contributor author | Gouirand, Isabelle | |
contributor author | Jury, Mark R. | |
contributor author | Sing, Bernd | |
date accessioned | 2017-06-09T17:04:30Z | |
date available | 2017-06-09T17:04:30Z | |
date copyright | 2012/06/01 | |
date issued | 2012 | |
identifier issn | 0894-8755 | |
identifier other | ams-78997.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4221727 | |
description abstract | his 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. | |
publisher | American Meteorological Society | |
title | An Analysis of Low- and High-Frequency Summer Climate Variability around the Caribbean Antilles | |
type | Journal Paper | |
journal volume | 25 | |
journal issue | 11 | |
journal title | Journal of Climate | |
identifier doi | 10.1175/JCLI-D-11-00269.1 | |
journal fristpage | 3942 | |
journal lastpage | 3952 | |
tree | Journal of Climate:;2012:;volume( 025 ):;issue: 011 | |
contenttype | Fulltext | |