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RMRS-GTR-230WWW: U.S. Forest Service Region 1 Lake Chemistry, NADP, and IMPROVE air quality data analysis


Grenon, Jill; Story, Mark. 2009. U.S. Forest Service Region 1 Lake Chemistry, NADP, and IMPROVE air quality data analysis. Gen. Tech. Rep. RMRS-GTR-230WWW. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 42 p.

This report was developed to address the need for comprehensive analysis of U.S. Forest Service (USFS) Region 1 air quality monitoring data. The monitoring data includes Phase 3 (long-term data) lakes, National Atmospheric Deposition Program (NADP), and Interagency Monitoring of Protected Visual Environments (IMPROVE). Annual and seasonal data for the periods of record were evaluated for trends using non-parametric (SAS) protocols. The most significant trends were the consistent decrease in SO4 2- and increase in NH4 + at the NADP sites. Standard visual Range increased and extinction decreased at all the IMPROVE sites. Annual visibility was reduced during years of heavy wildland fire. In conclusion, considerations were listed regarding current and future monitoring and National Forest air quality protection including lake sampling protocols, and NADP and IMPROVE site continuation.

Keywords: Northern Rocky Mountain air quality, NADP, IMPROVE, lake chemistry, SAS, air quality trends


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Title: RMRS-GTR-230WWW: U.S. Forest Service Region 1 Lake Chemistry, NADP, and IMPROVE air quality data analysis
Electronic Publish Date: September 10, 2009
Expires: Indefinite
Last Update:
September 10, 2009

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