TAPIOWCA, short for long-Term Assessment, Proxies and Indicators of Ozone and Water vapour changes affecting Climate and Air quality, is a research project funded by BELSPO under the BRAIN-be 2.0 programme.

The primary objective of TAPIOWCA is to perform a comprehensive, integrated assessment of the present mean distribution, the interannual variability and the decadal-scale trends in tropospheric & stratospheric ozone and stratospheric water vapour observations by satellites. This will be achieved by improving the harmonisation of tropospheric ozone data records and by extending time series analysis techniques.

In doing so, the project partners will provide observation-based evidence for international scientific assessments by CEOS AC-VC and WGCV ACSG, TOAR-II, SPARC, WMO/UNEP and IPCC.