DOI: 10.1175/JCLI-D-13-00687.1
Scopus记录号: 2-s2.0-84904467674
论文题名: The impact of the El Niño-Southern oscillation and Atlantic meridional mode on seasonal Atlantic tropical cyclone activity
作者: Patricola C.M. ; Saravanan R. ; Chang P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 14 起始页码: 5311
结束页码: 5328
语种: 英语
Scopus关键词: Atmospheric humidity
; Atmospheric pressure
; Climate change
; Hurricanes
; Nickel
; Storms
; Tropics
; Atlantic Ocean
; Atmosphere-ocean interactions
; ENSO
; Extreme events
; Tropical cyclone
; Oceanography
; air-sea interaction
; annual variation
; atmosphere-ocean system
; boundary condition
; climate modeling
; El Nino-Southern Oscillation
; extreme event
; numerical model
; regional climate
; sea surface temperature
; tropical cyclone
; Atlantic Ocean
英文摘要: Atlantic tropical cyclone (TC) activity is influenced by interannual tropical Pacific sea surface temperature (SST) variability characterized by the El Ni~no-Southern Oscillation (ENSO), as well as interannual-todecadal variability in the interhemispheric gradient in tropical Atlantic SST characterized by the Atlantic meridional mode (AMM). Individually, the negativeAMMphase (cool northern and warm southern tropical Atlantic SST anomalies) and El Ni~no each inhibit Atlantic TCs, and vice versa. The impact of concurrent strong phases of theENSOandAMMon AtlanticTC activity is investigated. The response of the atmospheric environment relevant for TCs is evaluated with a genesis potential index. Composites of observed accumulated cyclone energy (ACE) suggest that ENSO andAMMcan amplify or dampen the influence of one another on Atlantic TCs. To support the observational analysis, numerical simulations are performed using a 27-km resolution regional climate model. The control simulation uses observed SST and lateral boundary conditions (LBCs) of 1980-2000, and perturbed experiments are forced with ENSO phases through LBCs and eastern tropical Pacific SST and AMM phases through Atlantic SST. Simultaneous strong El Ni~no and strongly positive AMM, as well as strong concurrent La Ni~na and negative AMM, produce near-average Atlantic ACE suggesting compensation between the two influences, consistent with the observational analysis. Strong LaNi~na and strongly positiveAMMtogether produce extremely intense Atlantic TC activity, supported largely by above average midtropospheric humidity, while strong El Ni~no and negativeAMMtogether are not necessary conditions for significantly reduced Atlantic tropical cyclone activity. © 2014 American Meteorological Society. 资助项目: NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51076
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, Texas A and M University, College Station, TX, United States; Department of Oceanography and Atmospheric Sciences, Texas A and M University, College Station, TX, United States; Physical Oceanography Laboratory, Qingdao Collaborative Innovation Center of Marine Science and Technology, Ocean University of China, Qingdao, China
Recommended Citation:
Patricola C.M.,Saravanan R.,Chang P.. The impact of the El Niño-Southern oscillation and Atlantic meridional mode on seasonal Atlantic tropical cyclone activity[J]. Journal of Climate,2014-01-01,27(14)