Polar tropospheric ozone depletion events observed in the International Geophysical Year of 1958

Polar tropospheric ozone depletion events observed in the International Geophysical Year of 1958

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 sonde. The envelope of maximum ozone was an annual cycle from 10 ppbv in January to 22 ppbv in August. These values are 35% less at the start of the year and 15% less at the end than...

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 ...

A study of polar ozone depletion

A study of polar ozone depletion based on sequential assimilation of satellite data from the ENVISAT/MIPAS and Odin/SMR instruments J. D. Rösevall, D. P. Murtagh, J. Urban, and A. K. Jones Department of Radio & Space Science, Chalmers Univ. of Technology, Göteborg, Sweden Received: 3 July 2006 – Accepted: 9 October 2006 – Published: 10 October 2006 Correspondence to: J. D. Rösevall (rosevall@rs...

Simple measures of polar ozone depletion