Speaker
Description
Creating homogenized long-term ozone datasets using profile data by limb-viewing measurements from European and ESA Third Party satellite Missions is one of the objectives of the ESA Climate Change Initiative (Ozone-CCI) project.
In the framework of Ozone-CCI, several datasets of ozone profiles are created. The datasets from individual instruments are collected in the user-friendly HARMonized dataset of OZone profiles (HARMOZ).
For trend analyses, two long-term merged datasets of ozone profiles have been created. One is the SAGE-CCI-OMPS+ climate data record of monthly zonal mean ozone profiles. This dataset covers the stratosphere and combines measurements by nine limb and occultation satellite instruments – SAGE II, OSIRIS, MIPAS, SCIAMACHY, GOMOS, ACE-FTS, OMPS-LP, POAM III, and SAGE III/ISS, from 1984 to present. Another dataset is the MErged GRIdded Dataset of Ozone Profiles (MEGRIDOP) with a resolved longitudinal structure, which covers the period from late 2001 to the present. MEGRIDOP is derived from data by OSIRIS, MIPAS, SCIAMACHY, GOMOS, MLS, and OMPS-LP; it contains monthly mean ozone profiles in the altitude range from 10 to 50 km in bins of 10° latitude x 20° longitude. SAGE-CCI-OMPS+ and MEGRIDOP have been actively used in various assessments of ozone trends, including their regional and seasonal dependence.
We are currently working on a new merged daily gap-free 1° x 1° dataset of stratospheric ozone profiles (HIRES-LIMB), which is created from ozone data by OSIRIS, MIPAS, SCIAMACHY, GOMOS, MLS, OMPS-LP, SAGE III/ISS, and ACE-FTS using data homogenization and kriging-type interpolation.
In the presentation, we will show the obtained results, including updated analyses of stratospheric ozone trends.
