Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.400 IF 3.400
  • IF 5-year value: 3.841 IF 5-year
    3.841
  • CiteScore value: 3.71 CiteScore
    3.71
  • SNIP value: 1.472 SNIP 1.472
  • IPP value: 3.57 IPP 3.57
  • SJR value: 1.770 SJR 1.770
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 70 Scimago H
    index 70
  • h5-index value: 49 h5-index 49
Discussion papers
https://doi.org/10.5194/amt-2019-488
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2019-488
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 03 Feb 2020

Submitted as: research article | 03 Feb 2020

Review status
This preprint is currently under review for the journal AMT.

In-flight calibration results of the TROPOMI payload on-board theSentinel-5 Precursor satellite

Antje Ludewig1, Quintus Kleipool1, Rolf Bartstra1,3, Robin Landzaat1,2, Jonatan Leloux1,2, Erwin Loots1, Peter Meijering1,2, Emiel van der Plas1, Nico Rozemeijer1,2, Frank Vonk1,2, and Pepijn Veefkind1 Antje Ludewig et al.
  • 1KNMI, Royal Netherlands Meteorological Institute, De Bilt, The Netherlands
  • 2TriOpSys B.V., Utrecht, The Netherlands
  • 3S&T Science and Technology B.V., Delft, The Netherlands

Abstract. After the launch of the Sentinel-5 Precursor satellite on 13 October 2017 its single payload, the Tropospheric Monitoring Instrument (TROPOMI), was commissioned during 6 months. In this time the instrument was tested and calibrated extensively. During this phase the geolocation calibration was validated using a dedicated measurement zoom mode. With the help of spacecraft manoeuvres the solar angle dependence of the irradiance radiometry was calibrated for both internal diffusers. This improved the results that were obtained on-ground significantly. Furthermore the orbital and long term stability was tested for electronic gains, offsets, non-linearity, the dark current and the output of the internal light sources. The CCD output gain of the UV, UVIS and NIR detectors shows drifts over time which can be corrected for in the L1b processor. In-flight measurements also revealed inconsistencies of the radiometric calibration and degradation of the UV spectrometer. Degradation is also detected for the internal solar diffusers. Since the start of the nominal operations (E2) phase in orbit 2818 on 30 April 2018, regularly scheduled calibration measurements on the eclipse side of the orbit are used for monitoring and updates to calibration key data. This article reports on the main results of the commissioning phase, the in-flight calibration and on the instrument's stability since launch. Insights from commissioning and in-flight monitoring led to updates to the Level 1b processor and its calibration key data. The updated processor is planned to be used for nominal processing from 2020 on.

Antje Ludewig et al.

Interactive discussion

Status: open (until 30 Mar 2020)
Status: open (until 30 Mar 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Antje Ludewig et al.

Antje Ludewig et al.

Viewed

Total article views: 115 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
88 27 0 115 2 0
  • HTML: 88
  • PDF: 27
  • XML: 0
  • Total: 115
  • BibTeX: 2
  • EndNote: 0
Views and downloads (calculated since 03 Feb 2020)
Cumulative views and downloads (calculated since 03 Feb 2020)

Viewed (geographical distribution)

Total article views: 68 (including HTML, PDF, and XML) Thereof 68 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 17 Feb 2020
Publications Copernicus
Download
Short summary
Since the launch of the Sentinel-5 Precursor satellite on 13 October 2017 its single payload, the Tropospheric Monitoring Instrument (TROPOMI) was tested and calibrated extensively. Changes due ageing of the instrument and new insights led to updates to the Level 1b processor and its calibration key data. This leads to improvements of the data quality. Regularly scheduled calibration measurements are used in the nominal operations phase (since 30 April 2018) to correct instrument degradation.
Since the launch of the Sentinel-5 Precursor satellite on 13 October 2017 its single payload,...
Citation