MAX-DOAS retrieval of aerosol extinction properties in Madrid, Spain

• Verfasst von: Wang, Shanshan [VerfasserIn]
• Verfasst von: Cuevas, Carlos A. [VerfasserIn]
• Verfasst von: Frieß, Udo [VerfasserIn]
• Verfasst von: Saiz-Lopez, Alfonso [VerfasserIn]
• Titel: MAX-DOAS retrieval of aerosol extinction properties in Madrid, Spain
• Verf.angabe: Shanshan Wang, Carlos A. Cuevas, Udo Frieß, and Alfonso Saiz-Lopez
• E-Jahr: 2016
• Jahr: 18 October 2016
• Umfang: 13 S.
• Fussnoten: Gesehen am 05.06.2020
• Titel Quelle: Enthalten in: Atmospheric measurement techniques
• Ort Quelle: Katlenburg-Lindau : Copernicus, 2008
• Jahr Quelle: 2016
• Band/Heft Quelle: 9(2016), 10, Seite 5089-5101
• ISSN Quelle: 1867-8548
• DOI: doi:10.5194/amt-9-5089-2016
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 170009257X

Abstract

<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 O₄ 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_2.5 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>