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Relationship between tropical Pacific and Indian Ocean sea surface temperature and monthly precipitation over the central highland, Vietnam

Nguyen, Tinh Dang; Bertacchi Uvo, Cintia LU and Rosbjerg, Dan (2007) In International Journal of Climatology 27(11). p.1439-1454
Abstract
The relationship between monthly sea-surface temperature (SST) in the tropical Pacific and the Indian Ocean and monthly precipitation over the Vietnamese central highlands (VCH) has been investigated by means of singular value decomposition. The seasonal variation of SST plays a critical role in the onset of the monsoon season and convective rain band movement in the inter-tropical convergence zone.

The relationships between precipitation and SST in both oceans vary significantly through the rainy season. In April, ENSO is strongly correlated with precipitation over the VCH, while the Indian Ocean SST only shows a significant correlation with precipitation in the northern VCH. In May, there is no significant relationship between... (More)
The relationship between monthly sea-surface temperature (SST) in the tropical Pacific and the Indian Ocean and monthly precipitation over the Vietnamese central highlands (VCH) has been investigated by means of singular value decomposition. The seasonal variation of SST plays a critical role in the onset of the monsoon season and convective rain band movement in the inter-tropical convergence zone.

The relationships between precipitation and SST in both oceans vary significantly through the rainy season. In April, ENSO is strongly correlated with precipitation over the VCH, while the Indian Ocean SST only shows a significant correlation with precipitation in the northern VCH. In May, there is no significant relationship between precipitation and SST in either of the oceans. In June, precipitation over the VCH is negatively correlated with the northern Indian Ocean and the southern Pacific SST. Through July to September, no significant relationships were found between the Indian Ocean SST and precipitation patterns. The equatorial central to the eastern Pacific SST, in turn, is positively correlated with precipitation in a small area from the north to the south of the VCH. In October, precipitation over the VCH is strongly related to ENSO and positively correlated with the equatorial eastern Indian Ocean SST. For November, the north-western Pacific as well as the equatorial eastern Indian Ocean SST is positively and strongly correlated with precipitation over the VCH.

Lag-time analyses demonstrate a potential link between the Pacific SST and monthly precipitation patterns through the rainy season from one to three months in advance, and between the Indian Ocean SST and monthly precipitation patterns in October and November from one to two months in advance. The analysed results provide a strong basis for a predictive scheme, but further analysis of skill levels needs to be developed. Copyright © 2007 Royal Meteorological Society (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sea-surface temperature, ENSO, singular value decomposition, South Asian summer monsoon, precipitation
in
International Journal of Climatology
volume
27
issue
11
pages
1439 - 1454
publisher
John Wiley & Sons
external identifiers
  • wos:000249728900003
  • scopus:34548597146
ISSN
1097-0088
DOI
10.1002/joc.1486
language
English
LU publication?
yes
id
3e964401-ded0-4599-bc34-72dfd6a0deca (old id 742361)
date added to LUP
2007-12-12 11:27:57
date last changed
2017-09-10 03:40:35
@article{3e964401-ded0-4599-bc34-72dfd6a0deca,
  abstract     = {The relationship between monthly sea-surface temperature (SST) in the tropical Pacific and the Indian Ocean and monthly precipitation over the Vietnamese central highlands (VCH) has been investigated by means of singular value decomposition. The seasonal variation of SST plays a critical role in the onset of the monsoon season and convective rain band movement in the inter-tropical convergence zone.<br/><br>
The relationships between precipitation and SST in both oceans vary significantly through the rainy season. In April, ENSO is strongly correlated with precipitation over the VCH, while the Indian Ocean SST only shows a significant correlation with precipitation in the northern VCH. In May, there is no significant relationship between precipitation and SST in either of the oceans. In June, precipitation over the VCH is negatively correlated with the northern Indian Ocean and the southern Pacific SST. Through July to September, no significant relationships were found between the Indian Ocean SST and precipitation patterns. The equatorial central to the eastern Pacific SST, in turn, is positively correlated with precipitation in a small area from the north to the south of the VCH. In October, precipitation over the VCH is strongly related to ENSO and positively correlated with the equatorial eastern Indian Ocean SST. For November, the north-western Pacific as well as the equatorial eastern Indian Ocean SST is positively and strongly correlated with precipitation over the VCH.<br/><br>
Lag-time analyses demonstrate a potential link between the Pacific SST and monthly precipitation patterns through the rainy season from one to three months in advance, and between the Indian Ocean SST and monthly precipitation patterns in October and November from one to two months in advance. The analysed results provide a strong basis for a predictive scheme, but further analysis of skill levels needs to be developed. Copyright © 2007 Royal Meteorological Society},
  author       = {Nguyen, Tinh Dang and Bertacchi Uvo, Cintia and Rosbjerg, Dan},
  issn         = {1097-0088},
  keyword      = {sea-surface temperature,ENSO,singular value decomposition,South Asian summer monsoon,precipitation},
  language     = {eng},
  number       = {11},
  pages        = {1439--1454},
  publisher    = {John Wiley & Sons},
  series       = {International Journal of Climatology},
  title        = {Relationship between tropical Pacific and Indian Ocean sea surface temperature and monthly precipitation over the central highland, Vietnam},
  url          = {http://dx.doi.org/10.1002/joc.1486},
  volume       = {27},
  year         = {2007},
}