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Type: Conference Paper
Author(s): W. C. Malm
Publication Date: 1983

Goals and objectives outlined in the Clean Air Act of 1977 are in conflict with land management practices that utilize control or prescribed burns to maintain a healthy ecosystem. Specifically, smoke emissions from burn areas can significantly and adversely affect the visual air quality in scenic Class I areas such as the Grand Canyon National Park. As a consequence, there is a need to develop appropriate modeling and monitoring tools capable of predicting and measuring visibility impacts associated with fire emissions. While current modeling efforts have made reasonable progress in predicting local transport of smoke emissions, little work has gone into predicting visual effects of emissions, nor has much effort been expended in trying to predict transport or visual effects of smoke transported over long distances. There are also significant shortcomings associated with the ability to attribute the amount of visibility reduction associated with smoke. Visual impacts of smoke can be quantified through monitoring techniques. However, little effort has gone into techniques that will allow the FLM to determine how much of a given visibility reduction can be associated with smoke. One potentially useful technique, utilizing excess potassium for determining the effect of uniformly dispersed smoke has been put forth in this paper. However, much work remains to validate this approach and to further refine the proposed methodology.

Citation: Malm, W. C. 1983. Visibility and smoke management in Class I areas, Proceedings Fire and Forest Meteorology, Seventh Conference. Ft. Collins, CO. American Meteorological Society,Boston, MA. p. 99-104,

Cataloging Information

Alaska    California    Eastern    Great Basin    Hawaii    Northern Rockies    Northwest    Rocky Mountain    Southern    Southwest    National
  • aesthetics
  • air quality
  • K - potassium
  • land management
  • landscape ecology
  • national parks
  • natural areas management
  • natural resource legislation
  • pollution
  • smoke effects
  • smoke management
  • wilderness fire management
Tall Timbers Record Number: 9606Location Status: In-fileCall Number: Fire File DDWAbstract Status: Fair use, Okay, Reproduced by permission
Record Last Modified:
Record Maintained By: FRAMES Staff (
FRAMES Record Number: 35308

This bibliographic record was either created or modified by Tall Timbers and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of Tall Timbers.