{"accessLevel": "public", "bureauCode": ["020:00"], "contactPoint": {"fn": "Melissa Puchalski", "hasEmail": "mailto:puchalski.melissa@epa.gov"}, "describedBy": "https://pasteur.epa.gov/uploads/10.23719/1524284/documents/NHx%20QAPP%20052317%20Signed.pdf", "describedByType": "application/pdf", "description": "Dataset includes reduced nitrogen (NHx) concentrations that were collected at Duke Forest, NC and Gainesville, FL using a CSN MetOne SuperSASS and IMPROVE PM sampler from May - October 2017. Using an acid impregnated filter in the CSN and IMPROVE samplers, NHx concentrations were compared to URG annular denuder measurements. Results are summarized in a report: Improving characterization of reduced nitrogen at IMPROVE and CSN monitoring sites (https://www.epa.gov/system/files/documents/2021-11/nhx_summary-report_final.pdf). Citation information for this dataset can be found in the EDG's Metadata Reference Information section and Data.gov's References section.", "distribution": [{"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_QC.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NHX_QC.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_Final.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NHX_Final.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_Flags.csv", "mediaType": "application/vnd.ms-excel", "title": "NHX_Flags.csv"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHx_QC_Metadata.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NHx_QC_Metadata.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHx_Final_Metadata.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NHx_Final_Metadata.xlsx"}], "identifier": "https://doi.org/10.23719/1524284", "keyword": ["reduced nitrogen", "chemical speciation network", "IMPROVE", "ambient ammonia", "Castnet"], "license": "https://pasteur.epa.gov/license/sciencehub-license.html", "modified": "2018-10-23", "programCode": ["020:000"], "publisher": {"name": "U.S. Environmental Protection Agency", "subOrganizationOf": {"name": "U.S. Government"}}, "references": ["https://www.epa.gov/system/files/documents/2021-11/nhx_summary-report_final.pdf", "https://pasteur.epa.gov/uploads/10.23719/1524284/documents/NHx%20QAPP%20052317%20Signed.pdf"], "rights": null, "title": "Chemical Speciation Network and IMPROVE Reduced Nitrogen Method Evaluation"}