ParaMESH Version 1.2

The parameter definitions for MESH 1.3 have been defined based on CLASS and MESH documentation, and private consultation with Dr. E. D. (Ric) Soulis of the University of Waterloo (Ontario, CA), B. Davison of the National Hydrology Research Centre of Environment Canada (Saskatchewan, CA), and D. Verseghy of Environment Canada (Ontario, CA).

Use the integrated application below to review the parameter definitions that have been defined for MESH 1.3 by their associated parameter file.

File: Select a file... MESH_parameters_CLASS.ini MESH_parameters_hydrology.ini MESH_input_run_options.ini MESH_input_soil_levels.txt

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Advanced parameter verification is performed using the bounds and range sets that have been defined for numeric parameters (of "Integer" or "Double" type) for MESH 1.3. These values can viewed by loading the parameter definitions in the "Parameter Definitions" sub-section above.

ParaMESH checks that a parameter value is greater than or equal to the first bound and less than or equal to the last bound in a "Continuous" range set, that a parameter value is equal to any given bound in a "Discontinuous" range set, that a parameter values is less than or equal to the first bound in a "Less Than Or Equal To" range set, and that a parameter value is greater than or equal to the first bound in a "Greater Than Or Equal To" range set. ParaMESH does not check a parameter value when "No Range Set" has been defined.

Extended parameter verification is performed using a set of "Quick Fixes" and "Special Checks" that have been defined for MESH 1.3. Review these definitions below. Note that they refer to parameter ID's, and that a definition associated with a parameter ID can be viewed by loading the parameter definitions in the "Parameter Definitions" sub-section above.

ParaMESH performs the following quick fixes for MESH 1.3:

• Adjust DEGLAT if it is greater than {90}. Subtract {90} if the value is using the {0} to {180} data convention.
• Adjust DEGLON if it is less than {0}. Add {180} if the value is using the {-180} to {180} data convention.
• Change the value of MetStartHour to {0} if MetStartHour is equal to {24}.
• Change the value of GRU to include its default value and order (i.e.: "GRU" and {1}) if the value does not exist.
• Set FARE equal to {1} for compatibility reasons. FARE has been depreciated by modern versions of MESH.
• Ignore erroneous values of SAND that are equal to {-2}, {-3}, or {-4}. These are special SAND flags that are accepted by CLASS.
• Ignore erroneous values of ORGM that are equal to {1}, {2}, or {3}. These are special ORGM flags that are accepted by CLASS.
• Flag all SIM_START(x) and SIM_STOP(x) values to be shown if any SIM_START(x) or SIM_STOP(x) values are erroneous. The user may wish to set all values to {0} to accept MESH defaults or change all values to become representative of their forcing data.

ParaMESH performs the following special checks for MESH 1.3:

• Check that all values of FCAN sum to {1} for a given grouped response unit.
• Check that HourlyStartDay is less than {366} if HourlyStartYear is not a leap-year.
• Check that HourlyStopDay is less than {366} if HourlyStopYear is not a leap-year.
• Check that HourlyStartYear is less than or equal to HourlyStopYear.
• Check that DailyStartDay is less than {366} if DailyStartYear is not a leap-year.
• Check that DailyStopDay is less than {366} if DailyStopYear is not a leap-year.
• Check that DailyStartYear is less than or equal to DailyStopYear.
• Check that SimStartDay is less than {366} if SimStartYear is not a leap-year.
• Check that SimStopDay is less than {366} if SimStopYear is not a leap-year.
• Check that SimStartYear is less than or equal to SimStopYear.
• Check that MetStartDay is less than {366} if MetStartYear is not a leap-year.
• Check that MetStartYear is greater than or equal to SIM_STARTYEAR and that MetStartYear is less than or equal to SIM_STOPYEAR.
• Check that LAMN is less than or equal to LAMX for a given canopy type and grouped response unit.
• Check that THLQ is equal to {0.04} and THIC is greater than {0} if TBAR is less than or equal to {0} for a given soil layer and grouped response unit to be representative of a frozen soil layer.
• Check that THLQ is greater than {0.04} and THIC is equal to {0} if TBAR if greater than {0} for a given soil layer and grouped response unit to be representative of a thawed soil layer.
• Check that RHOS is greater than {0} if SNO is greater than {0} for a given grouped response unit to ensure that a snow density has been defined if a snow depth has been given.
• Warn that ZBLD should not be less than the vegetation height of the canopy.
• Check that the sum of SAND and CLAY is less than or equal to {100} for a given soil layer and grouped response unit.
• Warn that values of SAND and CLAY should equal {0} if the value of ORGM is equal to {100} for a given soil layer and grouped response unit to be representative of a completely organic (peaty) soil layer.
• Check that SIM_STARTDAY is less than {366} if SIM_STARTYEAR is not a leap-year.
• Check that SIM_STOPDAY is less than {366} if SIM_STOPYEAR is not a leap-year.
• Check that SIM_STARTYEAR is less than or equal to SIM_STOPYEAR.
• Check that all values of SOIL_DEPTH(x) sum to SDEP or {4.1}.