Index: trunk/LMDZ.MARS/README
===================================================================
--- trunk/LMDZ.MARS/README	(revision 2829)
+++ trunk/LMDZ.MARS/README	(revision 2830)
@@ -3809,2 +3809,19 @@
 == 23/11/2022 == RV
 Cleaning of phyredem0. Argument passed to the subroutines were unused.
+
+== 23/11/2022 == AB
+The program util/aeroptical.F90 can now compute column-integrated optical depths
+of the aerosols, in addition to the opacity profiles. The user has to specify it
+('yes' or 'no') in aeroptical.def
+Detailed changes :
+ - update of the aeroptical.def file to ask the user if the column optical depth 
+   should be computed (non-retrocompatible change)
+ - add in the init2 subroutine a computation of the layers' height delta_z, with 
+   adaptable method depending on the availability of some variables in the input file
+   and on wether or not the input file has been zrecasted before. Preliminary validation
+   shows that these different methods yield a +/-3% error on the output column optical
+   depth tau_[aer]. The delta_z variable is also written in the output file.
+ - add a log file for warnings in the interpolation subroutine in aeropt_mod.F90
+   + add some comments in the code
+ - add the ouput "zzlev" (= interlayer altitudes) in libf/phymars/physiq_mod.F
+   so that it can be directly used by aeroptical.F90 to compute delta_z