Wet Deposition Maps Patterns of wet deposition of the nitrate/sulfate/ammonium ion across eastern Canada and the United States are based on measurements of precipitation depth and nitrate/sulfate/ammonium concentrations in precipitation samples. These measurements were collected and quality controlled by their respective networks: in Canada, the federal Canadian Air and Precipitation Monitoring Network (CAPMoN) and provincial or territorial networks in Alberta, New Brunswick, the Northwest Territories, Nova Scotia, Ontario and Quebec. In the United States, wet deposition measurements were made by two coordinated networks: the National Atmospheric Deposition Program (NADP) / National Trends Network (NTN) and the NADP/Atmospheric Integrated Research Monitoring Network (AIRMoN). Total annual deposition from each site was screened for completeness using the following criteria: (1) Precipitation amounts were recorded for >90% of the year and >60% of each quarter, and (2) a nitrate/sulfate/ammonium concentration was reported for >70% of the precipitation measured over the year and for >60% of each quarter. Only data from sites that had been designated as regionally representative were used in the mapping. Annual deposition amounts were interpolated using ordinary kriging using ArcMap Geostatistical Analyst. The map is limited to the contiguous U.S. and southeastern Canada because outside that region, the interpolation error exceeds 30% due to the larger distances between stations. 2019-08-21 2019-11-09 Environment and Climate Change Canada EC.NatChem.EC@canada.ca Nature and EnvironmentAir - QualityAtmosphereNational (CA)Air quality NO3DESRI REST https://maps-cartes.ec.gc.ca/arcgis/rest/services/NO3D/MapServer/0 AtmosphericPrecipitationChemistry-WetDepositionMaps-NO3Deposition-1981_2014.gdb.zipZIP http://data.ec.gc.ca/data/air/monitor/monitoring-of-atmospheric-precipitation-chemistry/wet-deposition-maps/AtmosphericPrecipitationChemistry-WetDepositionMaps-NO3Deposition-1981_2014.gdb.zip AtmosphericPrecipitationChemistry-WetDepositionMaps-SO4Deposition-1981_2014.gdb.zipZIP http://data.ec.gc.ca/data/air/monitor/monitoring-of-atmospheric-precipitation-chemistry/wet-deposition-maps/AtmosphericPrecipitationChemistry-WetDepositionMaps-SO4Deposition-1981_2014.gdb.zip NO3DESRI REST https://maps-cartes.ec.gc.ca/arcgis/rest/services/NO3D/MapServer/0 xSO4DESRI REST https://maps-cartes.ec.gc.ca/arcgis/rest/services/xSO4D/MapServer xSO4DESRI REST https://maps-cartes.ec.gc.ca/arcgis/rest/services/xSO4D/MapServer View ECCC Data Mart (English)HTML http://data.ec.gc.ca/data/air/monitor/monitoring-of-atmospheric-precipitation-chemistry/wet-deposition-maps View ECCC Data Mart (French)HTML http://data.ec.gc.ca/data/air/monitor/monitoring-of-atmospheric-precipitation-chemistry/wet-deposition-maps?lang=fr xSO4D WMSWMS https://maps-cartes.ec.gc.ca/arcgis/services/xSO4D/MapServer/WMSServer?request=GetCapabilities&service=WMS xSO4D WMSWMS https://maps-cartes.ec.gc.ca/arcgis/services/xSO4D/MapServer/WMSServer?request=GetCapabilities&service=WMS NO3D WMSWMS https://maps-cartes.ec.gc.ca/arcgis/services/NO3D/MapServer/WMSServer?request=GetCapabilities&service=WMS&layers=1&legend_format=image/png&feature_info_type=text/html NO3D WMSWMS https://maps-cartes.ec.gc.ca/arcgis/services/NO3D/MapServer/WMSServer?request=GetCapabilities&service=WMS&layers=1&legend_format=image/png&feature_info_type=text/html

Wet Deposition Maps

Patterns of wet deposition of the nitrate/sulfate/ammonium ion across eastern Canada and the United States are based on measurements of precipitation depth and nitrate/sulfate/ammonium concentrations in precipitation samples. These measurements were collected and quality controlled by their respective networks: in Canada, the federal Canadian Air and Precipitation Monitoring Network (CAPMoN) and provincial or territorial networks in Alberta, New Brunswick, the Northwest Territories, Nova Scotia, Ontario and Quebec. In the United States, wet deposition measurements were made by two coordinated networks: the National Atmospheric Deposition Program (NADP) / National Trends Network (NTN) and the NADP/Atmospheric Integrated Research Monitoring Network (AIRMoN).

Total annual deposition from each site was screened for completeness using the following criteria: (1) Precipitation amounts were recorded for >90% of the year and >60% of each quarter, and (2) a nitrate/sulfate/ammonium concentration was reported for >70% of the precipitation measured over the year and for >60% of each quarter. Only data from sites that had been designated as regionally representative were used in the mapping.

Annual deposition amounts were interpolated using ordinary kriging using ArcMap Geostatistical Analyst. The map is limited to the contiguous U.S. and southeastern Canada because outside that region, the interpolation error exceeds 30% due to the larger distances between stations.

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Resources

Resource Name Resource Type Format Language Links
NO3D Web Service ESRI REST English Access
AtmosphericPrecipitationChemistry-WetDepositionMaps-NO3Deposition-1981_2014.gdb.zip Dataset ZIP English Access
AtmosphericPrecipitationChemistry-WetDepositionMaps-SO4Deposition-1981_2014.gdb.zip Dataset ZIP English Access
NO3D Web Service ESRI REST French Access
xSO4D Web Service ESRI REST English Access
xSO4D Web Service ESRI REST French Access
View ECCC Data Mart (English) Web Service HTML English Access
View ECCC Data Mart (French) Web Service HTML French Access
xSO4D WMS Web Service WMS English Access
xSO4D WMS Web Service WMS French Access
NO3D WMS Web Service WMS English Access
NO3D WMS Web Service WMS French Access

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