DOI: 10.1175/JCLI-D-11-00269.1
Scopus记录号: 2-s2.0-84862726795
论文题名: An analysis of low- and high-frequency summer climate variability around the Caribbean antilles
作者: Gouirand I. ; Jury M.R. ; Sing B.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 11 起始页码: 3942
结束页码: 3952
语种: 英语
Scopus关键词: Atmosphere-ocean interactions
; Climate variability
; ENSO
; HF signals
; High frequency HF
; Low frequency
; Low-pass
; North Atlantic
; North Atlantic oscillations
; North Pacific
; South Atlantic
; Summer climate
; Time-scales
; Atmospheric pressure
; Butterworth filters
; Climatology
; IIR filters
; Rain
; atmosphere-hydrosphere interaction
; climate variation
; El Nino-Southern Oscillation
; North Atlantic Oscillation
; rainfall
; sea surface temperature
; summer
; timescale
; Atlantic Ocean
; Caribbean Sea
英文摘要: This study contrasts the pattern of low-frequency (LF) and high-frequency (HF) climate variability in the eastern Caribbean. A low-pass Butterworth filter is used to study oscillations in rainfall and regional SST on time scales of greater and less than 8 yr in the period 1901-2002. The results show that the southern and northern Antilles are dominated by HF variability, whereas rainfall fluctuations in the eastern Antilles oscillate at quasi-decadal periods over the 102-yr record. In the southern Antilles, the HF rainfall signal derives from a late-summer response to the ENSO phase: warm and dry versus cool and wet. In the northern Antilles, the HF signal relates to a combination of an ENSO and North Atlantic Oscillation (NAO) phase: a warm ENSO and a negative NAO bring wetter conditions, while a cool ENSO and a positive NAO bring drier conditions. The early rainfall LF signal in SST is characterized by a dipole between the North Atlantic and South Atlantic and is associated with cross-equatorial winds that promote convection in the Caribbean. The study analyzes the upper-ocean structure-in particular, a low (high) salinity signal in the tropical North Atlantic (North Pacific) that relates to LF (HF) climate variability. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52381
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Pure and Applied Sciences, University of the West Indies, Cave Hill, Barbados; Department of Physics, University of Puerto Rico, Mayaguez, Puerto Rico; University of Zululand, KwaDlangezwa, South Africa
Recommended Citation:
Gouirand I.,Jury M.R.,Sing B.. An analysis of low- and high-frequency summer climate variability around the Caribbean antilles[J]. Journal of Climate,2012-01-01,25(11)