Vol. 22, issue 12, article # 4

Samoilova S. V., Balin Yu. S., Kokhanenko G. P., Penner I. E. Investigation of the tropospheric aerosol layer vertical distribution from the data of sensing with a multifrequency Raman lidar. Part 2. Vertical distribution of aerosol optical properties in the visible wavelength range. // Optika Atmosfery i Okeana. 2009. V. 22. No. 12. P. 1123-1134 [in Russian].
Copy the reference to clipboard

From March 2006 to October 2007 regular lidar observations of the vertical aerosol distribution at Tomsk (56°N, 85°E) have been performed within the framework of CISLINET, the lidar network in the former USSR territories. A statistical analysis concerning the vertical distributions of the backscatter βa(532 nm) and extinction σa(532 nm) coefficients, and lidar ratio Sa(532 nm) derived from nighttime Raman lidar measurements (532 and 607 nm) for the height range from 0.45 to 7 km is presented. The two-year average values of the planetary boundary layer (PBL) height were 1.22km for the cold half-year (from October to March) and 2.3 km for the warm half-year (from April to September). The PBL mean values of σa(532 nm) were 0.025 km-1 (winter) and 0.061 km-1 (summer). The two-year lidar ratio of 52 sr (532 nm) was found in the upper part of PBL. In the free troposphere (FT) height profiles of βa(532 nm) and σa(532 nm) coefficients were proportional to the profiles of molecular coefficients. FT average values of σa(532 nm) were 0.0083 km-1 for cold and 0.061 km-1 for warm half-year. Two-year lidar ratios of 43.5 sr (winter) and 52.8 sr (summer) were found in the free troposphere.


Raman lidar, aerosol, statistical analysis, planetary boundary layer, free troposphere, extinction coefficient, backscatter coefficient, lidar ratio