ACOM Seminar: Pieternel Levelt


Title: First exciting new measurements of the recently launched TROPOMI instrument on Coperrnicus sentinel 5 precursor

Presenter: Pieternel Levelt, Head R&D Satellite Observations Department, KNMI 
Professor TU Delft, OMI & TROPOMI, The Netherlands

Abstract: On 13 October 2017 the TROPOMI instrument on board the Copernicus Sentinel 5 Precursor (S5P) satellite, the first of the European Sentinel satellites dedicated to monitoring of atmospheric composition, was launched. The mission objectives of TROPOMI/S5P are to globally monitor air quality, climate and the ozone layer in the time period between 2017 and 2023. The TROPOMI instrument is performing beyond expectation, showing amongst others air pollution plumes with unprecedented spatial resolution.  In this seminar an overview of the exciting new measurements will be shown.

The single payload of the S5P mission is TROPOspheric Monitoring Instrument (TROPOMI), which has been developed by The Netherlands in cooperation with the European Space Agency (ESA). TROPOMI is a nadir viewing shortwave spectrometer that measures in the UV-visible wavelength range (270-500 nm), the near infrared (710-770 nm) and the shortwave infrared (2314-2382 nm). A major step forward of TROPOMI compared to its predecessors OMI (Ozone Monitoring Instrument) and SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) is the  spatial resolution. For most of the UV-visible bands TROPOMI  has a spatial resolution at nadir of 3.5x7 km2 (12 times better than OMI) and 7x7km2 for the shortwave 
infrared, while maintaining or even improving the signal-to-noise per 
ground pixel. The high spatial resolution is combined with a wide 
swath that allows for  daily global coverage. The TROPOMI/S5P 
geophysical (Level 2)  operational data products include nitrogen 
dioxide, carbon monoxide, ozone (total column, tropospheric column 
& profile), methane, sulfur dioxide, formaldehyde and aerosol and 
cloud parameters. The first 6 months of the mission are used for special  observations to 
commission the satellite and the ground processing  systems; the 
operational phase will start in the second half of 2018.

In this seminar, an overview of the TROPOMI mission and 
results obtained early in the mission will be shown, as well as first 
aircraft measurements of our new follow-on satellite instrumentation, 
TROPOLITE, that is designed to fly on small satellites. With this 
instrument we envisage to improve emission monitoring of megacities 
to the < 1 x 1 km2 spatial resolution level. in the late spring and early 
summer of 2017.

Monday, March 19, 2018
Refreshments 3:15pm, Seminar 3:30pm 

NCAR Foothills Laboratory - FL2-1022, Large Auditorium
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Announcement Timing: 
March 14, 2018 to March 19, 2018
Calendar Timing: 
Monday, March 19, 2018 - 3:30pm to 4:30pm