Trends in NOx and SO2 concentrations in air in various cities in the Russian Arctic
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Mean maternal plasma lipid concentrations of DDE and DDT; figures below the graph show the DDE/DDT ratios
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Elements involved in the evaluation and handling of risks from environmental contaminants
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Illustration of the role of UV radiation in the biogeochemical cycling of DOC
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Illustration of the role of UV radiation in various light-dependent processes Natural UV radiation impacts the numbers, distribution and activity of several aquatic ecosystem targets and thus, [..]
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Geometric mean levels of HCB, DDE and PCBs in cord blood of newborns in different Canadian population groups
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An example of a type 2 ozone anomaly, showing levels of ozone depletion relative to the long-term mean
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Average annual UV dose falling on vertical and horizontal surfaces as a function of latitude The solid lines represent the situation for the normal UV level with undisturbed ozone (prior to 1978)
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Time trends of mean methylmercury concentrations
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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)
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SMART model results for selected soil and lake output variables at Christmas lakes for the past 90 years and for three future scenarios assuming a 0%, 70% and 95% reduction of the present sulfur [..]
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MAGIC model results for the streamwater at Dalelva for the past 90 years and for three future scenarios assuming a 0%, 70%, and 95% reduction of the present sulfur deposition levels
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Snow cover over northern hemisphere lands between 1972 and 1996 for different seasons Values are determined from analyses of NOAA snow charts created using visible satellite imagery
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Monthly snow cover anomalies over northern hemispheric lands (including Greenland) between January 1972 and August 1995 Also shown are the 12-month running anomalies of hemispheric snow extent, [..]
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Schematic illustration of ecosystem carbon fluxes and nutrient circulation in the tundra Carbon and nutrient pathways are shown by dashed and continuous lines, respectively
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