Woods Hole Oceanographic Institution

Jason C. Goodman

»Europa 2006
»Enceladus 2006
»Annular Modes 2006
»Snowball Earth 2006
»Europa 2004
»Snowball Earth 2004
»Climate Variability 2003
»Climate Variability 2002
»Climate Variability 1999

Goodman, J. C. and J. Marshall, A model of decadal middle-latitude atmosphere?ocean coupled modes, Journal of Climate, 1999

An analytical model of the mutual interaction of the middle-latitude atmosphere and ocean is formulated and studied. The model is found to support coupled modes in which oceanic baroclinic Rossby waves of decadal period grow through positive coupled feedback between the thermal forcing of the atmosphere induced by SST anomalies and the resulting wind stress forcing of the ocean. Growth only occurs if the atmospheric response to thermal forcing is equivalent barotropic, with a particular phase relationship with the underlying SST anomalies. The dependence of the growth rate and structure of the modes on the nature of the assumed physics of air?sea interaction is explored, and their possible relation to obser ved phenomena discussed.

FILE » Climate Variability 1999

© Woods Hole Oceanographic Institution
All rights reserved