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Theoretical background on pwsFWI: Difference between revisions
Theoretical background on pwsFWI (view source)
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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 == | ||
H/T for the original testers and contributors of information who worked with me to achieve the final result. | H/T for the original testers and contributors of information who worked with me to achieve the final result. | ||
You can find the listing in the blog : [https://meteo-wagenborgen.nl/wp/2019/09/21/sites-which-carry-the-fire-weather-index-pwsfwi/ Sites which carry the Fire Weather Index pwsFWI]. Most of them still carry the Fire Weather Index page but because updating the software is not so very important for them, they fell of the map which replaced the list and became part of CumulusUtils. Once they upgrade they will automatically be shown on the map again. | You can find the listing in the blog : [https://meteo-wagenborgen.nl/wp/2019/09/21/sites-which-carry-the-fire-weather-index-pwsfwi/ Sites which carry the Fire Weather Index pwsFWI]. Most of them still carry the Fire Weather Index page but because updating the software is not so very important for them, they fell of the [[Map - Users of CumulusUtils|map]] which replaced the list and became part of CumulusUtils. Once they upgrade they will automatically be shown on the [[Map - Users of CumulusUtils|map]] again. | ||
== References == | == References == | ||