Articles | Volume 13, issue 4
Ann. Geophys., 13, 419–426, 1995
https://doi.org/10.1007/s00585-995-0419-y
Ann. Geophys., 13, 419–426, 1995
https://doi.org/10.1007/s00585-995-0419-y

  30 Apr 1995

30 Apr 1995

Linear baroclinic instability in the presence of heat inflow from the lower boundary

M. Fantini M. Fantini

Abstract. A linear Eady model with a parameterization of heat influx from the lower boundary is studied analytically in order to obtain the characteristics of baroclinic normal modes modified by this non-adiabatic source. The results display a secondary maximum of growth rate at high wave numbers and a range of absolutely unstable waves, thus suggesting that the property observed among mid-latitude explosive cyclones of being near-stationary in the phase of maximum growth may be captured by this representation of the air-sea energy exchange.