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| Titel |
Lidar signal simulation for the evaluation of aerosols in chemistry transport models |
| VerfasserIn |
S. Stromatas, S. Turquety, L. Menut, H. Chepfer, J. C. Péré, G. Cesana, B. Bessagnet |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 5, no. 6 ; Nr. 5, no. 6 (2012-12-07), S.1543-1564 |
| Datensatznummer |
250002957
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| Publikation (Nr.) |
 copernicus.org/gmd-5-1543-2012.pdf |
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| Zusammenfassung |
| We present an adaptable tool, the OPTSIM (OPTical properties
SIMulation) software, for the simulation of optical properties and
lidar attenuated backscattered profiles (β') from
aerosol concentrations calculated by chemistry transport models
(CTM).
It was developed to model both Level 1 observations and Level 2 aerosol lidar retrievals in
order to compare model results to measurements: the level 2 enables to
estimate the main properties of aerosols plume structures, but may be limited
due to specific assumptions. The level 1, originally developed for this tool,
gives access to more information about aerosols properties (β')
requiring, at the same time, less hypothesis on aerosols types.
In addition to an evaluation of the aerosol loading and optical
properties, active remote sensing allows the analysis of aerosols' vertical structures.
An academic case study for two different
species (black carbon and dust) is presented and shows the consistency
of the simulator. Illustrations are then given through the analysis of
dust events in the Mediterranean region during the summer 2007. These
are based on simulations by the CHIMERE regional CTM and observations
from the CALIOP space-based lidar, and highlight the potential of this
approach to evaluate the concentration, size and vertical structure of
the aerosol plumes. |
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