An OSSE to Study the Impact of Sentinel S4, S5P and S5 Spaceborne Observations on Air Quality Data Assimilation Systems

Tuesday, 15 December 2015: 10:35
3006 (Moscone West)
Henk Eskes1, Pepijn Veefkind1, Jason E Williams2, Albert Oude Nijhuis2, Johan de Haan2, Jean-Luc Attié3, Rachid Abida4, Philippe Ricaud3, Laaziz El Amraoui3, Renske Timmermans5, Arjo Segers5, Jukka Kujanpää6, Johanna Tamminen6, William A Lahoz7, Dirk Schuettemeyer8 and Ben Veihelmann9, (1)Royal Netherlands Meteorological Institute, De Bilt, Netherlands, (2)Royal Netherlands Meteorological Institute, Earth Observations, De Bilt, Netherlands, (3)Météo-France, Toulouse Cedex 01, France, (4)Météo-France Toulouse, Toulouse Cedex 01, France, (5)Netherlands Organization for Applied Scientific Research, Utrecht, Netherlands, (6)Finnish Meteorological Institute, Helsinki, Finland, (7)Norwegian Institute for Air Research, Kjeller, Norway, (8)European Space Research and Technology Centre, Mission Science Division, Noordwijk, Netherlands, (9)European Space Agency, Noordwijk, Netherlands
ISOTROP (Impact of Spaceborne Observations on Tropospheric Composition Analysis and Forecast) is an ESA funded OSSE study. It's aim is to quantify the impact of the European Sentinel 4 (GEO) and 5 (LEO) measurements of ozone, CO, NO2 and HCHO to better constrain pollutant concentrations and precursor emissions that influence air quality. The project is based on a cross-OSSE approach which involves two independent air quality models. Each of the models generated the nature run for the other model, used subsequently in two linked OSSE studies. The models involved are MOCAGE, and the air quality model LOTOS-EUROS combined with the global TM5 chemistry-transport model. The work is based on state-of-the-art synthetic observations and their error characteristics derived by the KNMI and FMI teams involved in the TROPOMI retrieval algorithm development. In our contribution we will discuss the ISOTROP OSSE setup, synthetic observations and impact of the sentinel observations on high-resolution (7km) air quality analyses for Europe.