Satellite maps ozone destroyer

Article Abstract:

The use of the satellite-borne Microwave Limb Sounder to detect ClO levels in the stratosphere of the Antarctic and Arctic regions is reported. Previous measurements by ground-based and aircraft means of ClO, which is implicated in the destruction of ozone the lower stratosphere, have shown that ClO levels over the Arctic region are similar to those of the Antarctic region. However, different meteorologic conditions have prevented the formation of an ozone hole over the Arctic region. The Microwave Limb Sounder confirmed the findings that ClO levels in the Arctic region are similar to those of the Antarctic.

Usage, Chlorine oxides, Radio meteorology

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Surface ozone depletion in Arctic spring sustained by bromine reactions on aerosols

Article Abstract:

An aqueous-phase chemical mechanism has been proposed for the natural production of the active, inorganic bromine that breaks down the surface ozone over the Arctic every spring. The mechanism changes the nonradical bromine species HBr, HOBr and BrNO3 into the ozone-destroying bromine radicals Br and BrO. The presence of high levels of sulphuric acid aerosols known to coincide with ozone depletion would enhance the ability of this mechanism to increase bromine concentrations.

Arctic regions, Bromine

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