Ground-Truthing the Drought Code: Field Verification of Overwinter Recharge of Forest Floor Moisture. Lawson, B. D. & Dalrymple, G. N. Volume 268 , Canadian Forest Service, Pacific Forestry Centre.
Ground-Truthing the Drought Code: Field Verification of Overwinter Recharge of Forest Floor Moisture [link]Paper  abstract   bibtex   
[Excerpt:Executive summary] Users of the Canadian Forest Fire Weather Index System are required to precede computation of the Drought Code (DC) component each spring by first calculating a mathematical model of overwinter recharge of moisture in the forest floor. Practical limitations of the mathematical model, required for operational simplicity, have resulted in requests from users for a field sampling procedure that can be used to verify the model, where, and when desired. [] This report describes a standard procedure for destructively sampling the forest floor by depth class, oven-drying the material, and comparing the actual moisture contents against empirically derived regression equations of forest floor moisture versus DC for representative mature coastal and interior British Columbia forests, and for white spruce forests in southern Yukon. The field verification procedures and calibration equations presented here will be applicable to DC startup, not only in early spring, but any time during the fire season that a fire weather station is started up; hence, this report is relevant to prescribed burning and project wildfire operations, as well as to fire danger rating network stations.
@book{lawsonGroundtruthingDroughtCode1996,
  title = {Ground-Truthing the {{Drought Code}}: Field Verification of Overwinter Recharge of Forest Floor Moisture},
  author = {Lawson, B. D. and Dalrymple, G. N.},
  date = {1996},
  volume = {268},
  publisher = {{Canadian Forest Service, Pacific Forestry Centre}},
  location = {{Victoria, Canada}},
  issn = {0835-0752},
  url = {http://mfkp.org/INRMM/article/14173805},
  abstract = {[Excerpt:Executive summary]

Users of the Canadian Forest Fire Weather Index System are required to precede computation of the Drought Code (DC) component each spring by first calculating a mathematical model of overwinter recharge of moisture in the forest floor. Practical limitations of the mathematical model, required for operational simplicity, have resulted in requests from users for a field sampling procedure that can be used to verify the model, where, and when desired. 

[] This report describes a standard procedure for destructively sampling the forest floor by depth class, oven-drying the material, and comparing the actual moisture contents against empirically derived regression equations of forest floor moisture versus DC for representative mature coastal and interior British Columbia forests, and for white spruce forests in southern Yukon. The field verification procedures and calibration equations presented here will be applicable to DC startup, not only in early spring, but any time during the fire season that a fire weather station is started up; hence, this report is relevant to prescribed burning and project wildfire operations, as well as to fire danger rating network stations.},
  isbn = {0-7726-3092-5},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-14173805,canada,droughts,field-measurements,fire-fuel,fire-weather-index,forest-fires,forest-resources,prescribed-burn,wildfires}
}

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