S5P/TROPOMI: The first year in orbit

Joris Pepijn Veefkind, Ilse Aben, Angelika Dehn, Quintus Kleipool, Jochen Landgraf, Diego G. Loyola, Andreas Richter, Michel van Roozendael, Pieternel Felicitas Levelt

Research output: Contribution to conferenceAbstractScientific

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On 13 October 2017 the European Sentinel 5 Precursor was successfully launched, with on board the TROPOMI (TROPOspheric Monitoring Instrument). TROPOMI is an imaging spectrometer developed by The Netherlands and ESA for monitoring the atmospheric composition, for air quality climate and ozone layer monitoring. The launch of TROPOMI marks the start of operational atmospheric composition measurements from space within the European Copernicus programme, the largest Earth observation programme in the world.
After one month of instrument checkout, the first light of TROPOMI was received in November 2017. During the commissioning phase the TROPOMI instrument settings were optimized. This included an increase in the spatial sampling from 7x7 to 3.5x7 km2(across track x along track), for most of the TROPOMI spectral bands.

The S5P commissioning phase was completed half a year after launch and on 30 April 2018 the routine operations were started. The first batch of data products was publicly released on 11 July 2018. By the time of the AGU fall meeting, almost all the data products must have been released.

TROPOMI has provided very exciting results during its first year in orbit. Very remarkable are the plumes of short-lived gases like NO2, which can extend several tens of kilometers from the source. These plumes were predicted by air quality models; however it requires the spatial resolution of TROPOMI to see them from space. Also, the CO maps have attracted a lot of attention. Because of the high sensitivity for the entire vertical column, both the sources as well as the transport of CO are clearly visible in the TROPOMI data.

The high spatial resolution of the TROPOMI data also poses new challenges. More than for the previous satellite sensors, the need for accurate modelling of the surface reflectance becomes clear. Also, the 3D effects of clouds are now more prominent. All these aspects are also important for the upcoming geostationary missions within the CEOS air quality constellation.

In this presentation an overview will be given of the status of the mission, including the in-orbit calibration and the data products. Specific results will be highlighted that illustrate the new capabilities of TROPOMI and also the challenges that need to be addressed in future updates of the data products.
Original languageEnglish
Number of pages1
Publication statusPublished - 2018
EventAGU Fall Meeting 2018 - Washington, United States
Duration: 10 Dec 201814 Dec 2018
Conference number: 100


ConferenceAGU Fall Meeting 2018
Abbreviated titleAGU 100
CountryUnited States
Internet address

Bibliographical note

Abstract A51A-01 presented at 2018 Fall Meeting, AGU, Washington, D.C., 10-14 Dec. Session: A51A Advances in an Integrated Global Observing System for Air Quality I


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