Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data
<p>We present a new tropospheric ozone dataset based on TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P) total ozone measurements combined with stratospheric ozone data from the Belgian Assimilation System for Chemical ObsErvations (BASCOE) constrained by assimilating oz...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-10-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/15/5563/2022/amt-15-5563-2022.pdf |
| _version_ | 1811205435057766400 |
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| author | K.-P. Heue K.-P. Heue D. Loyola F. Romahn W. Zimmer S. Chabrillat Q. Errera J. Ziemke N. Kramarova |
| author_facet | K.-P. Heue K.-P. Heue D. Loyola F. Romahn W. Zimmer S. Chabrillat Q. Errera J. Ziemke N. Kramarova |
| author_sort | K.-P. Heue |
| collection | DOAJ |
| description | <p>We present a new tropospheric ozone dataset based on TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P) total ozone measurements combined with stratospheric ozone data from the Belgian Assimilation System for Chemical ObsErvations (BASCOE) constrained by assimilating ozone observations from the Microwave Limb Sounder (MLS). The BASCOE stratospheric data are interpolated to the S5P observations and subtracted from the TROPOMI total ozone data. The difference is equal to the tropospheric ozone residual column from the surface up to the tropopause. The tropospheric ozone columns are retrieved at the full spatial resolution of the TROPOMI sensor (<span class="inline-formula">5.5×3.5</span> km<span class="inline-formula"><sup>2</sup></span>) with daily global coverage.</p>
<p>Compared to the Ozone Mapping and Profiler Suite Modern-Era Retrospective analysis for Research and Applications 2 (OMPS-MERRA-2) data, a global mean positive bias of 3.3 <span class="inline-formula">DU</span> is found for the analysed period April 2018 to June 2020. A small negative bias of about <span class="inline-formula">−0.91</span> <span class="inline-formula">DU</span> is observed in the tropics relative to the operational TROPOMI tropical tropospheric data based on the convective cloud differential (CCD) algorithm throughout the same period.
The new tropospheric ozone data (S5P-BASCOE) are compared to a set of globally distributed ozonesonde data integrated up to the tropopause level. We found 2254 comparisons with cloud-free TROPOMI observations within 25 <span class="inline-formula">km</span> of the stations. In the global mean, S5P-BASCOE deviates by 2.6 <span class="inline-formula">DU</span> from the integrated ozonesondes. Depending on the latitude the S5P-BASCOE deviate from the sondes and between <span class="inline-formula">−4.8</span> and 7.9 <span class="inline-formula">DU</span>, indicating a good agreement. However, some exceptional larger positive deviations up to 12 <span class="inline-formula">DU</span> are found, especially in the northern polar regions (north of 70<span class="inline-formula"><sup>∘</sup></span>). The monthly mean tropospheric column and time series for selected areas showed the expected spatial and temporal pattern, such as the wave one structure in the tropics or the seasonal cycle, including a summer maximum, in the mid-latitudes.</p> |
| first_indexed | 2024-04-12T03:31:27Z |
| format | Article |
| id | doaj.art-bca2ff42c484469785679a08b64194da |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-04-12T03:31:27Z |
| publishDate | 2022-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-bca2ff42c484469785679a08b64194da2022-12-22T03:49:32ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482022-10-01155563557910.5194/amt-15-5563-2022Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated dataK.-P. Heue0K.-P. Heue1D. Loyola2F. Romahn3W. Zimmer4S. Chabrillat5Q. Errera6J. Ziemke7N. Kramarova8Institut für Methodik der Fernerkundung am Deutschen Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyTechnische Universität München (TUM), Munich, GermanyInstitut für Methodik der Fernerkundung am Deutschen Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyInstitut für Methodik der Fernerkundung am Deutschen Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyInstitut für Methodik der Fernerkundung am Deutschen Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, GermanyRoyal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumRoyal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, BelgiumNASA Goddard Space Flight Center (GSFC), Greenbelt, Maryland, USANASA Goddard Space Flight Center (GSFC), Greenbelt, Maryland, USA<p>We present a new tropospheric ozone dataset based on TROPOspheric Monitoring Instrument (TROPOMI)/Sentinel-5 Precursor (S5P) total ozone measurements combined with stratospheric ozone data from the Belgian Assimilation System for Chemical ObsErvations (BASCOE) constrained by assimilating ozone observations from the Microwave Limb Sounder (MLS). The BASCOE stratospheric data are interpolated to the S5P observations and subtracted from the TROPOMI total ozone data. The difference is equal to the tropospheric ozone residual column from the surface up to the tropopause. The tropospheric ozone columns are retrieved at the full spatial resolution of the TROPOMI sensor (<span class="inline-formula">5.5×3.5</span> km<span class="inline-formula"><sup>2</sup></span>) with daily global coverage.</p> <p>Compared to the Ozone Mapping and Profiler Suite Modern-Era Retrospective analysis for Research and Applications 2 (OMPS-MERRA-2) data, a global mean positive bias of 3.3 <span class="inline-formula">DU</span> is found for the analysed period April 2018 to June 2020. A small negative bias of about <span class="inline-formula">−0.91</span> <span class="inline-formula">DU</span> is observed in the tropics relative to the operational TROPOMI tropical tropospheric data based on the convective cloud differential (CCD) algorithm throughout the same period. The new tropospheric ozone data (S5P-BASCOE) are compared to a set of globally distributed ozonesonde data integrated up to the tropopause level. We found 2254 comparisons with cloud-free TROPOMI observations within 25 <span class="inline-formula">km</span> of the stations. In the global mean, S5P-BASCOE deviates by 2.6 <span class="inline-formula">DU</span> from the integrated ozonesondes. Depending on the latitude the S5P-BASCOE deviate from the sondes and between <span class="inline-formula">−4.8</span> and 7.9 <span class="inline-formula">DU</span>, indicating a good agreement. However, some exceptional larger positive deviations up to 12 <span class="inline-formula">DU</span> are found, especially in the northern polar regions (north of 70<span class="inline-formula"><sup>∘</sup></span>). The monthly mean tropospheric column and time series for selected areas showed the expected spatial and temporal pattern, such as the wave one structure in the tropics or the seasonal cycle, including a summer maximum, in the mid-latitudes.</p>https://amt.copernicus.org/articles/15/5563/2022/amt-15-5563-2022.pdf |
| spellingShingle | K.-P. Heue K.-P. Heue D. Loyola F. Romahn W. Zimmer S. Chabrillat Q. Errera J. Ziemke N. Kramarova Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data Atmospheric Measurement Techniques |
| title | Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data |
| title_full | Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data |
| title_fullStr | Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data |
| title_full_unstemmed | Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data |
| title_short | Tropospheric ozone retrieval by a combination of TROPOMI/S5P measurements with BASCOE assimilated data |
| title_sort | tropospheric ozone retrieval by a combination of tropomi s5p measurements with bascoe assimilated data |
| url | https://amt.copernicus.org/articles/15/5563/2022/amt-15-5563-2022.pdf |
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