{"accessLevel": "public", "bureauCode": ["020:00"], "contactPoint": {"fn": "John Walker", "hasEmail": "mailto:walker.johnt@epa.gov"}, "description": "Data in Figure 1 are from publicly available databases including county-level ammonia (NH3) emissions from the US EPA National Emissions Inventory (https://www.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-data), ambient ammonium (NH4+) aerosol concentrations from the US EPA Clean Air Status and Trends Network (https://java.epa.gov/castnet/clearsession.do), and ambient NH3 concentrations from the National Atmospheric Deposition Program Ammonia Monitoring Network (AMoN) (http://nadp.slh.wisc.edu/data/AMoN/)\n\nSatellite observations of NH3 from the Infrared Atmospheric Sounding Instrument (IASI V2.2R) shown in Figure 2 are also publicly available (https://en.aeris-data.fr/metadata/?dc9dcce0-9324-451b-8d79-2d6df3094068).\n\nDiurnal profiles of ambient NH3 at different sites across the U.S. are summarized in Figure 3. Data from sites operated by EPA Office of Research and Development are attached as a spreadsheet with accompanying data dictionary.  Greg Beachley (Beachley.gregory) is the contact for data from the Charleston, SC; Beltsville, MD and Bondville, IL sites.  Katherine Benedict (Katherine.Benedict@colostate.edu) is the contact for data from the RMNP; Fort Collins, CO and  Greeley, CO sites. \n\nThis dataset is associated with the following publication:\nPuchalski, M., J. Walker, G. Beachley, M. Zondlo, K. Benedict, R. Grant, B. Schichtel, C. Rogers, A. Leytem, J. Rice, K. Morris, J. Schauer, and R. Wang. Need for Improved Monitoring of Spatial and Temporal Trends of Reduced Nitrogen.   ENVIRONMENTAL MANAGEMENT. Springer-Verlag, New York, NY, USA,  0, (2019).", "distribution": [{"accessURL": "https://en.aeris-data.fr/metadata/?dc9dcce0-9324-451b-8d79-2d6df3094068", "title": "https://en.aeris-data.fr/metadata/?dc9dcce0-9324-451b-8d79-2d6df3094068"}, {"accessURL": "https://java.epa.gov/castnet/clearsession.do", "title": "https://java.epa.gov/castnet/clearsession.do"}, {"accessURL": "https://nadp.slh.wisc.edu/data/AMoN/", "title": "https://nadp.slh.wisc.edu/data/AMoN/"}, {"accessURL": "https://www.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-data", "title": "https://www.epa.gov/air-emissions-inventories/2014-national-emissions-inventory-nei-data"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1518502/NHx_Puchalski%20et%20al_2019.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NHx_Puchalski et al_2019.xlsx"}], "identifier": "https://doi.org/10.23719/1518502", "keyword": ["bidirectional flux", "deposition", "micrometeorology", "nitrogen", "sulfur"], "license": "https://pasteur.epa.gov/license/sciencehub-license.html", "modified": "2020-04-03", "programCode": ["020:000"], "publisher": {"name": "U.S. EPA Office of Research and Development (ORD)", "subOrganizationOf": {"name": "U.S. Environmental Protection Agency", "subOrganizationOf": {"name": "U.S. Government"}}}, "references": ["https://www.awma.org/empastissues"], "rights": null, "title": "Need for Improved Monitoring of Spatial and Temporal Trends of Reduced Nitrogen"}