Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products
<p>Tropospheric <span class="inline-formula">NO<sub>2</sub></span> and stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities are important TROPOspheric Monitoring Instrument (TROPOMI) data...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2020-03-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/13/1413/2020/amt-13-1413-2020.pdf |
| _version_ | 1818520087229890560 |
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| author | P. Wang A. Piters J. van Geffen O. Tuinder P. Stammes S. Kinne |
| author_facet | P. Wang A. Piters J. van Geffen O. Tuinder P. Stammes S. Kinne |
| author_sort | P. Wang |
| collection | DOAJ |
| description | <p>Tropospheric <span class="inline-formula">NO<sub>2</sub></span> and stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities are important TROPOspheric Monitoring Instrument (TROPOMI) data products.
In order to validate the
TROPOMI <span class="inline-formula">NO<sub>2</sub></span> products, KNMI Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) instruments have measured <span class="inline-formula">NO<sub>2</sub></span> on ship cruises over the Atlantic
and the Pacific oceans. The MAX-DOAS instruments have participated in five cruises on board RV <i>Sonne</i> (in 2017 and 2019)
and RV <i>Maria S. Merian</i> (in 2018). The MAX-DOAS measurements were acquired over 7 months and spanned
about 90<span class="inline-formula"><sup>∘</sup></span> in latitude and 300<span class="inline-formula"><sup>∘</sup></span> in longitude.
During the cruises aerosol measurements from Microtops sun photometers were also taken.
The MAX-DOAS measured stratospheric <span class="inline-formula">NO<sub>2</sub></span> columns between
<span class="inline-formula">1.5×10<sup>15</sup></span> and <span class="inline-formula">3.5×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span>
and tropospheric <span class="inline-formula">NO<sub>2</sub></span> up to <span class="inline-formula">0.6×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span>.
The MAX-DOAS stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities have been compared with
TROPOMI stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities
and the stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities
simulated by the global chemistry Transport Model, version 5, Massively Parallel model (TM5-MP). Good correlation is found between the MAX-DOAS and TROPOMI and
TM5 stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities, with a correlation coefficient of 0.93 or larger. The TROPOMI and TM5
stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities are about <span class="inline-formula">0.4×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span> (19 %) higher than
the MAX-DOAS measurements.
The TROPOMI tropospheric <span class="inline-formula">NO<sub>2</sub></span> also has good agreement with the MAX-DOAS measurements. The
tropospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column density is as low as <span class="inline-formula">0.5×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span> over remote oceans.</p> |
| first_indexed | 2024-12-11T01:32:42Z |
| format | Article |
| id | doaj.art-a0b75e7aee484d0cb804a7867fedf5b4 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-11T01:32:42Z |
| publishDate | 2020-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-a0b75e7aee484d0cb804a7867fedf5b42022-12-22T01:25:19ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482020-03-01131413142610.5194/amt-13-1413-2020Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> productsP. Wang0A. Piters1J. van Geffen2O. Tuinder3P. Stammes4S. Kinne5Royal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the NetherlandsMax Planck Institute for Meteorology, Hamburg, Germany<p>Tropospheric <span class="inline-formula">NO<sub>2</sub></span> and stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities are important TROPOspheric Monitoring Instrument (TROPOMI) data products. In order to validate the TROPOMI <span class="inline-formula">NO<sub>2</sub></span> products, KNMI Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) instruments have measured <span class="inline-formula">NO<sub>2</sub></span> on ship cruises over the Atlantic and the Pacific oceans. The MAX-DOAS instruments have participated in five cruises on board RV <i>Sonne</i> (in 2017 and 2019) and RV <i>Maria S. Merian</i> (in 2018). The MAX-DOAS measurements were acquired over 7 months and spanned about 90<span class="inline-formula"><sup>∘</sup></span> in latitude and 300<span class="inline-formula"><sup>∘</sup></span> in longitude. During the cruises aerosol measurements from Microtops sun photometers were also taken. The MAX-DOAS measured stratospheric <span class="inline-formula">NO<sub>2</sub></span> columns between <span class="inline-formula">1.5×10<sup>15</sup></span> and <span class="inline-formula">3.5×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span> and tropospheric <span class="inline-formula">NO<sub>2</sub></span> up to <span class="inline-formula">0.6×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span>. The MAX-DOAS stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities have been compared with TROPOMI stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities and the stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities simulated by the global chemistry Transport Model, version 5, Massively Parallel model (TM5-MP). Good correlation is found between the MAX-DOAS and TROPOMI and TM5 stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities, with a correlation coefficient of 0.93 or larger. The TROPOMI and TM5 stratospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column densities are about <span class="inline-formula">0.4×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span> (19 %) higher than the MAX-DOAS measurements. The TROPOMI tropospheric <span class="inline-formula">NO<sub>2</sub></span> also has good agreement with the MAX-DOAS measurements. The tropospheric <span class="inline-formula">NO<sub>2</sub></span> vertical column density is as low as <span class="inline-formula">0.5×10<sup>15</sup></span> <span class="inline-formula">molec cm<sup>−2</sup></span> over remote oceans.</p>https://www.atmos-meas-tech.net/13/1413/2020/amt-13-1413-2020.pdf |
| spellingShingle | P. Wang A. Piters J. van Geffen O. Tuinder P. Stammes S. Kinne Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products Atmospheric Measurement Techniques |
| title | Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products |
| title_full | Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products |
| title_fullStr | Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products |
| title_full_unstemmed | Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products |
| title_short | Shipborne MAX-DOAS measurements for validation of TROPOMI NO<sub>2</sub> products |
| title_sort | shipborne max doas measurements for validation of tropomi no sub 2 sub products |
| url | https://www.atmos-meas-tech.net/13/1413/2020/amt-13-1413-2020.pdf |
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