RELEASE_NOTES   30 September 2004


The changes and new features of this release are:

1)  Aerosols
    + added a computationally efficient coagulation routine
    + improved the efficiency of the SOA solver
    + updated ISORROPIA for stability at low relative humidity
    + added in-line documentation
    + adjusted molecular weights of inorganic species for consistency with
      mechanism files
    + changed the output variables in the aerosol diagnostic file
    + removed SOA from the definition of "dry" aerosol
    + modified SOA condensation such that it doesn't affect geometric standard
      deviation
    + added a new subroutine, HCOND3, to calculate condensational-growth factors
    + merged former subroutines AEROPROC and AEROSTEP into a single routine
    + removed include file AEROSTUFF.EXT (no longer needed)
    + removed modules AERO2 and AERO_DEPV1 (no longer supported)

2)  Chemistry
    + added EBI_SAPRC99 solver
    + added Rosenbrock solver
    + correction to HO2 production rate in the EBI_CB4 solver
    + removed QSSA, MEBI_CB4, and MEBI_SAPRC99 solvers (no longer supported)

3)  Process Analysis
    + corrected the Integrated Process Rate (IPR) calculations for emissions
      & dry deposition for aerosols

4)  Clouds
    + added the capability for "graupel" in the resolved cloud model
    + corrected the molecular weights for organic aerosols

5)  Vertical Diffusion
    + changed deposition velocity from flux form (rho*Vd) to velocity form
    + revised RDDEPV to be more general for the non-reactive species
    + initialized the INDX10 variable in AERO_EMIS.F

6) Advection
    + bug fix in the VPPM and HPPM advection module
    + removed VBOT and HBOT (not supported in this release, may be re-released
      in the future)

7) PinG and PDM
    + added capability for aerosols
    + dropped PING_MEBI_CB4 and PING_QSSA modules (no longer supported)

8) Parallel I/O
    + incorporated speed-ups suggested by Sandia National Lab.

9) Initial and Boundary Conditions
    + Bug fix in ICON
    + updated profiles for ICs & BCs: added species TERP

10) Misc.
    + all no-op routines were updated for the TSTEP used in the layer
      dependent horizontal advection scheme
    + removed library DYNMEM (no longer required)
    + updated mechanism files molecular weights for organic aerosols and terpene
    + revised BLKSIZE parameter in HGRD_DEFN module to enhance computational
      performance for Linux machines with Pentium4 processors
    + corrected variable descriptions in the average concentration file