(a) Yearly average sulfur dioxide air concentration measurements in the Arctic, (b) Yearly average sulfate air concentration measurements in the Arctic

(a) Yearly average sulfur dioxide air concentration measurements in the Arctic, (b) Yearly average sulfate air concentration measurements in the Arctic
(a) Yearly average sulfur dioxide air concentration measurements in the Arctic, (b) Yearly average sulfate air concentration measurements in the Arctic

Emission rates of sulfur dioxide from Nikel together with annual average SO2 air concentrations measured at two sites in Norway (1978-1992)

Emission rates of sulfur dioxide from Nikel together with annual average SO2 air concentrations measured at two sites in Norway (1978-1992)
Emission rates of sulfur dioxide from Nikel together with annual average SO2 air concentrations measured at two sites in Norway (1978-1992)

Variation of the nitrate to non-seasalt (nss) sulfate equivalent ratio in precipitation at Norwegian recording stations based on measurements between August 1982 and July 1984

Variation of the nitrate to non-seasalt (nss) sulfate equivalent ratio in precipitation at Norwegian recording stations based on measurements between August 1982 and July 1984
Variation of the nitrate to non-seasalt (nss) sulfate equivalent ratio in precipitation at Norwegian recording stations based on measurements between August 1982 and July 1984

Concentrations of (a) sulfate and (b) nitrate in snow

Concentrations of (a) sulfate and (b) nitrate in snow
Concentrations of (a) sulfate and (b) nitrate in snow

Historical records of a) NO3- and b) SO42- concentrations from the Greenland icecap at Dye 3 c) A comparison of trends in the average SO42- and SO42- plus NO3- concentrations at Dye 3 in Greenland and in the annual mean H+ concentration from Agassiz ice

Historical records of a) NO3- and b) SO42- concentrations from the Greenland icecap at Dye 3 c) A comparison of trends in the average SO42- and SO42- plus NO3- concentrations at Dye 3 in Greenland [..]
Historical records of a) NO3- and b) SO42- concentrations from the Greenland icecap at Dye 3 c) A comparison of trends in the average SO42- and SO42- plus NO3- concentrations at Dye 3 in Greenland and in the annual mean H+ concentration from Agassiz ice

Scatterplots for comparisons between the average concentrations of SO2 and SO4 in air from October 1990 to December 1993 as monitored by the European Monitoring and Evaluation Programme (EMEP) and calculated by Christensen (1996)

Scatterplots for comparisons between the average concentrations of SO2 and SO4 in air from October 1990 to December 1993 as monitored by the European Monitoring and Evaluation Programme (EMEP) and [..]
Scatterplots for comparisons between the average concentrations of SO2 and SO4 in air from October 1990 to December 1993 as monitored by the European Monitoring and Evaluation Programme (EMEP) and calculated by Christensen (1996)

Calculated concentrations of SO2 and SO42- compared with measurements at Station Nord in northeastern Greenland

Calculated concentrations of SO2 and SO42- compared with measurements at Station Nord in northeastern Greenland
Calculated concentrations of SO2 and SO42- compared with measurements at Station Nord in northeastern Greenland

The predicted (1988) average surface air sulfate concentrations in the Arctic

The predicted (1988) average surface air sulfate concentrations in the Arctic
The predicted (1988) average surface air sulfate concentrations in the Arctic

The predicted (1988) average surface air sulfur dioxide concentrations in the Arctic

The predicted (1988) average surface air sulfur dioxide concentrations in the Arctic
The predicted (1988) average surface air sulfur dioxide concentrations in the Arctic

(a) Vertical distribution of SOx (SO2 + SO42-) concentrations averaged over the area north of 75°N, and (b) contributions from the different sources

(a) Vertical distribution of SOx (SO2 + SO42-) concentrations averaged over the area north of 75°N, and (b) contributions from the different sources
(a) Vertical distribution of SOx (SO2 + SO42-) concentrations averaged over the area north of 75°N, and (b) contributions from the different sources

Model calculations of ground level yearly average sulfur dioxide air concentration on the Kola Peninsula

Model calculations of ground level yearly average sulfur dioxide air concentration on the Kola Peninsula
Model calculations of ground level yearly average sulfur dioxide air concentration on the Kola Peninsula

Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America

Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America
Summer and winter visibility observations (for relative humidities less than 80%) for the period 1951 to 1993 in North America

The time series of light scattering (?sp) and optical depth (?) at 500 nm at Barrow, Alaska

The time series of light scattering (?sp) and optical depth (?) at 500 nm at Barrow, Alaska
The time series of light scattering (?sp) and optical depth (?) at 500 nm at Barrow, Alaska

Model calculations of total (wet and dry) deposition estimates of sulfur for 1988

Model calculations of total (wet and dry) deposition estimates of sulfur for 1988
Model calculations of total (wet and dry) deposition estimates of sulfur for 1988

Vertical distribution of Arctic haze in summer, winter, and the whole year Sulfur air concentrations and relative source-contribution (%) for different heights above the ground are shown The concentrations are averages over the Arctic area north of 70°N

Vertical distribution of Arctic haze in summer, winter, and the whole year Sulfur air concentrations and relative source-contribution (%) for different heights above the ground are shown The [..]
Vertical distribution of Arctic haze in summer, winter, and the whole year Sulfur air concentrations and relative source-contribution (%) for different heights above the ground are shown The concentrations are averages over the Arctic area north of 70°N



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