A Conceptual Interpretation of the Drought Code of the Canadian Forest Fire Weather Index System
Abstract
1. Introduction
2. Turner’s Water Balance Model
3. Discussion
4. Conclusions
5. Comparison of the Algorithms
Funding
Acknowledgments
Conflicts of Interest
Abbreviations
Abbreviations | |
DC | Drought Code |
DMC | Duff Moisture Code |
FFMC | Fine Fuel Moisture Code |
FWI | Fire Weather Index System of the Canadian Forest Fire Danger Rating System |
Variables | |
a | Conversion factor equal to . See Section 5. |
b | Unit conversion factor. See Section 5. |
D | Drought Code (Unitless) |
Drought Code, yesterday’s (Unitless) | |
Drought Code, corrected for precipitation (Unitless) | |
Actual evaporation () | |
Potential evaporation () | |
Potential evaporation, monthly adjustment from Table 1 () | |
P | Precipitation corrected for canopy interception (mm) |
Precipitation in the open (mm) | |
S | Soil water storage (mm) |
Soil water storage, yesterday’s (mm) | |
The harmonic mean of and S (mm). See Section 5. | |
Maximum water storage (mm) | |
Soil water storage, corrected for precipitation (mm) | |
Air temperature () |
References
- Stocks, B.J.; Lawson, B.D.; Alexander, M.E.; Van Wagner, C.E.; McAlpine, R.S.; Lynham, T.J.; Dubé, D.E. The Canadian Forest Fire Danger Rating System: An overview. For. Chron. 1989, 65, 450–457. [Google Scholar] [CrossRef]
- Van Wagner, C.E. Development and Structure of the Canadian Forest Fire Weather Index System; Forestry Technical Report 35; Canadian Forestry Service: Ottawa, ON, Canada, 1987.
- Stocks, B.J.; Lawson, B.D.; Alexander, M.E.; Van Wagner, C.E.; McAlpine, R.S.; Lynham, T.J.; Dube, D.E. The Canadian System of Forest Fire Danger Rating. In Proceedings of the Conference on Bushfire Modelling and Fire Danger Rating Systems, CSIRO, Canberra, Australia, 11–12 July 1988; pp. 9–18. [Google Scholar]
- Wotton, B.M. Interpreting and using outputs from the Canadian Forest Fire Danger Rating System in research applications. Environ. Ecol. Stat. 2008, 16, 107–131. [Google Scholar] [CrossRef]
- Van Wagner, C.E. Structure of the Canadian Forest Fire Weather Index; Technical Report; Departmental Publication 1333; Canadian Forestry Service, Petawawa Forest Experiment Station: Chalk River, ON, Canada, 1974.
- Miyanishi, K. Duff Consumption. In Forest Fires: Behavior and Ecological Effects, 1st ed.; Johnson, E.A., Miyanishi, K., Eds.; Academic Press: San Diego, CA, USA, 2001; pp. 437–475. [Google Scholar]
- Ryan, K.C. Dynamic interactions between forest structure and fire behavior in boreal ecosystems. Silva Fenn. 2002, 36, 548. [Google Scholar] [CrossRef]
- Turner, J.A. The Stored Moisture Index: A Guide to Slash Burning; Technical Report; British Columbia Forest Service, Protection Division: Victoria, BC, Canada, 1966. [Google Scholar]
- Turner, J.A. The Drought Code Component of the Canadian Forest Fire Behavior System; Technical Report; Publication No. 1316; Environment Canada, Canadian Forestry Service: Ottawa, ON, Canada, 1972.
- Nelson, R.M. Some Factors Affecting the Moisture Timelags of Woody Materials; Technical Report; Research Paper SE-44; U.S. Forest Service, Southeastern Forest Experiment Station: Asheville, NC, USA, 1969.
- Van Wagner, C.E. A laboratory study of weather effects on the drying rate of jack pine litter. Can. J. For. Res. 1979, 9, 267–275. [Google Scholar] [CrossRef]
- Van Wagner, C.E. Drought, Timelag, and Fire Danger Rating; Eighth Conference on Fire and Forest Meteorology; Society of American Foresters: Detroit, MI, USA, 1985; pp. 178–185. [Google Scholar]
- Byram, G.M.; Nelson, R.M. An Analysis of the Drying Process in Forest Fuel Material; Technical Report; e-General Technical Report SRS-200; U.S. Forest Service, Southern Research Station: Asheville, NC, USA, 2015.
- Nelson, R.M. Water Relations of Forest Fuels. In Forest Fires: Behavior and Ecological Effects, 1st ed.; Johnson, E.A., Miyanishi, K., Eds.; Academic Press: San Diego, CA, USA, 2001; pp. 79–149. [Google Scholar]
- McMahon, T.A.; Peel, M.C.; Lowe, L.; Srikanthan, R.; McVicar, T.R. Estimating actual, potential, reference crop and pan evaporation using standard meteorological data: A pragmatic synthesis. Hydrol. Earth Syst. Sci. 2013, 17, 1331–1363. [Google Scholar] [CrossRef]
- Hobbins, M.; Huntington, J. Evapotranspiration and evaporative demand. In Handbook of Applied Hydrology, 2nd ed.; McGraw-Hill Publishing: New York, NY, USA, 2016; pp. 42.1–42.18. [Google Scholar]
- Miller, E.; Wilmore, B. Evaluating the Drought Code Using In Situ Drying Timelags of Feathermoss Duff in Interior Alaska. Fire. under review.
- Johnson, E.; Keith, D.; Martin, Y. Comparing measured duff moisture with a water budget model and the duff and drought codes of the Canadian Fire Weather Index. For. Sci. 2013, 59, 78–92. [Google Scholar] [CrossRef]
- Hanks, R.J.; Ashcroft, G.L. Applied Soil Physics: Soil Water and Temperature Applications; OCLC: 5029519; Springer: Berlin, Germany; New York, NY, USA, 1980. [Google Scholar]
- Heikinhemo, M.; Venäläinen, A.; Tourula, T. A soil moisture index for the assessment of forest fire risk in the boreal zone. In Proceedings of the International Symposium on Applied Agrometeorology and Agroclimatology, Volos, Greece, 24–26 April 1996; Dalezios, N., Ed.; European Commission: Volos, Greece, 1998; pp. 549–555. [Google Scholar]
- Venäläinen, A.; Heikinheimo, M. The Finnish Forest Fire Index Calculation System. In Early Warning Systems for Natural Disaster Reduction; Zschau, J., Kuppers, A., Eds.; Springer: Berlin/Heidelberg, Germany, 2003; pp. 645–647. [Google Scholar] [CrossRef]
- Lawson, B.D.; Dalrymple, G.N. Ground-Truthing the Drought Code: Field Verification of Overwinter Recharge of Forest Floor Moisture, with Errata (2012); Technical Report; FRDA Report 268; Canada/British Columbia Partnership Agreement On Forest Resource Developement: FRDA II; Forestry Canada, Pacific Forestry Centre: Victoria, BC, Canada, 1996. [Google Scholar]
- Bourgeau-Chavez, L.; Kasischke, E.S.; Rutherford, M.D. Evaluation of ERS SAR data for prediction of fire danger in a boreal region. Int. J. Wildland Fire 1999, 9, 183–194. [Google Scholar] [CrossRef]
- Bourgeau-Chavez, L.L.; Garwood, G.; Riordan, K.; Cella, B.; Alden, S.; Kwart, M.; Murphy, K. Improving the prediction of wildfire potential in boreal Alaska with satellite imaging radar. Polar Rec. 2007, 43, 321–330. [Google Scholar] [CrossRef]
- Yang, Y.; Uddstrom, M.; Pearce, H.; Revell, M. Reformulation of the Drought Code in the Canadian Fire Weather Index System Implemented in New Zealand. J. Appl. Meteorol. Climatol. 2015, 54, 1523–1537. [Google Scholar] [CrossRef]
- Flannigan, M.D.; Wotton, B.M.; Marshall, G.A.; de Groot, W.J.; Johnston, J.; Jurko, N.; Cantin, A.S. Fuel moisture sensitivity to temperature and precipitation: Climate change implications. Clim. Chang. 2016, 134, 59–71. [Google Scholar] [CrossRef]
- Van Wagner, C.E.; Pickett, T.L. Equations and FORTRAN Program for the Canadian Forest Fire Weather Index System; Technical Report; Forestry Technical Report 33; Canadian Forest Service: Ottawa, ON, Canada, 1985.
Month | (mm) |
---|---|
April | 0.229 |
May | 0.965 |
June | 1.47 |
July | 1.63 |
August | 1.27 |
September | 0.610 |
October | 0.102 |
November–March | −0.406 |
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Miller, E.A. A Conceptual Interpretation of the Drought Code of the Canadian Forest Fire Weather Index System. Fire 2020, 3, 23. https://doi.org/10.3390/fire3020023
Miller EA. A Conceptual Interpretation of the Drought Code of the Canadian Forest Fire Weather Index System. Fire. 2020; 3(2):23. https://doi.org/10.3390/fire3020023
Chicago/Turabian StyleMiller, Eric A. 2020. "A Conceptual Interpretation of the Drought Code of the Canadian Forest Fire Weather Index System" Fire 3, no. 2: 23. https://doi.org/10.3390/fire3020023
APA StyleMiller, E. A. (2020). A Conceptual Interpretation of the Drought Code of the Canadian Forest Fire Weather Index System. Fire, 3(2), 23. https://doi.org/10.3390/fire3020023