Submitted to: Journal of Air and Waste Management Association
Publication Type: Abstract Only
Publication Acceptance Date: 3/31/2003
Publication Date: 3/31/2003
Citation: Sharratt, B.S. 2003. Summary of the Columbia Plateau Wind Erosion/Air Quality Project. Canadian Prairie and Northern Section of the Air & Waste Management Association Annual Meeting. Abstract. Interpretive Summary:
Technical Abstract: High winds and fallow dryland fields contribute to the occurrence of blowing dust which is the primary reason that several locations within the Columbia Plateau have failed to meet federal clean air standards for PM10. For the past decade, a multi-disciplinary team of scientists has attempted to define mechanisms of PM10 emissions from agricultural soils, identify management strategies to control emissions, and quantify PM2.5 emissions during burning of crop residue. While a regional PM10 emissions model predicts that emissions can be curtailed by maintaining 25% cover on the soil surface, the lack of residual biomass from the previous crop and the economic advantage of using conventional tillage prevent effective maintenance of residue cover during the 13-month fallow period. Emission of PM2.5 during burning crop residue is directly proportional to combustion efficiency, thus practices that enhance combustion will reduce PM2.5 emissions. Little is known, however, which management practices enhance combustion efficiency. Many questions yet remain about emissions during dust storms and burning crop residue. Future research will include continued development on best management farming practices.