Tropical Antarctic Teleconnections (TATE) Action Group

TATE

There are very distinct connections between tropical and Antarctic climates, particularly over the South Pacific and South Atlantic with the West Antarctic/Antarctic Peninsula regions, but these are not fully explored. For example, atmospheric wavetrains show spatial and temporal (seasonal, interannual) variations in both regions.

All these variations have important roles on the tropical-Antarctic relationships including, for example, the one between climate and sea ice extent. Coupling of tropical forcing with the SAM also impacts the weather and climate throughout the Southern Hemisphere. For example, extreme weather events in subtropical South America result from interactions between tropical and Antarctic regions.

The Action Group on Tropical Antarctic Teleconnections (TATE AG) is distinct from and complementary to the AntClim21 Scientific Research Programme in that it is concerned with the processes linking the tropics to Antarctica which are not well understood yet are key to the future trajectory of Antarctic climate. AntClim21 is a much broader effort that emphasizes coupled climate modelling for the 21st century.