Firsov K.M., Bobrov E.V. Restoring the aerosol optical depth by ground measurements of SPM photometer

 
 
Firsov Konstantin Mikhaylovich
 
Doctor of Physical and Mathematical Sciences, Professor, Department of Laser Physics, Director of Physical-Technical Institute  Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
 
Bobrov Evgeniy Vladimirovich
 
Programming Specialist, Publishing House of Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
 
Abstract. Measurements of the aerosol optical depth (AOD) in the Lower Volga region by using photometer SPM, developed at the Institute of Atmospheric Optics, were made. This photometer detected and recorded the signals coming from the sun in a cloudless sky 10 spectral channels 0.339, 0.373, 0.439, 0.499, 0.673, 0.871, 0.939, 0.1044, 0.1555 и 0.2139 μm. The technique for retrieval of AOD from signals photometer was described in this article. Measurement results of SPM photometer and CE 318 photometer of AERONET network were compared. SPM photometer was tested for the presence of errors in each of the measurement channels, which are mainly due to operator error when pointing at the sun. Practically in all spectral channels (except 0.499 μm) AOD standard deviations were smaller value 0.01, when averaged over 30 minute intervals. Comparison of the distribution functions of the aerosol particle size of the retrieval from different photometers measurements of AOD was performed. There was quite a typical situation: the distribution function for the fine fraction recovered from the data for different photometers, found themselves close enough, while for coarse fraction has been some discrepancy. We believe that the reason for this is the large measurement error of AOD of SPM photometer compared to 318 CE photometer.
 
Key words: aerosol, aerosol optical depth, transfer of radiation, molecular dissipation,
absorption.
 

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Restoring the Aerosol Optical Depth by Ground Measurements of SPM Photometer by Firsov K.M., Bobrov E.V. is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Science Journal of Volgograd State University. Mathematics. Physics. №2 (21) 2014 pp. 57-65
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