Surface Pressure and Summer Monsoon Rainfall over India

B. Parthasarathy; K. Rupa Kumar; A. A. Munot

doi:10.1007/BF02656946

Impact Factor: 3.9

Volume 9 Issue 3

Jul. 1992

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1992 > 9(3): 359-366

Surface Pressure and Summer Monsoon Rainfall over India

1.
Indian Institute of Tropical Meteorology, Pune-411008, India,Indian Institute of Tropical Meteorology, Pune-411008, India,Indian Institute of Tropical Meteorology, Pune-411008, India

doi: 10.1007/BF02656946

Abstract
References
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Abstract:
The relationship between the all-India summer monsoon rainfall and surface pressure over the Indian region has been examined to obtain a useful predictor for the monsoon rainfall. The data series of all-India monsoon rainfall and the mean pressures of three seasons before and after the monsoon season as well as the winter-to- spring pressure tendency (MAM-DJF) at 100 stations for the period 1951-1980 have been used in the analysis.The all-India monsoon rainfall is negatively correlated with the pressure of the spring (MAM) season preceding the monsoon and winter-to-spring seasonal difference as pressure tendency (MAM-DJF), at almost all the stations in India, and significantly with the pressures over central and northwestern regions. The average mean sea level pres?sure of six stations (Jodhpur, Ahmedabed, Bombay, Indore, Sagar and Akola) in the Western Central Indian (WCI) region showed highly significant (at 1% level) and consistent CCs of-0.63 for MAM and -0.56 for MAM-DJF for the period 1951-1980. Thus, the pre-monsoon seasonal pressure anomalies over WCI could provide a useful parameter for the long-range forecasting scheme of the Indian monsoon rainfall.
References

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Manuscript History

Manuscript received: 10 July 1992

Manuscript revised: 10 July 1992

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Surface Pressure and Summer Monsoon Rainfall over India

1. Indian Institute of Tropical Meteorology, Pune-411008, India,Indian Institute of Tropical Meteorology, Pune-411008, India,Indian Institute of Tropical Meteorology, Pune-411008, India

Manuscript received: 1992-07-10
Manuscript revised: 1992-07-10

Abstract: The relationship between the all-India summer monsoon rainfall and surface pressure over the Indian region has been examined to obtain a useful predictor for the monsoon rainfall. The data series of all-India monsoon rainfall and the mean pressures of three seasons before and after the monsoon season as well as the winter-to- spring pressure tendency (MAM-DJF) at 100 stations for the period 1951-1980 have been used in the analysis.The all-India monsoon rainfall is negatively correlated with the pressure of the spring (MAM) season preceding the monsoon and winter-to-spring seasonal difference as pressure tendency (MAM-DJF), at almost all the stations in India, and significantly with the pressures over central and northwestern regions. The average mean sea level pres?sure of six stations (Jodhpur, Ahmedabed, Bombay, Indore, Sagar and Akola) in the Western Central Indian (WCI) region showed highly significant (at 1% level) and consistent CCs of-0.63 for MAM and -0.56 for MAM-DJF for the period 1951-1980. Thus, the pre-monsoon seasonal pressure anomalies over WCI could provide a useful parameter for the long-range forecasting scheme of the Indian monsoon rainfall.