In the Climate Observations division we study the global and regional
atmospheric composition using satellite observations of trace gases, aerosols
and clouds. The observations contribute to monitoring and research of Climate,
Ozone, and Air Quality. The main satellite instruments used in our division are
OMI, GOME, GOME2, SCIAMACHY and SEVIRI. We develop calibration and retrieval
algorithms for these instruments, and process and distribute the satellite data
to users, e.g. via TEMIS, in collaboration with international partners. To
validate the satellite observations and to provide local monitoring we also
operate several ground-based instruments, like the Brewer, the ozone sonde and
the NO2 sonde. Our division has the Principal Investigatorship for the
Dutch-Finnish instrument OMI, launched in 2004 on NASA's EOS-Aura satellite,
and for the Dutch-ESA instrument TROPOMI, to be launched in 2014/15 on ESA's
Sentinel-5 Precursor satellite.
A thirty year time series of the ozone hole (left) and a global air
pollution map of NO2 (right).
2014-03-31: Ozone ProfilE Retrieval Algorithm (OPERA) for nadir-looking satellite instruments in the UV-VIS
For the retrieval of the vertical distribution of ozone in the atmosphere the Ozone ProfilE Retrieval Algorithm (OPERA) has been further developed. The new version (1.26) of OPERA is capable of retrieving ozone profiles from UV–VIS observations of most nadir-looking satellite instruments like GOME, SCIAMACHY, OMI and GOME-2.Read more...
2014-02-25: Retrieving Hurricane Wind Speeds using Cross Polarization C-band measurements
Hurricane-force wind speeds can have a large societal impact and in the following paper microwave C-band cross-polarized (VH) signals are investigated to assess if they can be used to derive extreme wind speed conditions.Read more...
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2013-12-13: Regional nitrogen oxides emission trends in East Asia observed from space
Due to changing economic activity, emissions of air pollutants in East Asia are changing rapidly in space and time. Monthly emission estimates of nitrogen oxides (NOx) derived from satellite observations provide valuable insight into the evolution of human activity on a regional scale.Read more...