Aerosol distribution around Svalbard during intense easterly winds
This paper reports on backscatter and depolarization measurements by an airborne lidar in the Arctic during the ASTAR 2004 campaign. A unique weather situation facilitated the observation of the aerosol concentration under strongly forced atmospheric conditions. The vigorous easterly winds distorted...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2010
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Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/21967/ https://epic.awi.de/id/eprint/21967/1/Doe2010a.pdf http://www.atmos-chem-phys.net/10/1473/2010/ https://hdl.handle.net/10013/epic.34209 https://hdl.handle.net/10013/epic.34209.d001 |
Summary: | This paper reports on backscatter and depolarization measurements by an airborne lidar in the Arctic during the ASTAR 2004 campaign. A unique weather situation facilitated the observation of the aerosol concentration under strongly forced atmospheric conditions. The vigorous easterly winds distorted the flow past Svalbard in such a way that mesoscale features were visible in the remote-sensing observations: The formation of a well-mixed aerosol layer inside the Adventdalen and the subsequent thinning of the aerosol plume were observed over the Isfjorden. Additionally, mobilization of sea salt aerosols due to a coastal low-level jet at the northern tip of Svalbard resulted in a sloped boundary layer toward north. Mesoscale numerical modelling was applied to identify the sources of the aerosol particles and to explain the observed patterns. |
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