Intraannual dynamics of background stratosphere aerosol over Tomsk according to lidar monitoring data

V. N. Marichev   ; D. A. Bochkovsky

Vestnik KRAUNC. Fiziko-matematičeskie nauki, Tome 45 (2023) no. 4, pp. 88-94

Résumé

The article analyzes data on the intra-annual variability of the vertical-temporal structure of the background aerosol and its integral content in the stratosphere, obtained at the lidar complex of the high-altitude atmospheric sounding station of the IAO SB RAS for 2022. As primary information for the analysis, a data array of 93 total signals accumulated was used on select nights. The interval of sounded heights extended from 10 to 50-60 km, the spatial resolution was 192 m. Reception of lidar signals was carried out in the photopulse counting mode with accumulation of $12\times 10^4$ launches of laser pulses, the accumulation time of the total signal was 2 hours. The optical characteristic R(H) is the aerosol scattering ratio (H is the current height) as a parameter describing the vertical stratification of the aerosol. By definition, R(H) is the ratio of the sum of the aerosol and molecular backscattering coefficients to the molecular backscattering coefficient. Based on the monitoring results, as in previous years, a stable tendency for the accumulation of stratospheric aerosol in the cold season of the year was established with a maximum content in January and a decrease in the spring to virtual absence in June-July. From September, the aerosol content in the stratosphere begins to increase to its maximum value in winter. In the upper stratosphere (30-50 km) there is no background aerosol throughout the year. The article also presents the time dynamics of the complete filling of the stratosphere with background aerosol starting from 2017 to 2021 and supplemented by observations in 2022, expressed through the parameter of the integral aerosol backscattering coefficient B.

Détail

Keywords: stratosphere, temperature
Mots-clés : lidar.

Bibliographie

[1] Marichev V. N., Bochkovsky D. A., Elizarov A. I., “Optical aerosol model of the Western Siberian stratosphere based on lidar monitoring results”, Atmospheric and Oceanic Optics, 35:09 (2022), 717-721

[2] Marichev V. N., Bochkovskii D. A., “Study of variability of the background aerosol content in the stratosphere over tomsk by lidar measurement data in 2016-2019”, Proceedings of SPIE, 11560 (2016), 1156088-1 - 1156088-6

[3] Marichev V. N., Bochkovskii D. A., “Monitoring the Variability of the Stratospheric Aerosol Layer over Tomsk in 2016–2018 Based on Lidar Data.”, Russ. Meteorol. Hydrol., 46 (2021), 43–51 | DOI

[4] Bazhenov O.E., et al., “Comparison of remote spectrophotometric and lidar measurements of O3, NO2, temperature, and stratospheric aerosol with data of satellite and radiosonde measurements”, Atmospheric and ocean optics, 29:3 (2016), 216-223 (In Russian) | DOI | MR

[5] Yel'nikov A.V., Krekov G.M., Marichev V.N., “Lidarnyye nablyudeniya stratosfernogo sloya aerozolya nad Zapadnoy Sibir'yu”, Izvestiya AN SSSR. Fizika atmosfery i okeana, 24:8 (1988), 818-823 (In Russian)

[6] Zuyev V.V., Zuyev V.Ye., Marichev V.N., “Nablyudeniya stratosfernogo aerozol'nogo sloya posle izverzheniya vulkana Pinatubo na seti lidarnykh stantsiy”, Optika atmosfery i okeana, 6:10 (1993), 1180-1201 (In Russian)

[7] Trickl T., Giehl H., Jager H., Vogelmann H., “35 yr of stratospheric aerosol measurements at Garmisch-Partenkirchen: from Fuego to Eyjafjallajokull, and beyond”, Atmos. Chem. Phys., 13 (2013), 5205–5225 | DOI

[8] Cheremisin A. A., Marichev V. N., Bochkovskii D. A., Novikov P. V., Romanchenko I. I., “Stratospheric Aerosol of Siberian Forest Fires According to Lidar Observations in Tomsk in August 2019”, Atmospheric and Oceanic Optics, 35:01 (2022), 57–64 | DOI

[9] Vaughan G., Draude A. P., Ricketts H. M., Schultz D. M., Adam M., Sugier J., Wareing D. P., “Transport of Canadian forest fire smoke over the UK as observed by lidar”, Atmos. Chem. Phys., 18 (2018), 11375–11388 | DOI

[10] Ansmann A., Baars H., Chudnovsky A., Mattis I., Veselovskii I., Haarig M., Seifert P., Engelmann R., Wandinger U., “Extreme levels of Canadian wildfire smoke in the stratosphere over central Europe on 21–22 August 2017”, Atmos. Chem. Phys., 18 (2018), 11831– 11845 | DOI

[11] Khaykin S. M., Godin-Beekmann S., Hauchecorne A., Pelon J., Ravetta F., Keckhut P., “Stratospheric smoke with unprecedentedly high backscatter observed by lidars above southern France”, Geophys. Res. Lett., 45 (2018), 1639–1646 | DOI

[12] Siddaway J. M., Petelina S. V., “Transport and evolution of the 2009 Australian Black Saturday bush fire smoke in the lower stratosphere observed by OSIRIS on Odin”, J. Geophys. Res., 116 (2011), D06203 | DOI

[13] Fromm M., Alfred J., Hoppel K., Hornstein J., Bevilacqua R., Shettle E., Servranckx R., Li Z., Stocks B., “Observations of boreal forest fire smoke in the stratosphere by POAM III, SAGE II, and lidar in 1998”, Geophys. Res. Lett., 27:09 (2000), 1407–1410 | DOI

[14] Korshunov V. A., Zubachev D. S., “Characteristics of Stratospheric Aerosol from Data of Lidar Measurements over Obninsk in 2012–2015”, Atmospheric and Oceanic Optics, 30:03 (2017), 226–233 | DOI

[15] Gerasimov V. V., Zuyev V. V., Savel'yeva Ye. S., “Sledy kanadskikh pirokumulyativnykh oblakov v stratosfere nad Tomskom v iyune – iyule 1991 g.”, Optika atmosfery i okeana, 32:1 (2019), 39-46 (In Russian)