Years of Record: 1957/01 to 2015/09
The station-based index of the Southern Annular Mode (SAM) is based on the zonal pressure difference between the latitudes of 40S and 65S. As such, the SAM index measures a "see-saw" of atmospheric mass between the middle and high latitudes of the Southern Hemisphere. Positive values of...
Main variables and Earth System components:
Formats: ascii
Domain: Antarctic, SH - Southern Hemisphere, Southern Ocean
See Expert Guidance by Marshall, Gareth
Years of Record: 1979/12 to 2016/12
The dynamics of the Southern Hemisphere westerly jet are described in terms of two indices, jet strength and jet latitude. Here, these indices are defined using the ERA-Interim reanalysis, although other datasets, including climate models, could be used. Although closely linked with the...
Main variables and Earth System components:
Formats: ascii
Timestep: Seasonal,Annual
Domain: Antarctic, SH - Southern Hemisphere, Southern Ocean
See Expert Guidance by Bracegirdle, Thomas J.
