Parameter a recalculation formula (Subsidence Overlay): Difference between revisions

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: <math>Q_{10}</math> = The Q10 factor, configured as 3. This value is currently not adjustable.
: <math>Q_{10}</math> = The Q10 factor, configured as 3. This value is currently not adjustable.
: <math>f_{st}</math> = Soil temperature factor, defined by [[Climate_soil_temp_factor_(Subsidence_Overlay)|CLIMATE_SOIL_TEMP_FACTOR]].
: <math>f_{st}</math> = Soil temperature factor, defined by [[Climate_soil_temp_factor_(Subsidence_Overlay)|CLIMATE_SOIL_TEMP_FACTOR]].
: <math>f_{ox}</math> = Oxidation factor, defined by [[Climate_oxidation_(Subsidence_Overlay)|CLIMATE_OXIDATION]].
: <math>f_{ox}</math> = Oxidation factor, defined by [[Climate_oxidation_(Subsidence_Overlay)|CLIMATE_OXIDATION]].<noinclude>
 
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Revision as of 15:06, 9 February 2021

The a parameter is recalculated yearly, to account for a changing climate. The new value for the a parameter is obtained by multiplying the original Parameter a is with a factor. This factor is calculated based on an interpolated average temperature for that year, a soil temperature factor, micro activity and an oxidation factor.

The value of the a parameter is updated each year as follows:

Delta temperature is calculated as:

Delta micro activity is calculated as:

Delta subsidence is calculated as:

The new parameter a value for year y is calculated as:

= The a parameter for the current year.
= The a parameter value at the start of the calculation, defined by PARAMETER_A.
= The current year.
= The start year of the simulation, defined by CLIMATE_START_YEAR.
= The final year of the simulation, defined by the addition of the start year and YEARS.
= The average temperature of the start year, defined by CLIMATE_START_TEMP.
= The average temperature of the final year, defined by CLIMATE_FINAL_TEMP.
= The Q10 factor, configured as 3. This value is currently not adjustable.
= Soil temperature factor, defined by CLIMATE_SOIL_TEMP_FACTOR.
= Oxidation factor, defined by CLIMATE_OXIDATION.