Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations
<p>There are great expectations about the detection and the quantification of <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions using <span class="inline-formula">NO<sub>2</sub></span> tropospheri...
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Copernicus Publications
2025-06-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/25/6047/2025/acp-25-6047-2025.pdf |
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| author | A. Fortems-Cheiney A. Fortems-Cheiney G. Broquet E. Potier E. Potier A. Berchet I. Pison A. Martinez R. Plauchu R. Abeed A. Sicsik-Paré G. Dufour A. Coman D. Savas G. Siour H. Eskes H. A. C. Denier van der Gon S. N. C. Dellaert |
| author_facet | A. Fortems-Cheiney A. Fortems-Cheiney G. Broquet E. Potier E. Potier A. Berchet I. Pison A. Martinez R. Plauchu R. Abeed A. Sicsik-Paré G. Dufour A. Coman D. Savas G. Siour H. Eskes H. A. C. Denier van der Gon S. N. C. Dellaert |
| author_sort | A. Fortems-Cheiney |
| collection | DOAJ |
| description | <p>There are great expectations about the detection and the quantification of <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions using <span class="inline-formula">NO<sub>2</sub></span> tropospheric columns from satellite observations and inverse systems. This study assesses the potential of the OMI-QA4ECV and TROPOMI satellite observations to improve the knowledge of European <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions at the regional scale and to inform about the spatio-temporal variability of <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions in 2019 compared to 2005, at the resolution of 0.5° over Europe. We first characterize the level of consistency between retrievals from OMI-QA4ECV and from the more recent reprocessing of the TROPOMI data, called TROPOMI-RPRO-v02.04, and the implications of the possible inconsistencies for inversions. Furthermore, starting from European emission estimates from the TNO-GHGco-v3 inventory for the year 2005, regional inversions using the Community Inversion Framework coupled to the CHIMERE chemistry-transport model and assimilating satellite <span class="inline-formula">NO<sub>2</sub></span> tropospheric columns from OMI and TROPOMI have been performed to estimate the European annual and seasonal budgets for the year 2019. Both the OMI and TROPOMI inversions show decreases in European <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emission budgets in 2019 compared to 2005. Nevertheless, the magnitude of the reductions of the <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions is different with OMI and TROPOMI data, with decreases in EU-27 <span class="inline-formula">+</span> UK between 2005 and 2019 of 16 % and 45 %, respectively. A TROPOMI inversion giving more weight to the satellite data becomes consistent with the independent TNO-GHGco-v3 inventory for the year 2019, with annual budgets for EU-27 <span class="inline-formula">+</span> UK showing absolute relative difference of only 4 %. These TROPOMI inversions are therefore in agreement with the magnitude of the decline in <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions declared by countries, when aggregated at the European scale. However, our results – with OMI and TROPOMI data leading to different magnitudes of corrections on <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions – suggest that more observational constraints would be required to sharpen the European emission estimates.</p> |
| format | Article |
| id | doaj-art-3404fb750de64fda8ad04a413689ab2c |
| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-3404fb750de64fda8ad04a413689ab2c2025-08-20T03:31:12ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242025-06-01256047606810.5194/acp-25-6047-2025Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observationsA. Fortems-Cheiney0A. Fortems-Cheiney1G. Broquet2E. Potier3E. Potier4A. Berchet5I. Pison6A. Martinez7R. Plauchu8R. Abeed9A. Sicsik-Paré10G. Dufour11A. Coman12D. Savas13G. Siour14H. Eskes15H. A. C. Denier van der Gon16S. N. C. Dellaert17Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, Francenow at: Science Partners, Quai de Jemmapes, 75010 Paris, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, Francenow at: Science Partners, Quai de Jemmapes, 75010 Paris, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceLaboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, FranceUniversité Paris Cité and Univ Paris Est Créteil, CNRS, LISA, 75013 Paris, FranceUniv. Paris Est Créteil and Université Paris Cité, CNRS, LISA, 94010 Créteil, FranceUniversité Paris Cité and Univ Paris Est Créteil, CNRS, LISA, 75013 Paris, FranceUniv. Paris Est Créteil and Université Paris Cité, CNRS, LISA, 94010 Créteil, FranceRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsDepartment Air Quality and Emissions Research, TNO, P.O. Box 80015, 3508 TA Utrecht, the NetherlandsDepartment Air Quality and Emissions Research, TNO, P.O. Box 80015, 3508 TA Utrecht, the Netherlands<p>There are great expectations about the detection and the quantification of <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions using <span class="inline-formula">NO<sub>2</sub></span> tropospheric columns from satellite observations and inverse systems. This study assesses the potential of the OMI-QA4ECV and TROPOMI satellite observations to improve the knowledge of European <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions at the regional scale and to inform about the spatio-temporal variability of <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions in 2019 compared to 2005, at the resolution of 0.5° over Europe. We first characterize the level of consistency between retrievals from OMI-QA4ECV and from the more recent reprocessing of the TROPOMI data, called TROPOMI-RPRO-v02.04, and the implications of the possible inconsistencies for inversions. Furthermore, starting from European emission estimates from the TNO-GHGco-v3 inventory for the year 2005, regional inversions using the Community Inversion Framework coupled to the CHIMERE chemistry-transport model and assimilating satellite <span class="inline-formula">NO<sub>2</sub></span> tropospheric columns from OMI and TROPOMI have been performed to estimate the European annual and seasonal budgets for the year 2019. Both the OMI and TROPOMI inversions show decreases in European <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emission budgets in 2019 compared to 2005. Nevertheless, the magnitude of the reductions of the <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions is different with OMI and TROPOMI data, with decreases in EU-27 <span class="inline-formula">+</span> UK between 2005 and 2019 of 16 % and 45 %, respectively. A TROPOMI inversion giving more weight to the satellite data becomes consistent with the independent TNO-GHGco-v3 inventory for the year 2019, with annual budgets for EU-27 <span class="inline-formula">+</span> UK showing absolute relative difference of only 4 %. These TROPOMI inversions are therefore in agreement with the magnitude of the decline in <span class="inline-formula">NO<sub><i>x</i></sub></span> emissions declared by countries, when aggregated at the European scale. However, our results – with OMI and TROPOMI data leading to different magnitudes of corrections on <span class="inline-formula">NO<sub><i>x</i></sub></span> anthropogenic emissions – suggest that more observational constraints would be required to sharpen the European emission estimates.</p>https://acp.copernicus.org/articles/25/6047/2025/acp-25-6047-2025.pdf |
| spellingShingle | A. Fortems-Cheiney A. Fortems-Cheiney G. Broquet E. Potier E. Potier A. Berchet I. Pison A. Martinez R. Plauchu R. Abeed A. Sicsik-Paré G. Dufour A. Coman D. Savas G. Siour H. Eskes H. A. C. Denier van der Gon S. N. C. Dellaert Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations Atmospheric Chemistry and Physics |
| title | Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations |
| title_full | Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations |
| title_fullStr | Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations |
| title_full_unstemmed | Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations |
| title_short | Assessing the ability to quantify the decrease in NO<sub><i>x</i></sub> anthropogenic emissions in 2019 compared to 2005 using OMI and TROPOMI satellite observations |
| title_sort | assessing the ability to quantify the decrease in no sub i x i sub anthropogenic emissions in 2019 compared to 2005 using omi and tropomi satellite observations |
| url | https://acp.copernicus.org/articles/25/6047/2025/acp-25-6047-2025.pdf |
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