J-M, The routine sflset() appears in both phy_suflux.F and phy_suflux_prep.F and so the model won't compile any aim expts. A. -- Dr Alistair Adcroft http://www.mit.edu/~adcroft MIT Climate Modeling Initiative tel: (617) 253-5938 EAPS 54-1523, 77 Massachusetts Ave, Cambridge, MA, USA