@prefix ns0: . @prefix skos: . ns0:altLabel [ ] ; skos:broader ; skos:prefLabel "EMEFS"@en ; skos:inScheme ; skos:definition """Description: Canada and the United States carried out an atmospheric research program called the Eulerian Model Evaluation Field Study (EMEFS) from June 1, 1988 to May 31, 1990 under the coordination and management of a bi-lateral, multi-agency Project Management Group (PMG). The objective of the program was to collect daily air and precipitation chemistry data for use in evaluating two Eulerian long-range transport models: the Regional Acid Deposition Model (RADM) developed by the U.S. Environmental Protection Agency, and the Atmospheric Deposition and Oxidants Model (ADOM) developed jointly by Environment Canada, the Ontario Ministry of Environment and Energy, the German Umweltbundesamt, and the Electric Power Research Institute. Data collected have been and continue to be used to evaluate estimates of sulfate (SO4=) and nitrate (NO3-) concentrations in air and precipitation. The field component of EMEFS had two parts: 1) a surface network designed to collect data for operational model evaluations, i.e., over long-periods and large spatial scales, and 2) intensive surface and aircraft field campaigns to support short-term diagnostic model evaluations. The EMEFS surface network consisted of approximately 130 sites in five networks sponsored by different governmental and non-governmental agencies. Site selection was coordinated by the agencies to establish a regionally representative network. The five networks were: OEN: Operational Evaluation Network - funded by the Electric Power Research Institute (25 EMEFS sites) CAPMoN: Canadian Air and Precipitation Monitoring Network - operated by Environment Canada, Atmospheric Environment Service (22 EMEFS sites) FADMP: Florida Acid Deposition Monitoring Program - funded by the Florida Electric Power Coordinating Group (4 EMEFS sites) APIOS: Acid Precipitation In Ontario Study - operated by the Ontario Ministry of Environment and Energy (18 EMEFS sites). Acid MODES: Acid Model Operational Diagnostic Evaluation Study - funded by U.S. Environmental Protection Agency (59 EMEFS sites including variability (VAR) and gradient (GRAD) special study sub-networks). The Acid MODES variability sub-network was a four-site cluster of sites used to evaluate spatial concentration variability on the 80 - 100 km grid scale of the models being evaluated. The gradient sub-network similarly provided a higher spatial network resolution in an area where sharp spatial concentration gradients were observed in previous studies. For more information see: "http://src.com/~epriasdc/emefs/emefs.htm'"""@en ; a skos:Concept . skos:prefLabel "D - F"@en ; a skos:Concept ; skos:narrower .