Changeset 730

Timestamp:

Jul 18, 2012, 11:10:04 AM (12 years ago)

Author:

jleconte

Message:

• Updated README
• Corrected gray gas mode. The use of kappa_VI or kappa_IR far a given band is now based on its wavenumber independently of

SW and LW calculations

File:

• trunk/LMDZ.GENERIC/README (modified) (1 diff)

trunk/LMDZ.GENERIC/README

@@ -705 +705 @@
 - To add other aerosols, see Laura Kerber.
 
+== 18/07/2012 == JL
+- New water cycle scheme:
+   - largescale now in F90. Robustness increased by i) including evap inside largescale ii) computing the 
+        condensed water amount iteratively
+   - same improvements in moistadj.
+   - Water thermodynamical data and saturation curves centralized in module watercommn_h
+       - The saturation curves used are now Tetens formula as they are analyticaly inversible (Ts(P)-> Ps(T)).
+          New saturation curve yields very good agreement with the former one.
+       - Saturation curves are now generalized for arbitrary water amount (not just q<<1)
+       - The old watersat should be removed soon.
+   - The effect of water vapor on total (surface) pressure can be taken into account by setting 
+      mass_redistrib=.true. in callphys.def (routine mass_redistribution inspired from co2_condense in martian
+      model but with a different scheme as many routines evaporate/condense water vapor).
+- New cloud and precipitation scheme (JL + BC):
+   - The default recovery assumption for computing the total cloud fraction has been changed (total random gave too
+      large cloud fractions). See totalcloudfrac.F90 for details and to change this.
+   - Totalcloudfraction now set the total cloud fraction to the fraction of the
+      optically thickest cloud and totalcloudfrac is thus called in aeropacity.
+   - Only the total cloud fraction is used to compute optical depth in aeropacity (no more effective 
+      optical depth with exponential formula).
+   - 4 precipitation schemes are now available (see rain.F90 for details). The choice can be made using precip_scheme
+      in callphys.def. Usage of the more physically based model of Boucher et al 95 (precip_scheme=4) is recommended.
+      default behavior is set to the former "simple scheme" (precip_scheme=1).
+   - See rain.f90 to determine the parameter to be defined in callphys.def as a function of the precipitation scheme used.
+- Physiq.F90 now written in a matricial (more F90) way.
+- Radii (H2O and CO2 cloud particles, aerosols, duts, ...) calculations now centralized in module radii_mod.F90 
+   and work with the new aerosol scheme implemented by Laura K. Some inconsistency may remain in callsedim.
+- Corrected gray gas mode. The use of kappa_VI or kappa_IR far a given band is now based on its wavenumber independently of
+   SW and LW calculations 
+   
+Implementation compiled with ifort and pgf90.
+gcm.e runs in Earth and Early Mars case with CO2 and H2O cycle + dust. 
+