(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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Diversity indices (Shannon-Weaver means) for phytoplankton, zooplankton and zoobenthos in lakes and streams in the Murmansk region
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The time series of light scattering (?sp) and optical depth (?) at 500 nm at Barrow, Alaska
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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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Concentration (pg/g dw) profiles for octachlorodioxin (OCDD) and total PCDD/Fs in dated sediment cores from Arctic Canada and Finland Sum-PCDD/Fs = sum of 2,3,7,8-substituted tetra- to octachloro D/Fs [..]
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Averaged upper (3000 m) air concentrations of Pb in winter (December-February) and summer (June-August) as modeled by the updated (1996) hemispheric EMEP transport model in a simulation for the [..]
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Lead deposition as modeled by the updated (1996) hemispheric EMEP transport model in a simulation for the reference year 1988
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Spatial trends in the net flux from reindeer meat in different Arctic areas, for the first year after an assumed uniform deposition of 100 kBq/m2
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Estimated ground deposition of nuclear weapons fallout of 137Cs based on precipitation data, decay corrected to 1995
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Compartment model used to assess doses from releases of radioactive materials to the atmosphere from nuclear testing
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Mass transport pathways considered in the Coastal Zone Oil Spill Model (COZOIL), developed to simulate dynamic transport and weathering of oil on US Arctic coasts
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An example of a positive feedback loop Warming leads to a decrease in sea ice cover which in turn leads to a decrease in albedo over the ocean, the result of which is further warming and further [..]
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The hydrologic balance in the Arctic is highly dynamic on the seasonal time scale with large and rapid ice melts in the spring On land, this ice and snow melting results in large rapid floods and [..]
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(a) Trajectories of five satellite-tracked buoys launched in Mackenzie Bay, Canada, and (b) results of 30-day trajectories of oil launched from five hypothetical spill locations in the Beaufort Sea
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