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| Titel |
Ground-based lidar measurements from Ny-Ålesund during ASTAR 2007 |
| VerfasserIn |
A. Hoffmann, C. Ritter, M. Stock, M. Shiobara, A. Lampert, M. Maturilli, T. Orgis, R. Neuber, A. Herber |
| 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 ; 9, no. 22 ; Nr. 9, no. 22 (2009-11-30), S.9059-9081 |
| Datensatznummer |
250007777
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| Publikation (Nr.) |
 copernicus.org/acp-9-9059-2009.pdf |
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| Zusammenfassung |
| During the Arctic Study of Tropospheric Aerosol, Clouds and Radiation
(ASTAR) in March and April 2007, measurements obtained at the AWIPEV
Arctic Research Base in Ny-Ålesund, Spitsbergen at 78.9° N, 11.9° E
(operated by the Alfred Wegener Institute for Polar and Marine Research –
AWI and the Institut polaire français Paul-Emile Victor – IPEV), supported the airborne
campaign. This included lidar data from the Koldewey Aerosol Raman Lidar
(KARL) and the Micro Pulse Lidar (MPL), located in the atmospheric
observatory as well as photometer data and the daily launched radiosonde. The
MPL features nearly continuous measurements; the KARL was switched on
whenever weather conditions allowed observations (145 h in 61 days). From 1
March to 30 April, 71 meteorological balloon soundings were performed and
compared with the concurrent MPL measurements; photometer measurements are
available from 18 March. For the KARL data, a statistical overview of particle detection based on
their optical properties backscatter ratio and volume depolarization can be
given. The altitudes of the occurrence of the named features (subvisible and
visible ice and water as well as mixed-phase clouds, aerosol layers) as well
as their dependence on different air mass origins are analyzed. Although the
spring 2007 was characterized by rather clean conditions, diverse case
studies of cloud and aerosol occurrence during March and April 2007 are
presented in more detail, including temporal development and main optical
properties as depolarization, backscatter and extinction coefficients. Links
between air mass origins and optical properties can be presumed but need
further evidence. |
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