Vol. 24, issue 12, article # 2
Burlakov V. D., Dolgii S. I., Nevzorov A. V. Lidar observations of the stratosphere aerosol disturbances over Tomsk (56.5°N; 85.0°E) in period of volcanic activity of 2006-2010. // Optika Atmosfery i Okeana. 2011. V. 24. No. 12. P. 1031-1040 [in Russian].Copy the reference to clipboard
Abstract:
We generalize and analyze the results of lidar measurements (Tomsk: 56.5°N; 85.0°E) of the optical and microstructure characteristics of the stratospheric aerosol layer (SAL) in 2006-2010 period of volcanic activity. The background SAL state with a minimum aerosol content, which had been observed since 1997 under conditions of long-term volcanically quiet period, was interrupted in October 2006 by a series of explosive eruptions of Pacific "Ring of Fire" volcanoes: Rabaul (October 2006, New Guinea); Okmok and Kasatochi (July-August 2008, Aleutian Islands); Redoubt (March-April 2009, Alaska); and Sarychev Peak (June 2009, Kuril Islands). A short-term insignificant disturbance of the lower stratosphere was also observed in April 2010 after eruption of Iceland's Eyjafjallajokull volcano. A regional empirical model of the vertical distribution of the optical characteristics of background SAL, developed by us, was used to identify the periods of elevated stratospheric aerosol content after each of the volcanic eruptions. Trends of variations in the total ozone content are also considered.
Keywords:
stratosphere, aerosol, volcanoes, lidar