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-2019-496
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2019-496
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 06 Feb 2020

Submitted as: research article | 06 Feb 2020

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

The Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaigns

Alexis Merlaud1, Livio Belegante2, Daniel-Eduard Constantin3, Mirjam Den Hoed4, Andreas Carlos Meier5, Marc Allaart4, Magdalena Ardelean6, Maxim Arseni3, Tim Bösch5, Hugues Brenot1, Andreea Calcan6, Emmanuel Dekemper1, Sebastian Donner8, Steffen Dörner8, Carmelia Dragomir3, Lucian Georgescu3, Anca Nemuc2, Doina Nicolae2, Gaia Pinardi1, Andreas Richter5, Adrian Rosu3, Thomas Ruhtz7, Anja Schönhardt5, Dirk Schuettemeyer10, Reza Shaiganfar8, Kerstin Stebel9, Frederik Tack1, Sorin Nicolae Vâjâiac6, Jeni Vasilescu2, Jurgen Vanhamel1, Thomas Wagner8, and Michel Van Roozendael1 Alexis Merlaud et al.
  • 1Royal Belgian Institute for Space Aeronomie (BIRA-IASB), Avenue Circulaire 3, 1180 Brussels, Belgium
  • 2National Institute of R&D for Optoelectronics (INOE), Magurele, Street Atomistilor 409, Magurele 77125, Romania
  • 3"Dunarea de Jos" University of Galati, Faculty of Sciences and Environment, Str. Domneasca, Nr. 111, Galati 800008, Romania
  • 4Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands
  • 5Institute of Environmental Physics, University of Bremen (IUP-Bremen), Otto-Hahn-Allee 1, 28359 Bremen, Germany
  • 6National Institute for Aerospace Research "Elie Carafoli" (INCAS), Bd. Iuliu Maniu no. 220, Bucharest, Romania
  • 7Institute for Space Sciences, Free University of Berlin (FUB), Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin, Germany
  • 8Max-Planck-Institute for Chemistry (MPIC), Hahn-Meitner-Weg 1, 55128 Mainz, Germany
  • 9Norwegian Institute for Air Research (NILU), Instituttveien 18, 2007 Kjeller, Norway
  • 10European Space Agency (ESA-ESTEC), Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands

Abstract. The Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaigns took place in Romania in September 2014 and August 2015. They focused on two sites: the Bucharest urban area and the power plants in the Jiu Valley. Their main objectives were to test recently developed airborne observation systems dedicated to air quality studies and to verify the concept of such campaigns in support of the validation of spaceborne atmospheric missions such as TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P).

We show that tropospheric NO2 vertical column density (VCD) measurements using airborne mapping instruments are valuable for satellite validation. The signal to noise ratio of the airborne NO2 measurements is one order of magnitude higher than its spaceborne counterpart when the airborne measurements are averaged at the TROPOMI pixel scale. A significant source of comparison error appears to be the time variation of the NO2 VCDs during a flight, which we estimated at about 4 x 1015 molec cm-2 in the AROMAT conditions. Considering the random error of the TROPOMI tropospheric NO2 VCD (σ), the dynamic range of the NO2 VCDs field extends from detection limit up to 37σ (2.6 x 1016 molec cm-2) or 29σ (2 x 1016 molec cm-2) for Bucharest and the Jiu Valley, respectively. For the two areas, we simulate validation exercises of the TROPOMI tropospheric NO2 product using airborne measurements. These simulations indicate that we can closely approach the TROPOMI optimal target accuracy of 25 % by adding NO2 and aerosol profile information to the mapping data, which constrains the investigated accuracy within 28 %. In addition to NO2, we also measured significant amounts of SO2 in the Jiu Valley, as well as a hotspot of H2CO in the center of Bucharest. For these two species, we conclude that the best validation strategy would consist in deploying ground-based measurement systems at key locations which the AROMAT observations help identify.

Alexis Merlaud et al.

Interactive discussion

Status: open (until 02 Apr 2020)
Status: open (until 02 Apr 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

Alexis Merlaud et al.

Alexis Merlaud et al.

Viewed

Total article views: 266 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
197 67 2 266 20 1 0
  • HTML: 197
  • PDF: 67
  • XML: 2
  • Total: 266
  • Supplement: 20
  • BibTeX: 1
  • EndNote: 0
Views and downloads (calculated since 06 Feb 2020)
Cumulative views and downloads (calculated since 06 Feb 2020)

Viewed (geographical distribution)

Total article views: 230 (including HTML, PDF, and XML) Thereof 229 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 30 Mar 2020
Publications Copernicus
Download
Short summary
The AROMAT campaigns took place in Romania in 2014 and 2015. They aimed to test airborne observation systems dedicated to air quality studies and to verify the concept of such campaigns in support of the validation of space-borne atmospheric missions. We show that airborne measurements of NO2 can be valuable for the validation of air quality satellites. For H2CO and SO2, the validation should involve ground-based measurement systems at key locations that the AROMAT measurements help identify.
The AROMAT campaigns took place in Romania in 2014 and 2015. They aimed to test airborne...
Citation