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Status: Bibliographieeintrag

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Verfasst von:Pinardi, Gaia [VerfasserIn]   i
 Frieß, Udo [VerfasserIn]   i
 Holla, Robert [VerfasserIn]   i
Titel:Validation of tropospheric NO2 column measurements of GOME-2A and OMI using MAX-DOAS and direct sun network observations
Verf.angabe:Gaia Pinardi, Michel Van Roozendael, François Hendrick, Nicolas Theys, Nader Abuhassan, Alkiviadis Bais, Folkert Boersma, Alexander Cede, Jihyo Chong, Sebastian Donner, Theano Drosoglou, Anatoly Dzhola, Henk Eskes, Udo Frieß, José Granville, Jay R. Herman, Robert Holla, Jari Hovila, Hitoshi Irie, Yugo Kanaya, Dimitris Karagkiozidis, Natalia Kouremeti, Jean-Christopher Lambert, Jianzhong Ma, Enno Peters, Ankie Piters, Oleg Postylyakov, Andreas Richter, Julia Remmers, Hisahiro Takashima, Martin Tiefengraber, Pieter Valks, Tim Vlemmix, Thomas Wagner, and Folkard Wittrock
E-Jahr:2020
Jahr:18 November
Umfang:34 S.
Fussnoten:Im Titel ist "2" in NO2 tiefgestellt ; Gesehen am 08.02.2020
Titel Quelle:Enthalten in: Atmospheric measurement techniques
Ort Quelle:Katlenburg-Lindau : Copernicus, 2008
Jahr Quelle:2020
Band/Heft Quelle:13(2020), 11, Seite 6141-6174
ISSN Quelle:1867-8548
Abstract:Abstract. Multi-axis differential optical absorption spectroscopy (MAX-DOAS) and direct sun NO2 vertical column network data are used to investigate the accuracy of tropospheric NO2 column measurements of the GOME-2 instrument on the MetOp-A satellite platform and the OMI instrument on Aura. The study is based on 23 MAX-DOAS and 16 direct sun instruments at stations distributed worldwide. A method to quantify and correct for horizontal dilution effects in heterogeneous NO2 field conditions is proposed. After systematic application of this correction to urban sites, satellite measurements are found to present smaller biases compared to ground-based reference data in almost all cases. We investigate the seasonal dependence of the validation results as well as the impact of using different approaches to select satellite ground pixels in coincidence with ground-based data. In optimal comparison conditions (satellite pixels containing the station) the median bias between satellite tropospheric NO2 column measurements and the ensemble of MAX-DOAS and direct sun measurements is found to be significant and equal to −34% for GOME-2A and −24% for OMI. These biases are further reduced to −24% and −18% respectively, after application of the dilution correction. Comparisons with the QA4ECV satellite product for both GOME-2A and OMI are also performed, showing less scatter but also a slightly larger median tropospheric NO2 column bias with respect to the ensemble of MAX-DOAS and direct sun measurements.
DOI:doi:10.5194/amt-13-6141-2020
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/https://doi.org/10.5194/amt-13-6141-2020
 Volltext: https://amt.copernicus.org/articles/13/6141/2020/
 DOI: https://doi.org/10.5194/amt-13-6141-2020
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1747793299
Verknüpfungen:→ Zeitschrift

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