Recent Developments to the RAL Joint IASI+GOME-2 Ozone Profile Retrievals using TIR, UV and Visible Spectra
Miles, Georgina; Siddans, Richard; Latter, Barry; Waterfall, Alison; Kerridge, Brian
STFC Rutherford Appleton Laboratory, UNITED KINGDOM

We present results from recent developments of the RAL ozone profile optimal estimation retrieval scheme. The algorithm produces both a GOME-2 only and a joint IASI and GOME-2 profile product, both of which have sensitivity to tropospheric ozone. The GOME-1/GOME-2 product has been selected for the ESA Climate Change Initiative Ozone ECV nadir prototype product, for which data from 1995 onwards will be disseminated to the climate modelling community. Time-series and highlights from several years of the single and joint MetOp-A GOME-2 and IASI retrievals are presented, in addition to early results from the instruments aboard MetOp-B. We further present results of the introduction of measurements from the Chappuis (visible) ozone bands to add near-surface ozone information to the retrieval under certain atmospheric and surface conditions.