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Project ID: 98-1-9-01

Year: 1998

Date Started: 09/28/1998

Date Completed: 01/31/2007

Title: Smoke Produced from Residual Combustion

Project Proposal Abstract: Project Objectives For at least 5 different major classes of fuels typically involved in residual smoldering combustion (RSC) and two different moisture content conditions dispersed over at least 10 different sites. Four of these will be in the western USA, 3 in the southeast, 2 in the Lake States, and possibly 1 area in Alaska. We propose to: I. Measure the rate of release of carbon and to calculate fuel consumption and heat release incrementally over time over a time of sufficient duration (36 to 72 hours) to describe 95% of the consumption for the selected fuel elements including those of the Ottmar inventory. Included will be duff near trees, duff between trees, rotten logs larger than 6 diameter, partially rotten logs larger than 6, smaller diameter rotten logs, smaller diameter partially rotten logs, large stumps, small stumps and other fuel categories known to be important. 2. For the same fuel categories listed in item 1, measure the emissions released over time. Determine if emission factors for smoke particulate matter are lower for heavy ash conditions and whether the ash catalyzes the oxidation process with a decrease in emission factors for PM2.5, hydrocarbons, and possibly CO. Provide models for evaluating emission factors by fuel type for EPM. 3. For a few fires, using a matrix of samplers downwind of the fire, measure the local impact of smoke close to the source (within one mile), especially for those cases where drainage winds are important. 4. Provide models, guidelines, and data for describing in terms of prescription variables the probability of encountering significant RSC for different fuel situations (the fuel situations to be identified through Ottmar's photo series or survey methods). 5. Samples of several of the fuels will be returned to the Forest Fire Laboratory for further more detailed study. This part of the study will be funded by existing fire research.

Principal Investigator: Wei Min M. Hao

Agency/Organization: Forest Service

Branch or Dept: RMRS-Fire Sciences Lab-Missoula

Other Project Collaborators




Branch or Dept

Co-Principal Investigator

Ronald E. Babbitt

Forest Service

RMRS-Fire Sciences Lab-Missoula

Co-Principal Investigator

Sue A. Ferguson

Forest Service

PNW-Seattle-Managing Natural Disturbances

Co-Principal Investigator

Peter W. Lahm

Forest Service

WO-Fire & Aviation Management

Co-Principal Investigator

Roger D. Ottmar

Forest Service

PNW-Seattle-Managing Natural Disturbances

Co-Principal Investigator

David V. Sandberg

Forest Service

PNW-Forestry Sciences Lab-Corvallis

Co-Principal Investigator

Ronald A. Susott

Forest Service

RMRS-Fire Sciences Lab-Missoula

Co-Principal Investigator

Robert J. Yokelson

University of Montana

Department of Chemistry & Biochemistry

Federal Cooperator

Wei Min M. Hao

Forest Service

RMRS-Fire Sciences Lab-Missoula

Project Locations

Fire Science Exchange Network




Great Basin

Great Plains

Lake States

Oak Woodlands

Northern Rockies




Southern Rockies



There are no project locations identified for this project.

Project Deliverables

Final Report view or print

("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

  ID Type Title
view or print   2508 Journal Article Journal of Geophysical Research
view or print   2522 Journal Article Journal of Geophysical Research
    2523 Journal Article Smoldering Limits of Alaska Duff
view or print   2507 Journal Article Journal of Geophysical Research
    309 MS Thesis Variation of Specific Gravity (Bulk Density) in Conifer Stumps With Reference to Sampling Technique and Decay Class--G. Jomo Mafoko
    533 Conference/Symposia/Workshop Introduction of Revised EPM

Supporting Documents

There are no supporting documents available for this project.

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