Location of the catchments included in the Barents Project

Location of the catchments included in the Barents Project
Location of the catchments included in the Barents Project

Transect west–east across the survey area showing exchangeable Ca in the O-horizon of podzol soils in 1995 and from 2000 to 2001

Transect west–east across the survey area showing exchangeable Ca in the O-horizon of podzol soils in 1995 (Kola Ecogeochemistry Project) and from 2000 to 2001 (Barents Ecogeochemistry Project)
Transect west–east across the survey area showing exchangeable Ca in the O-horizon of podzol soils in 1995 and from 2000 to 2001

Cumulative distribution functions (CDF, %) of pH (water extraction)

Cumulative distribution functions (CDF, %) of pH (water extraction), exchangeable Ca, Mg, K, and Al concentrations and the exchangeable Al:(Ca+Mg+K+Na) ratio in the O-horizon in the ‘no visual damage’ [..]
Cumulative distribution functions (CDF, %) of pH (water extraction)

A comparison of the two west–east transects across the survey area in 1995

A comparison of the two west–east transects across the survey area in 1995, showing changes from east to west in (a) total Al (nitric acid) and exchangeable Al concentrations in the O-horizon; (b) [..]
A comparison of the two west–east transects across the survey area in 1995

Ammonium acetate extractable Ca and Mg in the O-horizon of soils

Ammonium acetate extractable Ca and Mg in the O-horizon of soils (x-axis) vs. their total concentrations (aqua regia extractable) in the C-horizon of soils and in moss in 1995
Ammonium acetate extractable Ca and Mg in the O-horizon of soils

Transect west–east across the survey area and through the industrial zone centered on Nikel and Zapolyarnyy in 1995

Transect west–east across the survey area and through the industrial zone centered on Nikel and Zapolyarnyy in 1995, showing (a) pH in a water extract of the O-horizon of podzol soils; (b) [..]
Transect west–east across the survey area and through the industrial zone centered on Nikel and Zapolyarnyy in 1995

Transect west–east across the survey area and through the industrial zone centered on Monchegorsk and Apatity in 1995

Transect west–east across the survey area and through the industrial zone centered on Monchegorsk and Apatity in 1995, showing: (a) pH in a water extract of the O-horizon of podzol soils; (b) [..]
Transect west–east across the survey area and through the industrial zone centered on Monchegorsk and Apatity in 1995

Transect south–north across the survey area near the western boundary in 1995

Transect south–north across the survey area near the western boundary in 1995, showing: (a) pH in a water extract of the O-horizon; (b) ammonium acetate extractable (pH 4.5) base cation concentrations [..]
Transect south–north across the survey area near the western boundary in 1995

The Kola Ecoregion survey area and major industrial centers

The Kola Ecoregion survey area and major industrial centers
The Kola Ecoregion survey area and major industrial centers

Impact of soot deposited onto snow and ice surfaces in the Arctic

Impact of soot deposited onto snow and ice surfaces in the Arctic. Polar ice reflects light from the sun back to space (a). As the ice begins to melt, less light is reflected and more is absorbed by [..]
Impact of soot deposited onto snow and ice surfaces in the Arctic

Monthly averaged aerosol optical depth anomalies at Barrow for March and April

Monthly averaged aerosol optical depth anomalies at Barrow (Alaska) for March and April. The anomalies are relative to a base of non-volcanic years. Data from 1992 and 1993 were removed due to [..]
Monthly averaged aerosol optical depth anomalies at Barrow for March and April

Monthly averaged light scattering and absorption at 550 nm by <10 μm aerosol at Barrow and black carbon concentrations at Alert

Monthly averaged light scattering and absorption at 550 nm by <10 μm aerosol at Barrow (Alaska) and black carbon concentrations at Alert (Canada)
Monthly averaged light scattering and absorption at 550 nm by <10 μm aerosol at Barrow and black carbon concentrations at Alert

Monthly averaged sulfate concentrations for March and April at eight arctic monitoring sites

Monthly averaged sulfate concentrations for March and April at eight arctic monitoring sites and Sen’s slope estimates for the long term (approximately 1980 through the available data) and short term [..]
Monthly averaged sulfate concentrations for March and April at eight arctic monitoring sites

Time series of monthly averaged particulate sulfate and nitrate concentrations at Alert and Barrow

Time series of monthly averaged particulate sulfate and nitrate concentrations at Alert (Canada) and Barrow (Alaska)
Time series of monthly averaged particulate sulfate and nitrate concentrations at Alert and Barrow

Time series of monthly averaged particulate sulfate concentrations at eight arctic monitoring sites

Time series of monthly averaged particulate sulfate concentrations at eight arctic monitoring sites
Time series of monthly averaged particulate sulfate concentrations at eight arctic monitoring sites



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