Forest Ecosystem Monitoring Cooperative(802) 656-0683femc@uvm.eduwww.uvm.edu/femc705 Spear StreetSouth BurlingtonVermont05403United States of AmericaUnited States Environmental Protection Agency (EPA) leadVermont Monitoring Cooperative partnerEPA AMoN & CASTNet Aquatic Acidification Index pilot study to measure airborne sulfur and nitrogen oxide concentrationsAcidification of waterbodies is linked to deposition of sulfur and nitrogen oxides. This project will assess the relationship between a proposed index of aquatic acidification due to airborne pollutants and the concentrations in air of ammonia, ammonium, nitrogen oxides and sulfur oxides. Data comes from participation in both the Ammonia Monitoring Network (AMoN) and EPA's CASTNet. AMoN is a NADP network measuring NH3 concentrations across the United States with the goal of providing long term trends in ambient NH3 concentrations and depositions. The VMC air quality site began participating in this network in November 2012 as a component of the AAI. CASTNET is a national air quality monitoring network designed to provide data to assess trends in air quality, atmospheric deposition, and ecological effects due to changes in air pollutant emissions.CASTNET measurements are used to assess long-term, regional trends in sulfur and nitrogen pollutants.EPA AMoN & CASTNet Aquatic Acidification Index pilot study to measure airborne sulfur and nitrogen oxide concentrationsPendletonMiriamScheffeRichwater chemistryacid neutralizing capacityatmospheric depositionaquatic acidification indexNADP Average Ammonia Concentration- more than one sampler2012-11-20Replicates of ammonia concentrationProvide a consistent, long-term record of ammonia gas (NH3) concentrations from Vermont for use in the aquatic acidification modelZ0312_AMoNVT99_AveVMC.312.412mySQLPublished use of CASTNET data or info must acknowledge CASTNET as the source: U.S. Environmental Protection Agency Clean Air Markets Division Clean Air Status and Trends Network (CASTNET) [Data table(s) accessed (i.e., Hourly Ozone, Annual Total Deposition)]Available at www.epa.gov/castnet and date https://vmc.w3.uvm.edu/vmcdevel/CI4/data/archive/project/aquatic-acidification-index-pilot-study-to/dataset/nadp-average-ammonia-concentration-more-thanAIRVOLAIRVOLTotal volume of air sampled, m3; value is calculated from exposure time and derived flow rate following the SOP; missing values are indicated by -9.0decimalCHNGDATECHNGDATEMost recent date and time any data values were edited within the NADPID setdatetimeM-DD-YYYY hh:mm:ssCONCCONCArithmetic average gaseous ammonia concentration, μg/m³; value is indicated as -9.00 if there were no valid individual replicate values during the sampling perioddecimalENDDATEENDDATEEnd date and time of sample exposure, GMTdatetimeM-DD-YYYY hh:mm:ssNADPIDNADPIDUnique NADP identifier of individual sample sets consisting of one or more sample replicates and a travel blank deployed togethertextQRQRQuality Rating Code: A fully qualified with no problems, B valid data with minor problems, C invalid datatextSITEIDSITEIDTwo-letter location designator followed by a two digit numbertextSTARTDATESTARTDATEStart date and time of sample exposure, GMTdatetimeM-DD-YYYY hh:mm:ss