Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere

Dipole phenomena in ocean-atmospheric variability such as the Indian Ocean Dipole have been recognized as important factors that greatly affect local climates. This study presents evidence of two dipole modes in sea surface temperature anomaly (SSTA) over high latitude Southern Hemisphere (one in So...

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Autores principales:	Jeseung Oh, Yong Jung
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate synchronization dipole oscillation ocean–atmosphere teleconnection sst (sea surface temperature) variation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/0d50d065f5bd46a591f94271c86e75c3
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spelling	oai:doaj.org-article:0d50d065f5bd46a591f94271c86e75c32021-11-05T18:30:47ZLocal climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere2040-22442408-935410.2166/wcc.2020.113https://doaj.org/article/0d50d065f5bd46a591f94271c86e75c32021-03-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/2/311https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Dipole phenomena in ocean-atmospheric variability such as the Indian Ocean Dipole have been recognized as important factors that greatly affect local climates. This study presents evidence of two dipole modes in sea surface temperature anomaly (SSTA) over high latitude Southern Hemisphere (one in South Pacific and one in South Indian Ocean), identified using empirical orthogonal functions and cross-correlation analysis. These dipole modes have interannual periodicity, which is also explored for their seasonal variability and modes. Herein, a dipole mode is defined as a quasi-periodic oscillation between positive and negative phases in the various climate proxies, though predominantly in SST, which is supported by the signal's synchronized relationship with atmospheric variability (as recorded by pressure and wind records). In addition, the dipole modes have a clear synchronization relationship to local precipitation records, which is described in this paper. For this purpose, an index to represent the time-dependent evolution of each dipole mode and to better define and understand the teleconnections of the dipole modes with other climate variables was defined. The findings described here provide a more precise and unique understanding of the globally distributed SSTA teleconnections and climate's synchronized dynamics than that has currently been studied.Jeseung OhYong JungIWA Publishingarticleclimate synchronizationdipole oscillationocean–atmosphere teleconnectionsst (sea surface temperature) variationEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 2, Pp 311-324 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate synchronization dipole oscillation ocean–atmosphere teleconnection sst (sea surface temperature) variation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate synchronization dipole oscillation ocean–atmosphere teleconnection sst (sea surface temperature) variation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Jeseung Oh Yong Jung Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
description	Dipole phenomena in ocean-atmospheric variability such as the Indian Ocean Dipole have been recognized as important factors that greatly affect local climates. This study presents evidence of two dipole modes in sea surface temperature anomaly (SSTA) over high latitude Southern Hemisphere (one in South Pacific and one in South Indian Ocean), identified using empirical orthogonal functions and cross-correlation analysis. These dipole modes have interannual periodicity, which is also explored for their seasonal variability and modes. Herein, a dipole mode is defined as a quasi-periodic oscillation between positive and negative phases in the various climate proxies, though predominantly in SST, which is supported by the signal's synchronized relationship with atmospheric variability (as recorded by pressure and wind records). In addition, the dipole modes have a clear synchronization relationship to local precipitation records, which is described in this paper. For this purpose, an index to represent the time-dependent evolution of each dipole mode and to better define and understand the teleconnections of the dipole modes with other climate variables was defined. The findings described here provide a more precise and unique understanding of the globally distributed SSTA teleconnections and climate's synchronized dynamics than that has currently been studied.
format	article
author	Jeseung Oh Yong Jung
author_facet	Jeseung Oh Yong Jung
author_sort	Jeseung Oh
title	Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
title_short	Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
title_full	Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
title_fullStr	Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
title_full_unstemmed	Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere
title_sort	local climate impacts of dipole-like sea surface temperature oscillations in the southern hemisphere
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/0d50d065f5bd46a591f94271c86e75c3
work_keys_str_mv	AT jeseungoh localclimateimpactsofdipolelikeseasurfacetemperatureoscillationsinthesouthernhemisphere AT yongjung localclimateimpactsofdipolelikeseasurfacetemperatureoscillationsinthesouthernhemisphere
_version_	1718444082386173952

Local climate impacts of dipole-like sea surface temperature oscillations in the Southern Hemisphere

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