Modeled Ammonia Nitrogen Deposition Source Apportionment at Rocky Mountain National Park for RoMANS2 Mike Barna 1 Marco Rodriguez 2 Kristi Gebhart 1 Bret Schichtel 1 Bill Malm 3 1 NPS, Fort Collins, CO 2 AECOM, Fort Collins, CO 3 CIRA, Fort Collins, CO CMAS Annual Meeting UNC-Chapel Hill October 15-17, 2012
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Modeled Ammonia Nitrogen Deposition Source Apportionment at Rocky Mountain National Park for RoMANS2 Mike Barna 1 Marco Rodriguez 2 Kristi Gebhart 1 Bret.
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Modeled Ammonia Nitrogen Deposition Source Apportionment at
Rocky Mountain National Park for RoMANS2
Mike Barna1
Marco Rodriguez2
Kristi Gebhart1
Bret Schichtel1
Bill Malm3
1 NPS, Fort Collins, CO2 AECOM, Fort Collins, CO
3 CIRA, Fort Collins, CO CMAS Annual MeetingUNC-Chapel Hill
What is the total N deposition at RMNP?• NADP and CASTNet are invaluable resources for
investigating trends and patterns in nitrogen deposition, but can’t answer everything
• Limitations inherent in monitoring:• Not all species of interest are accounted • Dry deposition not a true flux measurement• Spatial and temporal resolution
• Use chemical transport models to fill in gaps• Estimate deposition in unmonitored areas• Round-out the ‘total N deposition’ budget