usda forest service air quality research update · critical loads and levels data needs zto...
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27 August 2006 A. R. Riebau National Program Leader for Atmospheric Sciences Research
USDA Forest Service Air Quality Research Update
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Topics
CSREES Research Database
Critical Loads National Map (draft)
OFCM National Fire Weather Needs Assessment
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CSREES Research Database
Updated this month
Forty-five projects reported
Topics include a focus on smoke, carbon, deposition, and ozone
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Critical Loads National Map (draft)
Simple mass-balance approach
‘First cut’ map, needs refinement
Working to improve and include surface waters
Author: Steve McNulty – Southern Research Station
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Simple CL National Map Overview(from Steve McNulty, Southern Research Station)
DataSimple Mass Balance EquationCritical LoadsExceedanceData Needs
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Critical Loads (nitrogen and sulfur only)Reference: Steve McNulty
Critical Loads of Acidity in Forest Soils
Wet Depostion OnlySoil_texture Weathering MethodBC uptake, Nitrogen Uptake conifer = 252, 279 decid = 613, 278
Ni = 0.6Nde = 0Kgibb = 300Bc/Al = 1
eq/ha/yr4,000 - 7,000
3,000 - 4,000
2,000 - 3,000
1,000 - 2,000
0 - 1,000
-50 - 0
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Critical Loads and Levels Data Needs
To effectively develop critical loads and levels for USDA Forest Service clients we need data on:
Wet and dry nitrogen and sulfur deposition amountsTree base cation UptakeTree nitrogen Uptake Threshold limits for key speciesSoils structure and chemistryBase geology/acid neutralizing capacityBasic freshwater chemistry and surface water body physical featuresOzone concentration information (passive and active monitors)Tree crown condition and leaf chemistry
Critical Loads of Acidity in Forest Soils
Wet Depostion OnlySoil_texture Weathering MethodBC uptake, Nitrogen Uptake conifer = 252, 279 decid = 613, 278
Ni = 0.6Nde = 0Kgibb = 300Bc/Al = 1
eq/ha/yr4,000 - 7,000
3,000 - 4,000
2,000 - 3,000
1,000 - 2,000
0 - 1,000
-50 - 0
While some information will need to be collected, much of this information is currently available (FIA/FHM, EPA, LTER/Experimental Forests)
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27 August 2006 A. R. Riebau National Program Leader for Atmospheric Sciences Research
National Wildland Fire Weather Needs Assessment:Office of the Federal Coordinator for Meteorology
Co- Chairs:
Dr. Allen Riebau, USDA/FSEli Jacks, NWS
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- In 2003, wildland fires in Southern California claimed 22 lives, destroyed 3,600 homes, burned 740,000 acres of land, and caused over $2 billion in property damage
By June 1, 2006 in Texas, wildland fires have claimed 11 lives, destroyed 440 homes, and burned over 5 million acres
Background
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Goals
Conduct a comprehensive review and assessment of weather, climate, and smoke needs of providers and users in their wildland fire and fuels management activities
Assess the capabilities of the provider agencies to ensure that needed weather and climate information is available to fire managers and other users
Ultimately, raise the critical nature of fire weather to a new level of community awareness
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JAG/NWFWNA Web Site
http://www.ofcm.gov/jag-nwfwna/index.htm
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Thanks!
Allen R. Riebau, PhD.National Program Leader for Atmospheric
Sciences ResearchUSDA Forest Service
Washington, DC,