Sea surface temperature (SST) variability is an important factor influencing the global climate system. On the earth, the tropics receive the maximum amount of heat. The earth’s heat balance is maintained by the north-south transport of the heat received by means of various processes. This is mostly achieved by modulation of atmospheric circulation patterns. Some of the tropical variability has a distinct influence on the southern high latitudes as well. The imprints of tropical SST variability can be found in sea – ice, high latitude precipitation, air temperature, etc. More often the tropical teleconnections interact with the southern high latitude processes.
Of all the oceans, the Indo – Pacific is the warmest. Among these two oceans the Indian Ocean is warming at a faster rate, a phenomena that has far reaching consequences. Under these circumstances the Indian Ocean processes also undergo changes. Most notably the Indian Ocean Dipole (IOD) has shown more positive polarity in the past two decades. Most of the Indo – Pacific teleconnection to the southern high latitude is strongly felt in West Antarctica, a climatically sensitive region. For example, melting of the West Antarctic ice sheet has the potential to raise the global sea level by 3m. While it is known that tropical Indo - Pacific has perceptible footprint in the southern high latitude, how the recent tropical changes manifest, is ambiguous.
In this presentation we review the major atmospheric patterns of southern high latitudesteleconnection patterns from the Indo-Pacific and the recent changes in them.