Index: /LMDZ6/trunk/libf/phylmd/StratAer/traccoag_mod.F90
===================================================================
--- /LMDZ6/trunk/libf/phylmd/StratAer/traccoag_mod.F90	(revision 3113)
+++ /LMDZ6/trunk/libf/phylmd/StratAer/traccoag_mod.F90	(revision 3114)
@@ -203,6 +203,6 @@
             !vertically distributed emission
             DO k=1, klev
-              ! stretch emission over one day of Pinatubo eruption
-              emission=m_aer_emiss_vol*(mSO2mol/mSatom)/m_air_gridbox(i,k)*f_lay_emiss(k)/1./86400. 
+              ! stretch emission over one day (minus one timestep) of Pinatubo eruption
+              emission=m_aer_emiss_vol*(mSO2mol/mSatom)/m_air_gridbox(i,k)*f_lay_emiss(k)/1./(86400.-pdtphys)
               tr_seri(i,k,id_SO2_strat)=tr_seri(i,k,id_SO2_strat)+emission*pdtphys 
               budg_emi_so2(i)=budg_emi_so2(i)+emission*zdm(k)*mSatom/mSO2mol