Artistic rendering of the evolution of total chlorine in the midlatitude stratosphere, 1975-2006. Warmer colors show higher amounts of total chlorine. Derived from Figure 1-10 (updated from Engel et al., 2002) of Chapter 1, Scientific Assessment of Ozone Depletion: 2006. Cover design layout by Debra Dailey-Fisher (NOAA Earth System Research Laboratory). Download the high resolution Executive Summary cover image.
Satellite image of the Antarctic ozone hole for 4 October 2001, from NASA (see Question Q11 of this publication). Cover design by Debra Dailey-Fisher (NOAA Earth System Research Laboratory). Download the high resolution Twenty Questions and Answers About the Ozone Layer: 2006 Update cover image.