History of changes
4What's new in Version 3.1 compared to 3.0...
Overview
Changes in detail:
c00: Bugfix in Km/Kh calculation
There has been a programming error in the calculation of the Km turbulent exchange coefficient (and of the other K's consequently) that has been removed in v3.1.
However, the results obtained by V3.1 differ from those obtained by V3.0.
c01: Review of pollutant dispersion routines
The pollutant dispersion has been re-worked and partyl re-coded. This should fix a number of problems arising due to numerical instability
c02: Review of flow solver (SOR)
The flow solver has been adjusted to increase calculation speed
c03: Changed interpretation of soil humidity IMPORTANT
The relative soil humidity as input value was related to the saturation value of the soil.
This has been changed. Relative wetness is now related to the field capactiy.
c04: Improved Batch-Manager
The interface for starting a batch job has been extended with a preview and the option to cancel the run.
c06: New options for telescoping grids
V3.1 allows you to define a z-level where the telecoping starts (see here)
c07: Saver time steps in spin up phase
During the first 30 min of model simulation time, the smallest available time step will always be used.
c08: Limit in iterations for all energy balance calculations
The maximum amount of allowed iteration cycles for solving the energy balance has been limited to 300 iterations.
This prevents the whole model from hanging in an endless loop if a single surface or leaf energy balance cannot be solved for whatever reason.
c09: SELECT.VAR option removed
The option to select which variables are written into the _ATM_ files has been dropped s they caused too often missing variables and disappointed user.
c10: [POSITION| information moved to Area Input file
The position information (location of area in terms of longitude, latitude and reference time zone) has been moved to the Area Input File
c11: Backward compatibilty removed
ENVI-met 3.1 will only accept files that follow the new format specifications. In case of the Area Input Files that means that you need to open your old files in the V3.1 ENVI-met Editor and save them in order to use them with ENVI-met V3.1. In case of the .CF configuration file, all old sections must be removed.
c12: Reorganisation of folders
In order to allow a more flexible project management and a better integration of the different ENVI-met applications, the names and the meaning of folders have been reorganised.
Especially, the global databases for soils, profils and plants have been moved from the \input folder to the \sys.basedata folder for a better separation with the "normal" input files of the model simulations
c13: Small changes in output files variables
Adjustmens to the variables written into the output files, please check the summary of variables of the associated file type.
c14: Improved Sky-view factor calculation
The algorithm has been improoved for a finer resolution of the results.
c15: Improoved flow calculation stability (since BETA 3)
The flow solver algorithm has been reviewed an changed in order to improove performance and stability
c16: Project directory enforced
In oder to further separate the model from the input files, the user must select a project directory during setup. (See MYALIAS.DAT)