A dipole mode in the tropical Indian Ocean
@article{Saji1999ADM, title={A dipole mode in the tropical Indian Ocean}, author={N. H. Saji and B. N. Goswami and Puthenveettil Narayana Menon Vinayachandran and Toshio Yamagata}, journal={Nature}, year={1999}, volume={401}, pages={360-363} }
For the tropical Pacific and Atlantic oceans, internal modes of variability that lead to climatic oscillations have been recognized, but in the Indian Ocean region a similar ocean–atmosphere interaction causing interannual climate variability has not yet been found. Here we report an analysis of observational data over the past 40 years, showing a dipole mode in the Indian Ocean: a pattern of internal variability with anomalously low sea surface temperatures off Sumatra and high sea surface…
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References
SHOWING 1-10 OF 60 REFERENCES
Interannual displacements of convection and surface circulation over the equatorial Indian Ocean
- Environmental Science
- 1986
The interannual variability of surface observations in the equatorial Indian Ocean is investigated from 23 years of ship reports (1954-1976). In October and November, during certain years, the…
Importance of the Indian Ocean for simulating rainfall anomalies over eastern and southern Africa
- Environmental Science
- 1999
The relative contributions of the Indian Ocean and Pacific Ocean sea surface temperatures (SSTs) to the rainfall variability over eastern central, and southern Africa during the austral spring-summer…
Response of the equatorial Indian Ocean to an unusual wind event during 1994
- Environmental Science
- 1999
Unusual westward wind anomalies were observed in the Indian Ocean during 1994. The response of the ocean to these anomalies is studied using an ocean general circulation model forced with interannual…
Atmospheric-hydrospheric mechanisms of climate anomalies in the western equatorial Indian Ocean
- Environmental Science
- 1993
Atmosphere-ocean mechanisms of rainfall anomalies at the coast of eastern Africa are studied using long-term ship observations in the Indian Ocean, surface current measurements, subsurface casts,…
Mechanisms for the Indian Ocean warming during the 1997–98 El Niño
- Environmental Science
- 1999
This study examines primary mechanisms that gave rise to the basin‐wide variations of the sea surface temperature (SST) in the Indian Ocean during the 1997–98 El Niño by using multi‐source data sets.…
Seasonal variations in the equatorial Indian Ocean and their impact on the Lombok throughflow
- Environmental Science
- 1996
In order to identify the origin of the nonequilibrated pressure field which introduces semiannual variations to the Lombok throughflow, one of the major components of the Indonesian throughflow,…
On the structure and evolution of ENSO‐related climate variability in the tropical Pacific: Lessons from TOGA
- Environmental Science
- 1998
Improved observations in the tropical Pacific during the Tropical Ocean-Global Atmosphere (TOGA) program have served to corroborate preexisting notions concerning the seasonally dependent…
AN ANALYSIS OF THE ENSO SIGNAL IN THE TROPICAL ATLANTIC AND WESTERN INDIAN OCEANS
- Environmental Science
- 1997
This article examines the time-space evolution of the El Nino-Southern Oscillation (ENSO) signal in the tropical Atlantic and western Indian Oceans, using harmonic analysis. Composites of sea-surface…
Observations and dynamics of semiannual and annual sea levels near the eastern equatorial Indian Ocean boundary
- Environmental Science, Geography
- 1993
Abstract Monthly sea level records from the western coasts of Thailand and Indonesia are examined together with atmospheric pressure, wind data, and a linear model to document and understand eastern…
The South Asian Monsoon and the Tropospheric Biennial Oscillation
- Environmental Science
- 1997
A mechanism is described that involves the south Asian monsoon as an active part of the tropospheric biennial oscillation (TBO) described in previous studies. This mechanism depends on coupled…