Changeset 253 for trunk/LMDZ.GENERIC/README

Timestamp:

Aug 2, 2011, 11:13:07 AM (13 years ago)

Author:

emillour

Message:

Generic GCM

• Massive update to version 0.7

EM+RW

File:

• trunk/LMDZ.GENERIC/README (modified) (2 diffs)

trunk/LMDZ.GENERIC/README

@@ -400 +400 @@
 
 == 31/03/2010 ==
-==> call this version LMDZ.GENERIC.v0.5 
+==> call this version LMDZ.GENERIC.v0.5
 -- OLR --
    The .nc functions were implemented and tested. It was necessary to add
@@ -441 +441 @@
    major change, but there are enough cases where it will be useful to
    make it worthwhile in the universal code. I have done the same with rcp.
+
+== 10/10/2010 ==
+==> call this version LMDZ.GENERIC.v0.6
+-- startup --
+   We now check water tracers exist in newstart.F before all watery initialisation options.
+   Added an option 'autozlevs' to run.def (and logic.h). When true this recalculates the scale
+   height in z2sig.def in order to get the same minimum pressure for any resolution.
+   Currently, this is only useful for one-d simulations.
+   Pressure is now distributed better in newstart.F. There was a bug before when the global mean of phi
+   was not equal to zero and the surface pressure was changed with topography still present.
+   In initracer, we no longer automatically set h2o_vap=h2o_ice.   
+
+-- general --
+   periheli, apheli --> periastr, apoastr. Note this necessitates a change in start_planet too.
+   testphys1d.F --> rcm1d.F
+   physiq.F, callcorrk.F upgraded to Fortran 90 to remove evil zerophys.
+   I cleaned up the method of displaying energy balance and temperature range in the model a bit.
+   Pure H2 atmospheres are now permitted, although the code is _untested_. Rayleigh scattering,
+   specific heat capacities and molar masses are varied, and the H2-H2 collision-induced data 
+   of Grushka et al. is used for the radiative transfer.
+
+-- boundary layer --
+   An improved version of vdifc.F has been created that includes the latent heat effect of water vapor,
+   following the method used in 'clmain' in the LMDZ terrestrial model.
+
+-- water cycle --
+   Benjamin's improvements have been added, namely the hydrology, and reevaporation.
+   Variable cloud fractions are allowed, or a global fixed value may be chosen
+   for use in aeropacity. Surface wetness (beta) is now calculated in a simple way, and
+   outputed as a diagnostic, along with the atmospheric relative humidity.
+  
+   mol/mol to kg/kg bug in callcorrk corrected.
+
+-- radiative transfer --
+   A major bug in gfluxv.F was corrected. It involved BSURF, the radiation reflected upwards from 
+   the ground.
+   In aeropacity, we now set the cloud opacity in the top layer of the atmosphere to zero. This solves
+   an instability problem that was occurring when CO2 clouds formed.
+   Dust is back! Only fixed profiles allowed for now. It is assigned "naerkind=3" in aeropacity.F90.
+   If 'CLFvarying' is enabled, the corrk subroutine is now called twice per timestep - once for clear
+   skies and once for cloudy. This slows things down but is effective for Earth-like simulations.
+   An optional Newtonian cooling scheme has been implemented that can replace the correlated-k method
+   for dynamical tests etc. It is pretty experimental and has not been extensively tested.
+
+-- Dynamics --
+   callgroupeun in gcm.F has been set to FALSE, as it does not conserve tracers.
+   The coefficient facup has been set to 1 in inidissip.F. We may need to mess
+   with this later if it makes the model too unstable.
+
+== 1/08/2011 ==
+==> call this version LMDZ.GENERIC.v0.7
+
+   Main change: a new file 'gases.def' now required at startup. This tells us which gases are in
+   the planet's atmosphere. It is used to calculate fundamental quantities like cpp and mugaz.
+   A check is made against the radiative transfer data to make sure they correspond.
+
+   Code has been tested successfully using the 'gfortran compiler'.
+
+-- startup --
+   a bug involving tsoil interpolation in lect_start_archive.F was corrected.   
+
+-- aerosols --
+   gauss integration number 5-->10 in aeroptproperties.F90
+
+-- water cycle --
+   Big fat bug in rain.F90 corrected. The routine internally updated the temperature 
+   with new tendencies before it was supposed to happen!
+   Bug in oborealis where phi not properly updated was corrected.
+   Improvements to hydrol.F90: zdtsurf_hyd --> pdtsurf_hyd
+   A 'sourceevol' option was added (accessed in callphys.def) that allows us to track the
+   evolution of the surface distribution over time.
+   Another bug in rain corrected involving evaporation - it was heating the atmosphere
+   rather than cooling it...
+
+-- convection --
+   I found a bug in convadj.F that breaks tracer conservation when convection stops at one layer 
+   and immediately restarts in the next one.
+
+-- diagnostics --
+   Some bugs corrected in the computation of 3D averages for the H2O / energy conservation 
+   diagnostics.
+
+-- radiative transfer --
+   A bug involving continuum opacities (variable DCONT) was corrected in optci.F90 and optcv.F0.
+   H2-H2 warming now in theory reliable and correct (60-1000 K).
+   A bug involving the definition of the Planck function boundaries was corrected in sfluxi.F90
+   and gfluxi.F.