Decadal changes in the relationship between the Indian and Australian summer monsoons

Karumuri Ashok; C. Nagaraju; A. Sen Gupta; D. S. Pai

doi:10.1007/s00382-012-1625-4

Decadal changes in the relationship between the Indian and Australian summer monsoons

Karumuri Ashok, C. Nagaraju, A. Sen Gupta, D. S. Pai

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

In this study, we investigate a long-term modulation in the relationship between Indian summer monsoon rainfall with the subsequent Australian summer monsoon rainfall. The two monsoon rainfall time series are significantly correlated at 0.3 at the 99 % confidence level. However, the relationship weakens during the 1932-1966 period, with the inter-monsoon correlation for the period falling below statistical significance. We find that this modulation is consistent with a breakdown of the typical El Niño-Southern Oscillation (ENSO) influence on sea surface temperature in the northern region of Australia, during this period. In addition, a change in the relative influences of ENSO and Indian Ocean Basin-wide Warming sea surface temperature anomalies on the Australian summer monsoon rainfall is also apparent across different time periods. © 2012 Springer-Verlag Berlin Heidelberg.

Original language	English (US)
Pages (from-to)	1043-1052
Number of pages	10
Journal	Climate Dynamics
Volume	42
Issue number	3-4
DOIs	https://doi.org/10.1007/s00382-012-1625-4
State	Published - Feb 1 2014
Externally published	Yes

ASJC Scopus subject areas

Atmospheric Science

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10.1007/s00382-012-1625-4

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abstract = "In this study, we investigate a long-term modulation in the relationship between Indian summer monsoon rainfall with the subsequent Australian summer monsoon rainfall. The two monsoon rainfall time series are significantly correlated at 0.3 at the 99 % confidence level. However, the relationship weakens during the 1932-1966 period, with the inter-monsoon correlation for the period falling below statistical significance. We find that this modulation is consistent with a breakdown of the typical El Ni{\~n}o-Southern Oscillation (ENSO) influence on sea surface temperature in the northern region of Australia, during this period. In addition, a change in the relative influences of ENSO and Indian Ocean Basin-wide Warming sea surface temperature anomalies on the Australian summer monsoon rainfall is also apparent across different time periods. {\textcopyright} 2012 Springer-Verlag Berlin Heidelberg.",

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AU - Ashok, Karumuri

AU - Nagaraju, C.

AU - Gupta, A. Sen

AU - Pai, D. S.

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AB - In this study, we investigate a long-term modulation in the relationship between Indian summer monsoon rainfall with the subsequent Australian summer monsoon rainfall. The two monsoon rainfall time series are significantly correlated at 0.3 at the 99 % confidence level. However, the relationship weakens during the 1932-1966 period, with the inter-monsoon correlation for the period falling below statistical significance. We find that this modulation is consistent with a breakdown of the typical El Niño-Southern Oscillation (ENSO) influence on sea surface temperature in the northern region of Australia, during this period. In addition, a change in the relative influences of ENSO and Indian Ocean Basin-wide Warming sea surface temperature anomalies on the Australian summer monsoon rainfall is also apparent across different time periods. © 2012 Springer-Verlag Berlin Heidelberg.

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Decadal changes in the relationship between the Indian and Australian summer monsoons

Abstract

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