Index: trunk/LMDZ.MARS/libf/phymars/initracer.F
===================================================================
--- trunk/LMDZ.MARS/libf/phymars/initracer.F	(revision 321)
+++ trunk/LMDZ.MARS/libf/phymars/initracer.F	(revision 324)
@@ -342,4 +342,9 @@
           count=count+1
         endif
+        if (noms(iq).eq."ch4") then
+          igcm_ch4=iq
+          mmol(igcm_ch4)=16.
+          count=count+1
+        endif
         if (noms(iq).eq."ar") then
           igcm_ar=iq
@@ -347,5 +352,5 @@
           count=count+1
         endif
-	if (noms(iq).eq."n") then
+        if (noms(iq).eq."n") then
           igcm_n=iq
           mmol(igcm_n)=14.
@@ -402,5 +407,5 @@
           count=count+1
         endif
-	if (noms(iq).eq."n2plus") then
+        if (noms(iq).eq."n2plus") then
           igcm_n2plus=iq
           mmol(igcm_n2plus)=28.
@@ -433,5 +438,5 @@
           count=count+1
         endif
-	
+
 
       enddo ! of do iq=1,nqmx
Index: trunk/LMDZ.MARS/libf/phymars/tracer.h
===================================================================
--- trunk/LMDZ.MARS/libf/phymars/tracer.h	(revision 321)
+++ trunk/LMDZ.MARS/libf/phymars/tracer.h	(revision 324)
@@ -50,4 +50,5 @@
       integer :: igcm_no2
       integer :: igcm_n2d
+      integer :: igcm_ch4
       ! Ions
       integer :: igcm_co2plus
@@ -74,4 +75,5 @@
      & igcm_o2,igcm_o3,igcm_h,igcm_h2,igcm_oh,igcm_ho2,igcm_h2o2,       &
      & igcm_n2,igcm_ar,igcm_n,igcm_no,igcm_no2,igcm_n2d,                &
+     & igcm_ch4,                                                        &
      & igcm_co2plus,igcm_oplus,igcm_o2plus,igcm_coplus,igcm_cplus,      &
      & igcm_nplus,igcm_noplus,igcm_n2plus,igcm_hplus,igcm_elec,         &