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Arctic atmospheric circulation

The mean circulation of the lower atmosphere during January and July as depicted by mean streamlines of the resultant winds
Arctic atmospheric circulation

Arctic air masses and atmospheric transport routes

The mean position of the Arctic air mass in winter (January) and summer (July), superimposed on the (summer value % (orange) - winter value % (blue)) frequency of major south-to-north transport routes [..]
Arctic air masses and atmospheric transport routes

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

Mean exposure to sulfur dioxide at Oulanka and Zeppelin

Mean exposure to sulfur dioxide at Oulanka and Zeppelin in relation to the direction of air masses arriving at the stations in the 1990s
Mean exposure to sulfur dioxide at Oulanka and Zeppelin

Mean concentration and exposure to nitrogen compounds at Zeppelin

Mean concentration and exposure to nitrogen compounds at Zeppelin in relation to the direction of air masses arriving at the station in the 1990s
Mean concentration and exposure to nitrogen compounds at Zeppelin

Arctic sea-level atmospheric pressure (July)

Mean atmospheric sea-level pressure (mb) in the Arctic in July
Arctic sea-level atmospheric pressure (July)

Precipitation in the Arctic

Distribution of precipitation (mm/y) in the Arctic
Precipitation in the Arctic

Cloud cover and precipitation in the Canadian High Arctic

Seasonal variation in a) cloud cover and precipitation occurrence and b) precipitation amount in the Canadian High Arctic, 1951-1980 norms
Cloud cover and precipitation in the Canadian High Arctic

Atmosphere-surface exchange

Schematic diagram of processes of atmosphere-surface exchange
Atmosphere-surface exchange

Precipitation rate measurements from Alert from January through April 1992 showing periods of no snow, periods of no snow measured due to wind events, and the relatively large quantities of precipitation on days during

Precipitation rate measurements from Alert from January through April 1992 showing periods of no snow, periods of no snow measured due to wind events, and the relatively large quantities of [..]
Precipitation rate measurements from Alert from January through April 1992 showing periods of no snow, periods of no snow measured due to wind events, and the relatively large quantities of precipitation on days during

Concentrations of sum-HCH in Arctic air

Concentrations of sum-HCH in Arctic air
Concentrations of sum-HCH in Arctic air

Source regions for HCH, chlordane, toxaphene, and PCBs in Arctic air based on 5-day back-trajectories for elevated air concentrations at Tagish, Alert, and Ny-Ålesund

Source regions for HCH, chlordane, toxaphene, and PCBs in Arctic air based on 5-day back-trajectories for elevated air concentrations at Tagish, Alert, and Ny-Ålesund
Source regions for HCH, chlordane, toxaphene, and PCBs in Arctic air based on 5-day back-trajectories for elevated air concentrations at Tagish, Alert, and Ny-Ålesund

Concentrations of sum-PCB in Arctic air (sum of CBs 28, 31, 52, 101, 105, 118, 138, 153, 156, 180)

Concentrations of sum-PCB in Arctic air (sum of CBs 28, 31, 52, 101, 105, 118, 138, 153, 156, 180)
Concentrations of sum-PCB in Arctic air (sum of CBs 28, 31, 52, 101, 105, 118, 138, 153, 156, 180)

Flux of HCH and sum-PCB (sum of 10 congeners) in precipitation at Heimaey Island, Iceland

Flux of HCH and sum-PCB (sum of 10 congeners) in precipitation at Heimaey Island, Iceland
Flux of HCH and sum-PCB (sum of 10 congeners) in precipitation at Heimaey Island, Iceland

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 reference year 1988

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 [..]
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 reference year 1988
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