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| Titel |
Vertical profiles of urban aerosol complex refractive index in the frame of ESQUIF airborne measurements |
| VerfasserIn |
J.-C. Raut, P. Chazette |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 8, no. 4 ; Nr. 8, no. 4 (2008-02-22), S.901-919 |
| Datensatznummer |
250005674
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| Publikation (Nr.) |
 copernicus.org/acp-8-901-2008.pdf |
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| Zusammenfassung |
| A synergy between lidar, sunphotometer and in situ measurements has been
applied to airborne observations performed during the Etude et Simulation de
la QUalité de l'air en Ile-de-France (ESQUIF), enabling the retrieval of
vertical profiles for the aerosol complex refractive index (ACRI) and
single-scattering albedo with a vertical resolution of 200 m over Paris
area. The averaged value over the entire planetary boundary layer (PBL) for
the ACRI is close to 1.51(±0.02)–i0.017(±0.003) at 532 nm. The
single-scattering albedo of the corresponding aerosols is found to be ~0.9
at the same wavelength. A good agreement is found with previous studies
for urban aerosols. A comparison of vertical profiles of ACRI with
simulations combining in situ measurements and relative humidity (RH)
profiles has highlighted a modification in aerosol optical properties linked
to their history and the origin of the air mass. The determination of ACRI
in the atmospheric column enabled to retrieve vertical profiles of
extinction coefficient in accordance with lidar profiles measurements. |
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