Impact of the Indian Ocean dipole on the relationship between the Indian monsoon rainfall and ENSO
β Scribed by Ashok, Karumuri; Guan, Zhaoyong; Yamagata, Toshio
- Book ID
- 118663165
- Publisher
- American Geophysical Union
- Year
- 2001
- Tongue
- English
- Weight
- 669 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1944-8007
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## Abstract The current paper is an observational study that investigates the October to December (OND) rainfall variability over the east Southern African Development Community (SADC) mainland region in relation to El NiΓ±oβSouthern Oscillation (ENSO) and the Indian Ocean dipole zonal mode (IODZM)
Characterizing every year during the 120 year interval 1871 -1990 as a year of El Nin Λo (EN), or Southern Oscillation minimum (SO), or equatorial eastern Pacific sea-surface temperature (SST) warm (W) or cold (C) episode or none (non-events), the corresponding summer monsoon rainfall departures for
Canonical correlation analysis is used to examine the seasonal relationship between ENSO and Indian rainfall by analysing their 12 monthly values for an 80-year period. Three ENSO indices are considered. These ENSO indices are the Darwin surface pressure, the sea-surface temperature of the central a