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Theoretical background on pwsFWI: Difference between revisions
Theoretical background on pwsFWI (view source)
Revision as of 15:10, 13 April 2021
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#If on one day an amount of rain between 1 and 5 mm has fallen, '''that day''' is skipped so that its value of pwsFWI does not contribute to the average of the five days | #If on one day an amount of rain between 1 and 5 mm has fallen, '''that day''' is skipped so that its value of pwsFWI does not contribute to the average of the five days | ||
#if on one day an amount of more than 5 mm has fallen, '''that day and the next day''' are skipped so that their values of pwsFWI do not contribute to the average of the the five days | #if on one day an amount of more than 5 mm has fallen, '''that day and the next day''' are skipped so that their values of pwsFWI do not contribute to the average of the the five days | ||
And finally a minor contribution, a fine tuning, is made to the pwsFWI by the length of the dry period in days because long dry periods take all moisture from deep within thick wood. Thick wood however does not easily ignite by a spark, not even when it is dry. | And finally a minor contribution, a fine tuning, is made to the pwsFWI by adding the length of the dry period in days to pwsFWI because long dry periods take all moisture from deep within thick wood. Thick wood however does not easily ignite by a spark, not even when it is dry. | ||
== Word of thanks == | == Word of thanks == | ||