MAX-DOAS retrieval of aerosol extinction properties in Madrid, Spain
<p><strong>Abstract.</strong> Multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements were performed in the urban environment of Madrid, Spain, from March to September 2015. The O<sub>4</sub> absorption in the ultraviolet (UV) spectral region was...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
18 October 2016
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| In: |
Atmospheric measurement techniques
Year: 2016, Jahrgang: 9, Heft: 10, Pages: 5089-5101 |
| ISSN: | 1867-8548 |
| DOI: | 10.5194/amt-9-5089-2016 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.5194/amt-9-5089-2016 Verlag, lizenzpflichtig, Volltext: https://www.atmos-meas-tech.net/9/5089/2016/ 
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| Verfasserangaben: | Shanshan Wang, Carlos A. Cuevas, Udo Frieß, and Alfonso Saiz-Lopez |
| Zusammenfassung: | <p><strong>Abstract.</strong> Multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements were performed in the urban environment of Madrid, Spain, from March to September 2015. The O<sub>4</sub> absorption in the ultraviolet (UV) spectral region was used to retrieve the aerosol extinction profile using an inversion algorithm. The results show a good agreement between the hourly retrieved aerosol optical depth (AOD) and the correlative Aerosol Robotic Network (AERONET) product, with a correlation coefficient of <i>R</i> = 0.87. Higher AODs are found in the summer season due to the more frequent occurrence of Saharan dust intrusions. The surface aerosol extinction coefficient as retrieved by the MAX-DOAS measurements was also compared to in situ PM<sub>2.5</sub> concentrations. The level of agreement between both measurements indicates that the MAX-DOAS retrieval has the ability to characterize the extinction of aerosol particles near the surface. The retrieval algorithm was also used to study a case of severe dust intrusion on 12 May 2015. The capability of the MAX-DOAS retrieval to recognize the dust event including an elevated particle layer is investigated along with air mass back-trajectory analysis.</p> |
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| Beschreibung: | Gesehen am 05.06.2020 |
| Beschreibung: | Online Resource |
| ISSN: | 1867-8548 |
| DOI: | 10.5194/amt-9-5089-2016 |