“…This lack has often been dealt with by the use of a 'mass fixer', whereby global mass conservation is restored diagnostically (Priestley, 1993). To avoid this ad hoc procedure, a number of schemes have been proposed that inherently conserve mass (Rancić, 1992(Rancić, , 1995Laprise and Plante, 1995;Leslie and Purser, 1995;Lin and Rood, 1996;Xiao and Yabe, 2001;Nair and Machenhauer, 2002;Nair et al, , 2003Kaas, 2008), including the SLICE scheme (Zerroukat et al, 2002(Zerroukat et al, , 2004(Zerroukat et al, , 2005(Zerroukat et al, , 2006(Zerroukat et al, , 2007. Recently, some of these schemes have been applied in the context of coupled atmospheric equation sets (Lauritzen et al, 2006(Lauritzen et al, , 2008.…”