By B. Stonehouse
Arctic atmospheric pollutants is now an incredible overseas factor. This quantity offers the main authoritative evaluate of this more and more vital topic for an viewers of either scientists and directors eager about around the globe, in addition to polar, toxins difficulties. Arctic pollution is an edited choice of papers, first awarded at a convention helo because the Scott Polar examine Institute in Cambridge in 1985. construction on foundations proven at prior conferences, this quantity examines the matter of Arctic pollution in an built-in, multidisciplinary type, with contributions from best gurus in chemistry, ecology, climatology and epidemiology. To chemists, physicists and climatologists, it offers clinical difficulties. Ecologists are all in favour of environmental threats; scientific researchers with strength threats to human future health. overseas legal professionals and directors are keen on the felony implications of pollution transferred throughout continents. total hangs the most important query; can man-made pollutants have an effect on the fragile power stability of the Arctic, and precipitate significant climatic swap world wide?
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A snowpack survey on Spitsbergen in spring 1983 (Semb and others 1984) yielded mean concentrations (jicq/l) in the top 30 cm of H+, 12; NH 4 + and NO 3 ", < 1; non-sea salt SO4=, 12. 9, most of the acidity being associated with the SO4= ion. A snowpack chemistry survey in the Northwest Territories of Canada in March 1984 (Shewchuk 1985) at sites on the pre-Cambrian shield remote from calcareous soils, yielded H + , NH 4 + , NO3~ and SO4= concentrations in the range 2-10, 1-2, 5-7, and 7-18 /^eq/1 respectively.
BLANCHET ABSTRACT. This paper reviews aspects of Swedish arctic aerosol research, including aerosol particle size distribution and composition variability, and how the aerosol influences arctic climate. Possible reasons are discussed for large variations in winter and summer measurements of physical and chemical aerosol properties. Particle size distribution studies on formation, transformation and removal processes of the arctic aerosol indicate that the accumulation mode of the aerosol is narrow, with small median diameter compared to midlatitude aerosols; sulfate is the massdominant component.
Flights over Greenland, August 1973. ground-based fieldwork in northern Greenland in summer 1974 (Flyger and Heidam 1978). Flights of 1973 appear in Figure 1 and resulting measurements of particles in Figure 2. Measurements of particle concentration yielded the most interesting results, in particular of submicron Aitken particles: whereas concentrations of Aitken nuclei around 200 cm"3 were expected and observed, rapid excursions to sizes close to 104 cm"3 often occurred (Figure 2), in close relation with a distinct yellow-brownish haze layer observed throughout the flights.
Arctic Air Pollution by B. Stonehouse