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Standard names: additional wildland fire indexes #46
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Thank you for your proposal. These terms will be added to the cfeditor (http://cfeditor.ceda.ac.uk/proposals/1) shortly. Your proposal will then be reviewed and commented on by the community and Standard Names moderator. |
Dear Lee @akessenich Thanks for your proposal. For consistency with what was agreed in #142, the first two of these should be
As for the "hot dry windy index", I feel that since it can be written in a non-jargon CF-like way, that would be preferable. According to your definition, we would call it Best wishes Jonathan |
Hi Jonathan, Thank you for your feedback. I agree on changing For the hot dry windy index, it should be clarified that the index is unrelated to the US National Fire Danger Rating System.
Thanks, |
Dear Lee Thanks for clarifying about the US National Fire Danger Rating System. I think this description is fine, except for "Its units are largely meant to be ignored in its interpretation". That's true if you regard it as an index, but not if it's a dimensional geophysical quantity. Instead of that last sentence "Its units ...", would it be correct to say, "As a fire weather index, it should be expressed in hPa m s-1, because these units are expected and usually not stated." Is that the situation, as I guess? Best wishes Jonathan |
Dear Lee @akessenich, I have added your proposed names to the CF editor, and you can view their current status at the links below:
I have only made agreed changes to the entries up to your last post, excluding for the moment @JonathanGregory's suggestion. Looking forward to more discussion on this. Best regards, |
Hi Jonathan, Thanks for your suggestion, it is very close to what needs to be communicated. I've included a sentence from the paper that developed HDW that is hopefully precise: - Term: product_of_wind_speed_and_water_vapor_saturation_deficit_in_air Also thanks to Ellie for adding the proposed names to the CF editor. -- |
That's great. Thanks, Lee.
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Hello Lee @akessenich, I have made the change to the description for Best wishes, |
Hi Ellie, |
Hi Lee @akessenich, Thank you for the references, the abbreviations are also self-explanatory so I don't think these require any further clarifying in the description and they do not need to be removed. Could the paper you reference (Carlson et al. 2007) be included at the end of the description, or is there different literature you think would be more useful here? Best, |
Hi Ellie, Which literature should be included at the end depends on its purpose-- is it to show the acronym is used, or a more generic reference overall? Carlson et al. 2007 was just an example of the acronym, there are more direct documentation for FM1 and FM10 in fire index literature. Thanks, |
This discussion regarding this post dropped off about 3 weeks ago. Is there anything further that I can do to support these terms being added? Thanks, |
Hi Lee, In answer to your earlier question, I think a more generic reference for FM1 and FM10 might be more useful in this case. The original issue #142 does not contain any paper reference, but I think these new names should have one if possible. Do you have documentation in mind? Best wishes, |
Thanks, Ellie. I think that this document, "Gaining a Basic Understanding of the National Fire Danger Rating System" page 27 is well suited for this purpose. |
Hello Lee, Thank you for the reference. I agree that this is suitable and have added this as a link to the proposal in the CF editor. product_of_wind_speed_and_water_vapor_saturation_deficit_in_air As there seems to be general agreement in this issue, these names will be therefore accepted in 7 days if there are no further comments or issues. After this they will be added to the CF standard names table in the next update (v86). Best, |
Hello Lee @akessenich, Some time has passed and these names have now been accepted in the CF editor. They will be published in the next release of the standard names table (anticipated for summer 2024). Thank you again for your proposal! Best regards, |
This is an addendum to names proposed in issue #142.
This work is related to the NA-CORDEX archive and supported by NSF Growing Convergence Research.
Proposer's name: Lee Kessenich, National Center for Atmospheric Research
Date: April 18, 2024
- Term: nfdrs_1_hour_fuel_moisture_content
- Description: 1 hour fuel moisture (FM1) represents the modeled moisture content of dead fuels consisting of herbaceous plants or roundwood less than one-quarter inch in diameter. It also includes the uppermost layer of litter on the forest floor. The 1-hour timelag fuel moisture is a function of length of day (as influenced by latitude and calendar date), daily downwelling shortwave radiation, daily maximum temperature and minimum relative humidity, and daily precipitation values. It is a component in the US National Fire Danger Rating System. The US National Fire Danger Rating System comprises several numeric indexes that rate the potential over a large area for wildland fires to ignite, spread, and require action to suppress or manage. It was designed for use in the continental United States, and all its components are relative, not absolute. *adapted from Gaining a Basic Understanding of NFDRS
- Units: %
- Term: nfdrs_10_hour_fuel_moisture_content
- Description: 10 hour fuel moisture (FM10) represents the modeled moisture content of dead fuels consisting of roundwood in the size range of one quarter to 1 inch in diameter and very roughly, the layer of litter extending from just below the surface to three-quarters of inch below the surface. The 10-hour timelag fuel moisture is a function of length of day (as influenced by latitude and calendar date), daily downwelling shortwave radiation, daily maximum temperature and minimum relative humidity, and daily precipitation values. It is a component in the US National Fire Danger Rating System. The US National Fire Danger Rating System comprises several numeric indexes that rate the potential over a large area for wildland fires to ignite, spread, and require action to suppress or manage. It was designed for use in the continental United States, and all its components are relative, not absolute. *adapted from Gaining a Basic Understanding of NFDRS
- Units: %
- Term: hot_dry_windy_index
- Description: The Hot-Dry-Windy Index is the product of windspeed and vapor pressure deficit. It is a fire weather index that indicates the influence that the atmosphere has on a fire through wind, heat, and moisture. Its units are largely meant to be ignored.
- Units: hPa m s-1
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