Analysis of both instrumental and proxy climate records indicates the existence of multi-decadal climate variations (about 40-70 years) over the northern hemisphere. A simple model for the midlatitude ocean-atmosphere coupled system is presented to discuss a possible mechanism for this multi-decadal variation. Slow dynamic adjustments of the ocean due to the Rossby wave coupled with the meridional heat exchange through the thermal advection in the upper layer of the ocean play an important role in inducing this multi-decadal oscillation.
All Science Journal Classification (ASJC) codes
- Atmospheric Science