Jupiter's stratospheric circulation is still poorly known to this day.Observations of trace species reveal puzzling meridional distributionsleft unexplained by current models coupling chemistry with simpleparametrization of meridional and vertical transport. We aim atdeveloping a 3D General Circulation Model (GCM) from the troposphere tothe upper stratosphere to address these questions. In this context, thecalculation of heating and cooling rates has to be robust and fast, asthese quantities need to be computed on a high-resolution grid, everyfew Jupiter days and for several Jupiter years. This abstract focuses onan efficient 1-D radiative-convective model (as part of an under-development 3D GCM). After reviewing the main ingredients of our 1-Dmodel, we present the thermal structure obtained at equilibrium andcompare it to temperatures derived from thermal infrared spectrometers(Cassini/CIRS and TEXES/IRTF). We then use the net heating rates toestimate the residual-mean circulation, under the assumption that eddyheat flux convergence is negligible compared to diabatic forcing.