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Illustration of the concept of a) the 'zone of influence' through major contaminant pathways from a major source region, and b) the 'contaminant focussing zone' resulting from the convergence of pathways carrying contaminants from a variety of sourcesIllustration of the concept of a) the 'zone of influence' through major contaminant pathways from a major source region, and b) the 'contaminant focussing zone' resulting from the convergence of [..] |
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(a) Critical deposition of sulfur, and (b) its exceedance, in forest soils of northern Europe and Russia (5th percentile of the calculation points in each EMEP grid cell)(a) Critical deposition of sulfur, and (b) its exceedance, in forest soils of northern Europe and Russia (5th percentile of the calculation points in each EMEP grid cell) |
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(a) Critical loads of acidity expressed as sulfur (5th percentile presented for each grid) for lakes in northern Fennoscandia and surface waters on Svalbard, and (b) their exceedance (95th percentile)(a) Critical loads of acidity expressed as sulfur (5th percentile presented for each grid) for lakes in northern Fennoscandia and surface waters on Svalbard, and (b) their exceedance (95th percentile) |
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Distribution of organochlorine contaminants (OCs) in Arctic air, snow, seawater, and the marine mammals food chain Data for the six major classes of OCs are plotted for each compartment or species as the percent ofDistribution of organochlorine contaminants (OCs) in Arctic air, snow, seawater, and the marine mammals food chain Data for the six major classes of OCs are plotted for each compartment or species as [..] |
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Concentrations of sum-HCH in Arctic airConcentrations of sum-HCH in Arctic air |
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Source regions for HCH, chlordane, toxaphene, and PCBs in Arctic air based on 5-day back-trajectories for elevated air concentrations at Tagish, Alert, and Ny-ÅlesundSource regions for HCH, chlordane, toxaphene, and PCBs in Arctic air based on 5-day back-trajectories for elevated air concentrations at Tagish, Alert, and Ny-Ålesund |
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Concentrations of sum-PCB in Arctic air (sum of CBs 28, 31, 52, 101, 105, 118, 138, 153, 156, 180)Concentrations of sum-PCB in Arctic air (sum of CBs 28, 31, 52, 101, 105, 118, 138, 153, 156, 180) |
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Arctic sea-level atmospheric pressure (July)Mean atmospheric sea-level pressure (mb) in the Arctic in July |
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Precipitation in the ArcticDistribution of precipitation (mm/y) in the Arctic |
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Major pathways of contaminants into and within the Arctic environmentA multi-compartment schematic diagram of the major pathways of contaminants into and within the Arctic environment |
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Arctic atmospheric circulationThe mean circulation of the lower atmosphere during January and July as depicted by mean streamlines of the resultant winds |
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Contaminant emissions, transport and deposition in the ArcticAn illustration of the interplay between a) contaminant emissions distribution for sulfur dioxide and b) frequency of atmospheric south-to-north transport, yielding c) a net annual input of sulfur to [..] |
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Arctic air masses and atmospheric transport routesThe mean position of the Arctic air mass in winter (January) and summer (July), superimposed on the (summer value % (orange) - winter value % (blue)) frequency of major south-to-north transport routes [..] |
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Cloud cover and precipitation in the Canadian High ArcticSeasonal variation in a) cloud cover and precipitation occurrence and b) precipitation amount in the Canadian High Arctic, 1951-1980 norms |
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Atmosphere-surface exchangeSchematic diagram of processes of atmosphere-surface exchange |
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