This article is from the Ozone Depletion: UV Radiation and its Effects FAQ, by Robert Parson email@example.com with numerous contributions by others.
A remark on references: they are neither representative nor
comprehensive. There are _hundreds_ of people working on these
problems. For the most part I have limited myself to papers that
are (1) widely available (if possible, _Science_ or _Nature_ rather
than archival journals such as _J. Geophys. Res._) and (2) directly
related to the "frequently asked questions". Readers who want to
see "who did what" should consult the review articles listed below.
or, if they can get them, the WMO reports which are extensively