North American circumpolar region showing schematically possible source and migration routes

North American circumpolar region showing schematically possible source and migration routes of three Arctic cultures and frequency of mtDNA subcluster in Arctic and North American populations.
North American circumpolar region showing schematically possible source and migration routes

Trends in weighted summer and winter sulfate concentrations in precipitation within the Arctic

Trends in weighted summer and winter sulfate concentrations in precipitation within the Arctic
Trends in weighted summer and winter sulfate concentrations in precipitation within the Arctic

Trends in weighted summer and winter nitrate concentrations in precipitation within the Arctic

Trends in weighted summer and winter nitrate concentrations in precipitation within the Arctic
Trends in weighted summer and winter nitrate concentrations in precipitation within the Arctic

Frequency distribution for monthly pH values in precipitation within the Russian Arctic for the Atlantic

Frequency distribution for monthly pH values in precipitation within the Russian Arctic for the Atlantic, Siberian, and Pacific sectors for 1990 to 2004
Frequency distribution for monthly pH values in precipitation within the Russian Arctic for the Atlantic

Annual average sulfate sulfur concentrations and pH in precipitation within the Russian Arctic

Annual average sulfate sulfur concentrations and pH in precipitation within the Russian Arctic at a heavily impacted site (Murmansk) and a background site (Padun) since 1991, and the correlation [..]
Annual average sulfate sulfur concentrations and pH in precipitation within the Russian Arctic

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 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

Location of Arctic indigenous peoples

Location of Arctic indigenous peoples
Location of Arctic indigenous peoples

Theoretical clear day UV dose to horizontal and vertical surfaces, for Arctic Finland

Theoretical clear day UV dose to horizontal and vertical surfaces, for Arctic Finland
Theoretical clear day UV dose to horizontal and vertical surfaces, for Arctic Finland

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

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

Black carbon potential source contributions

Black carbon potential source contributions from continents as a function of transport time to the Arctic, for the subset that also reaches a minimum arctic altitude below 1000 m, for winter and [..]
Black carbon potential source contributions

Human health study locations in Arctic Norway, Russia and Finland; red dots indicate the main communities studied under the AMAP monitoring programme

Human health study locations in Arctic Norway, Russia and Finland; red dots indicate the main communities studied under the AMAP monitoring programme
Human health study locations in Arctic Norway, Russia and Finland; red dots indicate the main communities studied under the AMAP monitoring programme

Map of Sweden showing locations mentioned in the text; Arctic areas comprise the two northernmost counties, Norrbotten and Västerbotten

Map of Sweden showing locations mentioned in the text; Arctic areas comprise the two northernmost counties, Norrbotten and Västerbotten
Map of Sweden showing locations mentioned in the text; Arctic areas comprise the two northernmost counties, Norrbotten and Västerbotten

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)

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



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