model
; climate feedback
; cooling
; decadal variation
; El Nino-Southern Oscillation
; ensemble forecasting
; heat transfer
; sea surface temperature
; solar cycle
; warming
; Atlantic Ocean
; Indian Ocean
; Indian Ocean (Tropical)
; Pacific Ocean
; Pacific Ocean (Tropical)
英文摘要: It is debated whether the response of the tropical Pacific Ocean to the 11-yr solar cycle forcing resembles a La Niña- or El Niño-like signal. To address this issue, ensemble simulations employing an atmospheric general circulation model with and without ocean coupling are conducted. The coupled simulations show no evidence for a La Niña-like cooling in solar maxima. Instead, the tropical sea surface temperature rises almost in phase with the 11-yr solar cycle. A basinwide warming of about 0.1 K is simulated in the tropical Pacific, whereas the warming in the tropical Indian and Atlantic Oceans is weaker. In the western Pacific, the region of deep convection shifts to the east, thus reducing the surface easterlies. This shift is independent of the ocean coupling because deep convection moves to the east in the uncoupled simulations too. The reduced surface easterlies cool the subsurface but warm the surface due to the reduction of heat transport divergence. The latter mechanism operates together with water vapor feedback, resulting in a stronger tropical Pacific warming relative to the warming over the tropical Indian and Atlantic Oceans. These results suggest that the atmospheric response to the 11-yr solar cycle drives the tropical Pacific response, which is amplified by atmosphere-ocean feedbacks operating on decadal time scales. Based on the coupled simulations, it is concluded that the tropical Pacific Ocean should warm when the sun is more active. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52338
Appears in Collections: 气候变化事实与影响
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作者单位: Max Planck Institute for Meteorology, International Max Planck Research School on Earth System Modelling, Hamburg, Germany; Max Planck Institute for Meteorology, Hamburg, Germany
Recommended Citation:
Misios S.,Schmidt H.. Mechanisms Involved in the amplification of the 11-yr solar cycle signal in the tropical pacific ocean[J]. Journal of Climate,2012-01-01,25(14)