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… . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5. Atmospheric chemistry, monitoring, and trends . . . . . . . . … . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6. Atmospheric concentrations and deposition . . . . . . . . . . … when, after the long Arctic winters, sunlight returns. Ozone is depleted at the same time, and it is believed that …

… or merthiolate. • Barometers - instruments for measuring atmospheric pres- sure used especially in forecast- ing the … tion cannot be achieved without significant reductions in atmospheric emissions leading to corresponding di- rect and … and Waste (Mercury, Persistent Organ- ic Pollutants, Ozone Depleting Substances, and the Strategic Approach to …