Halogens and their role in polar boundary-layer ozone depletion

Halogens and their role in polar boundary-layer ozone depletion

During springtime in the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br) into reactive halogen species (e.g. Br atoms and BrO) that deplete ozone in the boundary layer to near zero levels. Since their discovery in the late 1980s, research on ozone depletion events (ODEs) has made great advances; however many key processes remain poorly understood. In this article ...

Halogens and polar boundary-layer ozone depletion

1 Geophysical Institute and Department of Chemistry, University of Alaska Fairbanks, Fairbanks, AK, 99775-6160, USA 2 School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK 3 National Institute of Water and Atmospheric Research, Private Bag 14–901, Wellington, New Zealand 4 British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK 5 McGill University...

Ozone Layer Depletion

Polar tropospheric ozone depletion in IGY

Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract The Royal Society expedition to Antarctica established a base at Halley Bay, in support of the International Geophysical Year of 1957–1958. Surface ozone was measured during 1958 only, using a prototype Brewer-Mast sond...

Simulation of polar ozone depletion: An update

We evaluate polar ozone depletion chemistry using the specified dynamics version of the Whole Atmosphere Community Climate Model for the year 2011. We find that total ozone depletion in both hemispheres is dependent on cold temperatures (below 192 K) and associated heterogeneous chemistry on polar stratospheric cloud particles. Reactions limited to warmer temperatures above 192 K, or on binary ...