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Lidar Observations of Aerosol Disturbances of the Stratosphere over Tomsk ( N; E) in Volcanic Activity Period 2006\!-\!2011

DOI: 10.1155/2012/786295

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Abstract:

The lidar measurements (Tomsk: N; E) of the optical characteristics of the stratospheric aerosol layer (SAL) in the volcanic activity period 2006–2011 are summarized and analyzed. The background SAL state with minimum aerosol content, observed since 1997 under the conditions of long-term volcanically quiet period, was interrupted in October 2006 by series of explosive eruptions of volcanoes of Pacific Ring of Fire: Rabaul (October 2006, New Guinea); Okmok and Kasatochi (July-August 2008, Aleutian Islands); Redoubt (March-April 2009, Alaska); Sarychev Peak (June 2009, Kuril Islands); Grimsv?tn (May 2011, Iceland). A short-term and minor disturbance of the lower stratosphere was also observed in April 2010 after eruption of the Icelandic volcano Eyjafjallajokull. The developed regional empirical model of the vertical distribution of background SAL optical characteristics 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. 1. Introduction The optical and microstructure characteristics of the stratospheric aerosol (SA) substantially influence the radiative, dynamical, and chemical processes in the Earth’s atmosphere. The natural and anthropogenic factors, which determine the state of the stratospheric aerosol layer (SAL), may have the character of a constant, gradually accumulating effect or a short-term powerful disturbance. The SA effects are most apparent after explosive volcanic eruptions, when sulfur-containing products are injected through the tropopause directly to the stratosphere, where they participate in a number of photochemical reactions to form the sulfuric acid aerosol, whose mass is several orders of magnitude larger than the mass of the background aerosol. In this case, direct measurements record considerable radiation-temperature effects [1, 2]; there are long-term declines in ozone content because heterogeneous chemical reactions on the increased surfaces of aerosol particles convert relatively inert forms of chlorine compounds to more reactive ozone-depleting species [3–5]. In analysis and prediction of different stratospheric changes, it is necessary to determine and identify the periods of increased SA content and to determine and predict the long-term trends of variations in the SA characteristics for different SAL states. These data make it possible to get systematic SAL observations carried out by different methods of ground-based, balloon-sonde, and satellite measurements and, in particular, with the use

References

[1]  M. P. McCormick, L. W. Thomason, and C. R. Trepte, “Atmospheric effects of the Mt Pinatubo eruption,” Nature, vol. 373, no. 6513, pp. 399–404, 1995.
[2]  K. Labitzke and M. P. McCormick, “Stratospheric temperature increases due to Pinatubo aerosols,” Geophysical Research Letters, vol. 19, no. 2, pp. 207–210, 1992.
[3]  D. J. Hofmann and S. Solomon, “Ozone destruction through heterogeneous chemistry following the eruption of El Chichon,” Journal of Geophysical Research, vol. 94, no. 4, pp. 5029–5041, 1989.
[4]  A. Ansmann, F. Wagner, U. Wandinger et al., “Pinatubo aerosol and stratospheric ozone reduction: observations over central Europe,” Journal of Geophysical Research D, vol. 101, no. 13, pp. 18775–18785, 1996.
[5]  V. V. Zuev, O. E. Bazhenov, V. D. Burlakov, M. V. Grishaev, S. I. Dolgii, and A. V. Nevzorov, “On the effect of volcanic aerosol on variations of stratospheric ozone and NO2 according to measurements at the Siberian Lidar Station,” The Atmospheric and Oceanic Optics, vol. 21, no. 11, pp. 825–831, 2008.
[6]  B. Kravitz, A. Robock, L. Oman, G. Stenchikov, and A. B. Marquardt, “Sulfuric acid deposition from stratospheric geoengineering with sulfate aerosols,” Journal of Geophysical Research D, vol. 114, no. 16, Article ID D16119, 7 pages, 2010.
[7]  A. Robock, L. Oman, and G. L. Stenchikov, “Regional climate responses to geoengineering with tropical and Arctic SO2 injections,” Journal of Geophysical Research D, vol. 113, no. 16, Article ID D16101, 2008.
[8]  V. V. Zuev, V. D. Burlakov, A. V. El'nikov, A. P. Ivanov, A. P. Chaikovskii, and V. N. Shcherbakov, “Processes of long-term relaxation of stratospheric aerosol layer in Northern Hemisphere midlatitudes after a powerful volcanic eruption,” Atmospheric Environment, vol. 35, no. 30, pp. 5059–5066, 2001.
[9]  V. V. Zuev, O. E. Bazhenov, V. D. Burlakov, and A. V. Nevzorov, “Long-term trends, seasonal and anomalous short-term variations of background stratospheric aerosol,” Atmospheric and Oceanic Optics, vol. 21, no. 1, pp. 33–38, 2008.
[10]  T. Deshler, R. Anderson-Sprecher, H. J?ger et al., “Trends in the nonvolcanic component of stratospheric aerosol over the period 1971–2004,” Journal of Geophysical Research D, vol. 111, no. 1, Article ID D01201, 2006.
[11]  V. V. Zuev, V. D. Burlakov, A. V. El'nikov, and A. V. Nevzorov, “Lidar observations of midlatitude stratospheric aerosol layer during long-term volcanically quiet period,” Atmospheric and Oceanic Optics, vol. 19, no. 7, pp. 535–539, 2006.
[12]  M. H. Hitchman, M. McKay, and C. R. Trepte, “A climatology of stratospheric aerosol,” Journal of Geophysical Research D, vol. 99, no. 10, pp. 20689–20700, 1994.
[13]  V. V. Zuev, S. BalinYu, O. A. Bukin, et al., “Results of joint observations of aerosol perturbations in the stratosphere at stations of CIS-LiNet in 2008,” Atmospheric and Oceanic Optics, vol. 22, no. 5, pp. 450–456, 2009.
[14]  B. G. Martinsson, C. A. M. Brenninkmeijer, S. A. Cam et al., “Influence of the 2008 Kasatochi volcanic eruption on sulfurous and carbonaceous aerosol constituents in the lower stratosphere,” Geophysical Research Letters, vol. 36, no. 12, Article ID L12813, 2009.
[15]  G. D’Amico, A. Amodeo, A. Boselli, et al., “Stratospheric aerosol layers over southern Italy during the summer of 2009: lidar observations and model comparison,” in Proceedings of the 25th International Laser Radar Conference, vol. 1, pp. 473–476, St.-Petersburg, July 2010, month year.
[16]  I. Mattis, P. Seifert, D. Muller, et al., “Volcanic aerosol layers observed with multi-wawelength Raman lidar over Europe since summer 2008,” in Proceedings of the 25th International Laser Radar Conference, vol. 1, pp. 445–448, St.-Petersburg, July 2010.
[17]  T. Trickl, H. Giehl, H. J?ger, and M. Fromm, “33 years of stratospheric aerosol measurements at Garmisch-Partenkirchen (1976–2010),” in Proceedings of the 25th International Laser Radar Conference, vol. 1, pp. 465–468, St.-Petersburg, July 2010.
[18]  E. C. Weatherhead and S. B. Andersen, “The search for signs of recovery of the ozone layer,” Nature, vol. 441, no. 1, pp. 39–45, 2006.
[19]  World Meteorological Organization (WMO), “United nations environment programme (UNEP): scientific assessment of ozone depletion: 2006,” Tech. Rep. 50, World Meteorological Organization, Global Ozone Research and Monitoring Project, Geneva, Switzerland, 2007.
[20]  World Meteorological Organization, “Global ozone research and monitoring project,” type 52, Scientific Assessment of ozone Depletion: 2010 Pursuant to Article 6 of the Montreal Protocol on Substances that Deplete the Ozone Layer, Geneva, Switzerland, 2011.
[21]  V. Eyring, D. W. Waugh, G. E. Bodeker et al., “Multimodel projections of stratospheric ozone in the 21st century,” Journal of Geophysical Research D, vol. 112, no. 16, Article ID D16303, 2007.
[22]  T. G. Shepherd, “Dynamics, stratospheric ozone, and climate change,” Atmosphere-Ocean, vol. 46, no. 1, pp. 117–138, 2008.
[23]  D. W. Waugh, L. Oman, S. R. Kawa et al., “Impacts of climate change on stratospheric ozone recovery,” Geophysical Research Letters, vol. 36, no. 3, Article ID L03805, 2009.
[24]  S. Dhomse, M. Weber, I. Wohltmann, M. Rex, and J. P. Burrows, “On the possible causes of recent increases in northern hemispheric total ozone from a statistical analysis of satellite data from 1979 to 2003,” Atmospheric Chemistry and Physics, vol. 6, no. 5, pp. 1165–1180, 2006.
[25]  A. I. Jonsson, J. de Grandpré, V. I. Fomichev, J. C. McConnell, and S. R. Beagley, “Doubled CO2-induced cooling in the middle atmosphere: photochemical analysis of the ozone radiative feedback,” Journal of Geophysical Research D, vol. 109, Article ID D24103, 2004.
[26]  N. Butchart, A. A. Scaife, M. Bourqui et al., “Simulations of anthropogenic change in the strength of the Brewer-Dobson circulation,” Climate Dynamics, vol. 27, no. 7-8, pp. 727–741, 2006.
[27]  S. J. Eichelberger and D. L. Hartmann, “Changes in the strength of the Brewer-Dobson circulation in a simple AGCM,” Geophysical Research Letters, vol. 32, no. 15, Article ID L15807, 2005.
[28]  D. Hofmann, S. Oltmans, W. Komhyr, et al., “Ozone loss in the lower stratosphere over the United States in 1992–1993: evidence for heterogeneous chemistry on the Pinatubo aerosols,” Geophysical Research Letters, vol. 21, no. 1, pp. 65–68, 1994.
[29]  http://toms.gsfc.nasa.gov/.
[30]  A. J. Prata and C. Bernardo, “Retrieval of volcanic SO2 column abundance from Atmospheric infrared sounder data,” Journal of Geophysical Research D, vol. 112, no. 20, Article ID D20204, 2007.

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