Mean arctic age of air in the lowest 100 m of the atmosphere (winter)

Mean arctic age of air in the lowest 100 m of the atmosphere in January (winter)
Mean arctic age of air in the lowest 100 m of the atmosphere (winter)

Shipping routes, oil and gas regions, and fishing grounds in the Arctic

Shipping routes, oil and gas regions, and fishing grounds in the Arctic
Shipping routes, oil and gas regions, and fishing grounds in the Arctic

Projected total emissions of SOx-S and NOx-N between 1990 and 2020

Projected total emissions of SOx-S and NOx-N between 1990 and 2020
Projected total emissions of SOx-S and NOx-N between 1990 and 2020

Projected SOx-S emissions in 2020 for the CLE and MFR emissions scenarios

Projected SOx-S emissions in 2020 for the CLE and MFR emissions scenarios
Projected SOx-S emissions in 2020 for the CLE and MFR emissions scenarios

Estimated emissions of SOx-S and NOx-N in 2000

Estimated emissions of SOx-S and NOx-N in 2000
Estimated emissions of SOx-S and NOx-N in 2000

Trends in summer and winter nitrate concentrations in air within the Arctic

Trends in summer and winter nitrate concentrations in air within the Arctic
Trends in summer and winter nitrate concentrations in air within the Arctic

Frequency and variation in the direction of air masses

Frequency and variation in the direction of air masses arriving at Oulanka and Zeppelin over 4-year periods during the 1990s
Frequency and variation in the direction of air masses

Diversity indices (Shannon-Weaver means) for phytoplankton, zooplankton and zoobenthos in lakes and streams in the Murmansk region

Diversity indices (Shannon-Weaver means) for phytoplankton, zooplankton and zoobenthos in lakes and streams in the Murmansk region
Diversity indices (Shannon-Weaver means) for phytoplankton, zooplankton and zoobenthos in lakes and streams in the Murmansk region

Approximate forest damage zones in the vicinity of Monchegorsk and Nikel and the visible-damage and non-visible-damage zones on the Kola Peninsula and Finnish Lapland The inset shows coverage (%) of lichens (Hypogymnia physodes and Parmelia olivacea) on

Approximate forest damage zones in the vicinity of Monchegorsk and Nikel and the visible-damage and non-visible-damage zones on the Kola Peninsula and Finnish Lapland The inset shows coverage (%) of [..]
Approximate forest damage zones in the vicinity of Monchegorsk and Nikel and the visible-damage and non-visible-damage zones on the Kola Peninsula and Finnish Lapland The inset shows coverage (%) of lichens (Hypogymnia physodes and Parmelia olivacea) on

Average (15-month) and 24-h average maximum air concentrations of Ni, Cu and As measured at several stations in northern Norway near to major point sources on the Kola Peninsula

Average (15-month) and 24-h average maximum air concentrations of Ni, Cu and As measured at several stations in northern Norway near to major point sources on the Kola Peninsula
Average (15-month) and 24-h average maximum air concentrations of Ni, Cu and As measured at several stations in northern Norway near to major point sources on the Kola Peninsula

Median concentrations of sulfate, base cations, and nitrate in lakes of northern Fennoscandia and the Kola Peninsula

Median concentrations of sulfate, base cations, and nitrate in lakes of northern Fennoscandia and the Kola Peninsula
Median concentrations of sulfate, base cations, and nitrate in lakes of northern Fennoscandia and the Kola Peninsula

Sensitivity of Arctic ecosystems to acid deposition

Sensitivity of Arctic ecosystems to acid deposition
Sensitivity of Arctic ecosystems to acid deposition

Vegetation damage zones around Norilsk

Vegetation damage zones around Norilsk
Vegetation damage zones around Norilsk

Trends in summer and winter total sulfate concentrations in air within the Arctic

Trends in summer and winter total sulfate concentrations in air within the Arctic
Trends in summer and winter total sulfate concentrations in air within the Arctic

Acidity of snow cover across the Russian Arctic, 2001–2004

Acidity of snow cover across the Russian Arctic, 2001–2004
Acidity of snow cover across the Russian Arctic, 2001–2004



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