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Titel |
Vertical NO2 Profile measurements in Hong Kong using DOAS |
VerfasserIn |
Mark Wenig, Melanie Bräu, Ying Zhu, Ivo Lipkowitsch, Clemens Röttger, Yun fat Lam |
Konferenz |
EGU General Assembly 2016
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Medientyp |
Artikel
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Sprache |
en
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 18 (2016) |
Datensatznummer |
250128038
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Publikation (Nr.) |
EGU/EGU2016-7978.pdf |
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Zusammenfassung |
In this presentation we describe our first measurements of vertical NO2 distributions in a street canyon in Hong Kong using different DOAS techniques. One approach is to use mobile cavity-enhanced DOAS (CE-DOAS) measurements on different floors of a high rise building to assemble a profile. In addition to this we use a ToTaL-DOAS (Topographic Target Light Scattering DOAS) approach to measure vertical and horizontal distributions of NO2 SCDs of the Hong Kong skyline including the building we used for the CE-DOAS measurements. As a third option to generate profile information, we use data from the Hong Kong Environmental Protection department (EPD) measurement stations. Each measurement location is at a different height and we used a concentration map we assembled using mobile CE-DOAS measurements which again had been corrected for diurnal variations using a continuously measuring LP-DOAS for horizontal extrapolation. We compare parameterized profiles from those three different methods and discuss how profile information can be used to make urban air quality monitoring more comparable. |
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