Near-surface aerosol transmission in the marine environment

Alexander M. J. van Eijk; Leo H. Cohen; Laurent J. Navarro; Gerrit de Leeuw

doi:10.1117/12.462497

20 March 2003 Near-surface aerosol transmission in the marine environment

Alexander M. J. van Eijk, Leo H. Cohen, Laurent J. Navarro, Gerrit de Leeuw

Proceedings Volume 4884, Optics in Atmospheric Propagation and Adaptive Systems V; (2003) https://doi.org/10.1117/12.462497
Event: International Symposium on Remote Sensing, 2002, Crete, Greece

Abstract

An extensive data set of aerosol vertical concentration profiles (height range 0.5-15 meters, diameter range 10-75 micron), acquired with the Rotorod³ device at various geographical locations has been statistically analyzed. The analysis supplied a parameterization for the 4^th (large particle) lognormal mode in the Advanced Navy Aerosol Model (ANAM). The analysis revealed a positive correlation between concentration and wind speed, and a negative correlation between concentration and height. No clear dependence of radius and width on meteorological parameters has been found. Numerical simulations with the Dutch-French SeaCluse model supported the results of the statistical analysis. The present version of ANAM predicts the experimental aerosol concentration to within a factor of 3. This result was confirmed using an independent data set. Initial extinction calculations with the ANAM indicate that the addition of the 4^th mode changes aerosol extinction values by about 20% as compared to NAM calculations. Closer to the surface, this number is even higher due to the height dependence of the 4^th mode.

Citation Download Citation

Alexander M. J. van Eijk, Leo H. Cohen, Laurent J. Navarro, and Gerrit de Leeuw "Near-surface aerosol transmission in the marine environment", Proc. SPIE 4884, Optics in Atmospheric Propagation and Adaptive Systems V, (20 March 2003); https://doi.org/10.1117/12.462497

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