Russian National Report for the 9 WMO/UNEP Ozone Research Managers’ Meeting 14 - 16 May 2014, Geneva, Switzerland th 1. OBSERVATIONAL ACTIVITIES 1.1. Column measurements of ozone and other gases / constituents responsible for ozone loss Routine observations of atmospheric ozone comprise observations of total ozone (TO) and ozone vertical distribution. Routine observations of nitrogen dioxide comprise observations of its content in the vertical atmospheric column. In the Russian Federation, responsibility for regular total ozone measurements and interaction with the corresponding WMO bodies lies with the Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet). Daily TO measurements are being performed on the network of ozone measuring stations, which numbered 33 on April 1, 2014, equipped with filter ozonometers М-124 and located on the territory of the Russian Federation and Kazakhstan. Technical and methodological support of the network is provided by A.I. Voeykov Main Geophysical Observatory (MGO). Observational data are transmitted on-line to the Central Aerological Observatory (CAO), MGO, and RF Hydrometeorological Center. Observational data are transmitted on-line to the Central Aerological Observatory (CAO) and MGO. CAO transmits the data online to the World Ozone and UV Data Centre (WOUDC) under the Environment Service of Canada. Apart from that, total ozone measurements are performed by institutions of Roshydromet and the Russian Academy of Sciences using ozonometers M-124, Brewer spectrophotometers as well as SAOZ instruments. Brewer spectrophotometers measure TO in Kislovodsk (Obukhov Institute of Atmospheric Physics, RAS), Tomsk (Zuev Institute of Atmospheric Optics, RAS Siberian Branch), and Obninsk (SI RPA “Typhoon”), with the measurement data also transmitted to WOUDC. Total ozone and NO2 measurements on the territory of Russia using SAOZ are made by CAO specialists, at 6 high-latitude stations: Anadyr (64°N, 177°E), Zhigansk (67°N, 123°E), Irkutsk (52°N, 104°E), Salekhard (67°N, 67°E), Dolgoprudny (56°N, 37°E), Murmansk (68N°.,33°E.).. Data from Salekhard and Zhigansk are available at (http://saoz.obs.uvsq.fr/). The first TO measurements from the Russian geostationary weather satellite Elektro-L have been obtained (Kramchaninova and Uspensky, 2013). Regular measurements of NO2 content in the vertical atmospheric column have been conducted at Zvenigorod research station (ZRS) of A.M. Obukhov Institute of Atmospheric Physics (IAP), RAS, since 1990. The measurements are made with a spectrophotometer based on a domestically produced monochromator MDR-23, by an original technique based on the reconstruction of NO2 vertical distribution. The station is included in the International Network for the Detection of Atmospheric Composition Change (NDACC), its NO2 measurement data readily available at the NDACC server (http://www.ndacc.org/). At the Chair of Physics of the Physics Faculty of St.Petersburg State University, regular ground spectroscopic measurements of ozone and ozone-depleting gases are being continued. IR solar spectra are measured on sunny days using a special groundbased system based on high-resolution Fourier spectrometer. 1.2. Profile measurements of ozone and other gases / constituents responsible for ozone loss During 2011 and 2012 spring seasons, several measurements of ozone vertical profiles were made using ozone sondes at Salekhard station; the data is available at NDACC server (http://www.ndacc.org/). Measurements of ozone profiles in the stratosphere and mesosphere with a microwave radiometer (142.2 GHz) are conducted on a regular basis at P.N. Lebedev Physical Institute of RAS in Moscow (Solomonov et al., 2012). Occasionally, ozone profiles are measured with microwave radiometer in Nizhniy Novgorod and Tomsk (Marichev et al., 2012; Ryskin et al., 2012). Besides, lidar measurements of ozone and aerosol profiles up to 70 km are made (particularly, in relation with observations of polar stratospheric clouds) at Tomsk (Zuev Institute of Atmospheric Optics, RAS Siberian Branch (Marichev et al., 2012; Cheremisin et al., 2013). Also, NO2 vertical profiles are retrieved at the ZRS of the Institute of Atmospheric Physics, RAS, from spectroscopic zenith measurements of scattered solar radiation. Similar measurements are made in Tomsk. 1.3 UV measurements 1.3.1 Broadband measurements Pilot measurements of UVB-radiation have been carried out at 14 ozone measuring station of Roshydromet since 2006. The UV radiation (UVR) measurements follow the technique developed by MGO and use M-124 ozonometers with correction attachments (Larche sphere). Observational results will be available after calibration of the ozonometers with attachments against an UVR reference sample. Long-term regular measurements of UV-irradiation in an UV-B spectral range, using an UVB-1YES pyranometer, have been conducted at Lomonosov Moscow State University (MSU) since 1999, and in a 300-380 nm range since 1968 (Chubarova, Ozone Assessment, chapter 7, 2007; ACP, 2008). 1.3.2 Spectroradiometers UV-B radiation monitoring using Brewer instruments have been carried out in Kislovodsk since 1989, in Obninsk since 1994, and in Tomsk since 2006. Besides, at 4 stations of Roshydromet, pilot measurements of the spectral composition of total (global) UV radiation within a 290-400 nm range have been conducted since 2008. 1.4 Calibration activities 1.4.1 Calibration of ozonometers M-124 The MGO fulfils calibration of ozonometers М-124. TO reference is provided by Dobson spectrophotometer No.108, which, in turn, once in 4 years undergoes intercalibration procedure at the WMO European Calibration Center. Since 1988, the departure of Dobson No.108 TO measurements from the WMO reference values has not exceeded 1%. 1.4.2 Regular TO measurement quality control TO measurement scale stability is maintained through regular calibration of ozonometers М-124 at MGO and monthly ozonometer intercomparisons at the stations. Each station has got 3 instruments – operational, back-up, and reserve. After repair (upgrading) and calibration at the MGO, the reserve ozonometer is set up at the station and becomes operational. The cycle covers 2 years. The MGO provides continuous control of measurement quality and performance rate of ozonometers to reveal measurement scale changes and, if required, correct measurement results. Ozonometers showing considerable changes in measurement scale are replaced ahead of the schedule time, and undergo calibration. 1.4.3 UV calibration In 2010, an operational, Category 1 reference sample of irradiation spectral density in a 250-800 nm range, based on a quartz-halogen bulb, certified by the Russian Federation State Agency for Standardization, Gosstandard, was introduced to practice. Absolute-scale calibration of UV radiation measurements has been fulfilled at the MGO since 2011. . 1.4.4 Brewer spectrophotometer calibration All the Brewer spectrophotometers in Russia, operated in Obninsk, Kislovodsk, and Tomsk, were last calibrated in 2012. 2. RESULTS FROM OBSERVATIONS AND ANALYSIS Observation analysis has been primarily aimed at understanding the reasons for occasional ozone anomalies and long-term ozone layer changes. Analysis of the evolution of profiles of the vertical ozone mixing ratio distribution over South Pole station, based on the US NOAA data (ftp://ftp.cmdl.noaa.gov/), has demonstrated that the deepening of the ozone hole during the first decade since its opening was accompanied by temperature decrease in the lower stratosphere (Fig.1). During the following decade, both the temperature in the lower stratosphere and the ozone hole over the Antarctic stabilized (Zvyagintsev et al., 2012). Some papers are devoted to the investigation of an unprecedentedly deep and long-term 2011 anomaly in the high-latitude Northern Hemisphere (Bazhenov and Burlakov., 2011; Ananiev et al., 2012; Zvyagintsev et al., 2013). It is shown, in particular (Ananiev et al., 2012; Zvyagintsev et al., 2013), that the anomaly was caused by very low temperatures that persisted for a record-long time in that region (Fig. 2), with the lower stratospheric temperatures exceeding those characteristic of the Antarctic ozone hole by nearly 10°C. Also, no Northern Hemisphere stations flying ozone sondes observed the local minimum in the vertical distribution of ozone mixing ratio at 15-20 km characteristic of the Antarctic ozone hole (Fig.1). Fig. 1. Mean annual variation of temperature (°С; left) and common logarithm of ozone mixing ration (billion-1; right) at different heights Н (km) over NOAA South Pole station, based on ozone sounding data: during 1986-1990 (top)., 1996-2000 (middle), 20062010 (bottom) (Zvyagintsev et al., 2012). Fig. 2. Interannual variation of mean monthly temperatures during the period DecemberMarch at 30 hPa (about 23 km) over the Northern Pole, based on Freie Universität, Berlin, data. Dashed line marks -78 °С level, below which polar stratospheric clouds can originate (Zvyagintsev et al., 2013). The influence of different factors (sun elevation, total ozone content, surface albedo, optical properties of aerosols and clouds) on two types of biologically active UV radiation – the one causing erythema (erythema-weighted) and the other producing vitamin D – was studied (Zhdanova and Chubarova, 2011). A new classification of UVresources was proposed which helped to estimate the natural areas with UV-deficiency, UV-excess, and UV-optimum for human health in Eurasia (Chubarova and Zhdanova, 2012, 2013; Zhdanova and Chubarova, 2013). This classification takes into account aerosol distribution, surface albedo, and total ozone content for different seasons. In particular, it is shown that UV-irradiance in Europe is more comfortable that in Asia, while the largest part of Russia suffers from UV deficiency during cold seasons (Fig.3). Fig. 3. Examples of the spatial distribution of UV resources for the 2nd skin type under typical cloud conditions in January, April, July, and October. Based on the data from (Chubarova and Zhdanova, 2013). A number of studies is devoted to the analysis of NO2 time variability in the atmosphere. The regimes of NO2 amount variability in the stratosphere and in the boundary layer, based on the data of Zvenigirod station of the Institute of Atmospheric Physics, RAS, differ considerably (Gruzdev and Elokhov, 2011). Stratospheric NO2 content is rather variable both annually and daily, with less regular annual oscillations, intra-annual and inter-annual variations. The amount of NO2 in the atmospheric boundary layer, which is largely affected by pollution events, is highly variable. Against this background there occur irregular daily, intra-annual (within 15-100- day periods), and annual variations. The interannual variability of NO2 content in the stratosphere includes quasi-biennial variations with 2-3 % amplitude in middle and high latitudes and 4-5 % in the tropics and near the poles (Gruzdev, 2011a). Part of the studies are devoted to weekly atmospheric cyclicality. Weekly variations have been revealed in the lower tropospheric and stratospheric NO2 values at the ZRS IAP RAS, as well as in weather parameters (temperature, geopotential, and wind speed) both in the surface layer and stratosphere in Moscow environs and in Western Siberia (Gruzdev, 2011b). For a weekly cycle to exist, weekly variations have to occur synchronously with calendar weekly rate. Weekly cyclicality has been revealed in NO2 content throughout the stratosphere over the ZRS, total ozone, temperature, geopotentia, and meridional wind speed in the upper troposphere and lower stratosphere over Moscow environs during warm half-year periods (Gruzdev, 2013). However, weekly cyclicality has been found neither in surface NO2 content, nor aerosol mass concentration at the ZRS, although weekly variations in surface NO2 and aerosol have been found to occur (Gruzdev et al., 2012). According to the ZRS NO2 observations, a strong negative anomaly in total NO2 was detected in late March 2011 г. (Gruzdev and Elokhov, 2013a). Then, NO2 content was about 40 % less than the mean NO2 value for the season. The anomaly was caused by stratospheric air transport from the zone of the ozone hole then observed over the Arctic. NO2 measurement validation has been continued using OMI instrument, based on the ZRS measurement data (Gruzdev and Elokhov, 2013b). 3. THEORY, MODELLING AND OTHER RESEARCH The MGO is continuing studies devoted to the prediction of changes in ozone, surface UV fluxes, and atmospheric dynamics during the XXI century, using chemical climatic models. In order to assess the changes produced by anthropogenic influences, a three-dimensional chemical climatic model, SOCOL 2.0, is applied (Zubov et al., 2011, 2013a, 2013b). Such factors as atmospheric concentrations of green-house gases, ozone depleting substances, sea surface temperatures, and sea ice are considered. At the Chair of Atmospheric Physics of St. Petersburg University Physics Department, investigations are being continued to find the ways of measuring atmospheric gaseous composition through ground-based and satellite-borne spectroscopic observations (Makarova et al., 2011; Polyakov et al., 2011, 2013; Virolainen et al., 2011, 2013; Yagovkina et al., 2011; Kostsov et al., 2012; Ionov et al., 2012, 2013; Pastel et al., 2013; Gavrilov et al., 2013; Semakin et al., 2013). For ozone and main ozone-depleting gases (H2O, CH4, N2O, etc.), optimal IR spectral intervals in which measurement should be made, “interfering” gases, and random errors in single measurements of gas content have been determined. The acquired results are exemplified in Fig.4 by showing some measurements of chlorine nitrate (ClONO2) at different observational sites. 1015 mol/cm2 01/09 4 07/09 01/10 07/10 01/11 3 07/11 01/12 Eureka - 80N 2 1 1015 mol/cm2 0 4 Thule - 76.5N 3 2 1 1015 mol/cm2 0 4 Kiruna - 67.8N 3 2 1 1015 mol/cm2 0 4 Harestua-60.2N 3 2 1 1015 mol/cm2 0 4 Peterhof-59.9N 3 2 1 0 01/09 07/09 01/10 07/10 01/11 07/11 01/12 Fig. 4. Chlorine nitrate (ClONO2) column time series at Peterhof and several NDACC stations (Virolainen et al., Izvestiya, in press). 4 DISSEMINATION OF RESULTS 4.1 Data Reporting The data from routine TO observations on the network using M-124 are transmitted to the Hydrometeorological Center of Russia, CAO, and MGO daily. CAO archives the data received on-line, performs their primary quality control, and transmits them to the WOUDC. This data, together with that from other countries, is employed by the WOUDC for operational imaging of TO fields (http://woudc.org/). Also, CAO performs operational mapping of TO distribution over Russia and the neighboring countries, reveals anomalies and analyzes the reasons for their origination. At the MGO, the data undergo more thorough quality control, which enables assessing the performance of separate instruments, data correction, and transmission of final results to the WOUDC. М-124 ozonometers having been employed on the network for over 25 years, a considerable number of cases with the measurement scale deviations at observational sites occurs despite instrument upgrading fulfilled. Therefore, the measurement data have to be thoroughly verified, leading, sometimes, to extra ozonometer calibration, which detains presentation of the verified data to the WOUDC. The WOUDC also regularly receives TO and UV data measured with Brewer spectrophotometers at Kislovodsk, Obninsk, and Tomsk stations. SAOZ measurements from the Russian stations of Zhigansk and Salekhard can be readily available on-line at the site of the Data Acquisition Center in France http://gosic.org/gcos/SAOZ-data-access.htm). Measurements of NO2 content in the stratospheric column and atmospheric boundary layer are regularly transmitted from Zvenigorod Research Station of the Institute of Atmospheric Optics, RAS, to the NDACC, and are readily available at (http://www.ndacc.org/). 4.2 Information to the public Analyses of the current ozone layer state are presented by CAO in the quarterly reviews of the journal “Meteorologia i Gidrologia” (with the English version disseminated by Springer Publishing House). Annually, the reviews include data on long-term changes of the ozone layer over Russia, which are compared with those observed in other regions of the globe. Information about the ozone layer state over Russia is also published annually in “Reports on the features of climate on the territory of the Russian Federation” and “Reviews of the environment state and pollution in the Russian Federation” presented by Roshydromet. The technology of TO and UV- index forecasting for the Russian territory has been developed by CAO in cooperation with the Hydro-meteorological Center of Russia. TO forecasting uses current TO observations and weather parameter predictions. To determine the current state and forecast UV-B irradiance fields, observational data and forecasts of TO, cloudiness, and underlying surface albedo are employed. In warm seasons, maximum probable UV-index forecast, with indication of cloud amount, for the current and next 24 hours on the territory of Russia is presented at the website of the Hydrometcenter of Russia (http://meteoinfo.ru/). This site also contains information about possibly high UV-B irradiance in the case of high UV-index values predicted, the vulnerable territory is indicated, and recommendation for protective measures to be taken by different groups of the population are given. The methodology for predicting TO and UV-index is available in Russian at (http://method.meteorf.ru/methods/pollut/uv/uv.html). 5 RELEVANT SCIENTIFIC PAPERS Reviews: Elansky N.F. Russian studies of atmospheric ozone in 2007–2011. // Izvestiya, Atmospheric and Oceanic Physics. 2012. V. 48. No. 3. P. 281-298. Krivolutsky A.A., Repnev A.I. Results of Russian studies of the middle atmosphere, 2007–2010. // Izvestiya, Atmospheric and Oceanic Physics. 2012. V. 48. No. 3. P. 299-308. Larin I.K. Russian Investigations in atmospheric chemistry for 2007–2010. // Izvestiya, Atmospheric and Oceanic Physics. 2012. V. 48. No. 3. P. 272–280. Timofeev Yu.M., Shul’gina E.M. Russian investigations in the field of atmospheric radiation in 2007–2010. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 1. P. 19–36. Original papers: Ananiev L.B., Zvyagintsev A.M., Kuznetsova I.N., Nakhaev M.I. Special features of total ozone and circulations in low stratosphere during winter-spring 2011. // Proceedings of Hydrometcentre of Russia. 2012. V. 347. P. 44-60 (in Russian). Bazhenov O.E., Burlakov V.D. Anomalous decrease of the level of the total ozone content over Tomsk and northern territory of Russia in March-April 2011. // Atmospheric and Oceanic Optics (Tomsk). 2011. V. 24. No. 10. P. 915-919 (in Russian). Bekoryukov V.I., Glazkov V.N., Fedorov V.V. Analysis of time series of global mean values of thermodynamic and circulation parameters of the atmosphere and concentrations of ozone and water vapor. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 1. P. 67–76. Belikov Yu.E., Nikolaishvili S.Sh. Possible mechanism of ozone depletion on ice crystals in the polar stratosphere. // Russian Meteorology and Hydrology. 2012. V. 37. No. 10. P. 666– 673. Bukin O.A., An N.S., Pavlov A N., Stolyarchuk S.Yu., and Shmirko K.A. Effect that jet streams have on the vertical ozone distribution and characteristics of tropopause inversion layer in the far east region. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 5. P. 610-618. Cheremisin A.A., Marichev V.N., Novikov P.V. Polar stratospheric cloud transfer from Arctic regions to Tomsk in January, 2010. // Atmospheric and Oceanic Optics (Tomsk). 2013. V. 26. No. 2. P. 93-99 [in Russian]. Chubarova N., Zhdanova Ye. Ultra-violet resources over the territory of Russia under clear sky situation. // Vestnik of Moscow university. Ser. 5, Geography. 2012. No. 6. P. 9-19 (in Russian). Chubarova N., Zhdanova Ye. Ultraviolet resources over Northern Eurasia // Journal of Photochemistry and Photobiology B: Biology. 2013. V. 127. P. 38-51. Chubarova N., Zhdanova Ye. The assessment of UV resources over Northern Eurasia. AIP Conf. Proc. 1531. 2013. P. 764-767. Frey W., ..., Ulanovsky A., Sitnikov N.M. et al. In-situ measurements of tropical cloud properties in the West African monsoon: upper tropospheric ice clouds, mesoscale convective system outflow, and subvisual cirrus. // Atmos. Chem. Phys. 2011. V. 11. P. 5569-5590. Gavrilov N.M., Makarova M.V., Poberovskii A.V., Timofeyev Yu.M. Comparisons of CH 4 satellite GOSAT and ground-based FTIR measurements near Saint-Petersburg (59.9°N, 29.8°E). // Atmos. Meas. Tech. Discuss. 2013. V. 6. P. 7041–7062. Gruzdev A.N. Quasi-biennial variations in the total NO2 content. // Doklady Earth Sciences. 2011a. Т. 438. № 2. С. 837-841. Gruzdev A.N. Weekly cycle in the atmosphere. // Doklady Earth Sciences. 2011b. V. 439. No. 1. P. 1034-1038. Gruzdev A.N., Elokhov A.S. Variability of stratospheric and tropospheric nitrogen dioxide observed by the visible spectrophotometer at Zvenigorod, Russia. // Int. J. Remote Sensing. 2011. V. 32. No. 11. P. 3115-3127. Gruzdev A.N., Isakov A.A., Elokhov A.S. Analysis of weekly cycles in surface aerosol and NO2 at Zvenigorod Scientific Station, IAP RAS. // Atmospheric and Oceanic Optics (Tomsk). 2012. V. 25. No. 10. P. 884-889 (in Russian). Gruzdev A.N. Analysis of the weekly cycle in the atmosphere near Moscow. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 2. P. 137–147. Gruzdev A.N., Elokhov A.S. Negative anomaly of the stratospheric NO2 content over Zvenigorod at the end of March and beginning of April 2011. // Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section. 2013a. V. 448, Part 1. P. 126-130. Gruzdev A.N., Elokhov A.S. New results of validation of OMI NO2 measurements using data of measurements at Zvenigorod Scientific Station. // Earth Res. from Space. 2013b. V. No. 1. P. 16-27 (in Russian). Huntrieser H., ..., Ulanovsky A. et al. Mesoscale convective systems observed during AMMA and their impact on the NOx and O3 budget over West Africa. // Atmos. Chem. Phys. 2011. Т. 11. С. 2503-2536. Ionov D.V., Poberovskii A.V. Nitrogen dioxide in the air basin of St. Petersburg: Remote measurements and numerical simulation. // Izvestiya, Atmospheric and Oceanic Physics. 2012. V. 48. No. 4. P. 373-383. Ionov D.V., Kshevetskaya M.A., Timofeev Yu.M., Poberovskii A.V. Stratospheric NO2 content according to data from ground-based measurements of solar IR radiation. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 5. P. 519–529. Ivlev G.A., Belan B.D., Dorokhov V.M., Tereb N.V. Spectral observations of the total ozone content variation in Obninsk and Tomsk in 2011 and 2012. // Atmospheric and Oceanic Optics (Tomsk). 2013. V. 26. No. 4. P. 325-331 (in Russian). Khaykin S. M., Engel I., Vömel H., Formanyuk I.M., Kivi R., Korshunov L.I., Krämer M., Lykov A.D., Meier S., Naebert T., Pitts M.C., Santee M.L., Spelten N., Wienhold F.G., Yushkov V.A., Peter T. Arctic stratospheric dehydration - Part 1: Unprecedented observation of vertical redistribution of water. // Atmos. Chem. Phys. 2013. V. 13. P. 11503-11517, Kostsov V.S., Poberovsky A.V., Osipov S.I., Timofeyev Yu.M. Multiparameter technique for interpreting ground-based microwave spectral measurements in the problem of ozone vertical profile retrieval. // Atmospheric and Oceanic Optics (Tomsk). 2012. V. 25. No. 4. P. 269275. Kramchaninova E.K., Uspensky A.B. Monitoring the total atmospheric ozone content using data collected by the Elektro-L Russian geostationary meteorological satellite. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 9. P. 986-992. Krasil’nikov A.A., Kulikov Yu.Yu., Ryskin V.G., Demkin V.M., Kukin L.M., Mikhailovskii V.L., Shanin V.N., Sheiner M.Z., Shumilov V.A., Shchitov A.M. A new compact microwave spectroradiometer–ozonometer. // Instruments and Experimental Techniques. 2011. V. 54. No. 1. P. 118-123 Manney G.L., ..., Dorokhov V., ..., Makshtas A., ..., Zinoviev N.S. Unprecedented Arctic ozone loss in 2011 // Nature. 2011. V. 478. P. 469–475. Marichev V.N., Matvienko G.G., Lisenko A.A., Iljushik V.Yu., Kulikov Yu.Yu., Krasilnikov A.A., Ryskin V.G., Bychkov V.V. First results of complex experiment on sounding the middle atmosphere in optical and millimeter waves (above Tomsk). // Atmospheric and Oceanic Optics (Tomsk). 2012. V. 25. No. 12. P. 1091-1095 [in Russian]. Pastel M., Pommereau J.-P., Goutail F., Richter A., Pazmino A., Ionov D. Comparison of long term series of total ozone and NO2 column measurements in the southern tropics by SAOZ/NDACC UV-Vis spectrometers and satellites. // Atmos. Meas. Tech. Discuss. 2013. V. 6. P. 4851–4893. Ploeger F., ..., Ulanovski A. et al. Insight from ozone and water vapour on transport in the tropical tropopause layer (TTL). // Atmos. Chem. Phys. 2011. V. 11. P. 407-419. Polyakov A.V., Timofeev Yu.M., Poberovskii A.V., Yagovkina I.S. Seasonal variations in the total content of hydrogen fluoride in the atmosphere. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 6. P. 760-765. Polyakov A.V., Timofeev Yu.M., Poberovskii A.V. Ground-based measurements of total column of hydrogen chloride in the atmosphere near St. Petersburg. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 4. P. 411–419. Polyakov A.V., Timofeyev Yu.M., Walker K.A. Comparison of the satellite and ground based measurements of the hydrogen fluoride content in the atmosphere. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 9. P. 1002-1005. Rozanov S.B., Ignatyev A.N., Kropotkina E.P., Lukin A.N., Solomonov S.V. Investigations of the atmospheric ozone vertical distribution by millimeter wave remote sensing techniques. // Vestnik of the Mari El’s State University. Ser. “Telecommunication and radio engineering”. 2011. No. 3 (13). С. 3-12 (in Russian). Ryskin V.G., Zinchenko I.I., Krasil’nikov A.A., Kulikov Yu.Yu., Nosov V.I., Orozobakov T.O., Orozobakov A.T., Sayakbaeva B.B. Stratospheric ozone distribution features from the results of simultaneous ground-based microwave measurements in Nizhni Novgorod and Kyrgyzstan // Russian Meteorology and Hydrology. 2012. V. 37. No. 10. P. 659–665. Semakin S.G., Poberovskii A.V., Timofeev Yu.M. Ground-Based Spectroscopic Measurements of the Total Nitric Acid Content in the Atmosphere. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 3. P. 294–297. Shalamyansky A.M. Сonception of interaction of atmospheric ozone and air mass in the Northern Hemisphere. // Proceedings of Voeikov Main Geophysical Observatory. 2013. V. 568. P. 173-194 (in Russian). Shtyrkov O.V. Ozone concentration measurements by spectrophotometer SFM-2 from “Meteor-2” satellite. // Russian Meteorology and Hydrology. 2012. V. 37. No. 11. P. 83-91 (only in Russian). Solomonov S.V., Gaikovich K.P., Kropotkina E.P., Rozanov S.B., Lukin A.N., Ignat’ev A.N. Remote sensing of atmospheric ozone at millimeter waves. // Radiophysics and Quantum Electronics. 2011. V. 54. No. 2. P. 102-110. Solomonov S.V., Kropotkina E.P., Rozanov S.B., Ignat'ev A.N., Lukin A.N. Features of the Altitude_Time Distribution of Ozone over Moscow during the Strong Ozone Depletion in Spring 2011 and during the Statospheric Warming in 2010 According to Observations at Millimeter Wavelengths. // Bulletin of the Lebedev Physics Institute. 2012. V. 39. No. 10. P. 277283. Virolainen Ya.A., Timofeev Yu.M., Ionov D.V., Poberovskii A.V., Shalamyanskii A.M. Ground-based measurements of total ozone content by the Infrared method. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 4. P. 480–490. Virolainen Ya.A., Timofeyev Yu.M., Poberovsky A.V. Intercomparison of satellite and ground-based ozone total column measurements. // Izvestiya, Atmospheric and Oceanic Physics. 2013. V. 49. No. 9. P. 993-1001. Visheratin K.N. Relationship between phases of quasi-decadal oscillations of total ozone and the 11-year Solar cycle. // Geomagnetism and Aeronomy. 2012. V. 52. No. 1. P. 94-102. von Hobe M., …, Khaykin S.M., …, Sitnikov, N., …, Ulanovski A., …, Yushkov V. et al. Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results. // Atmos. Chem. Phys. 2013. V. 13. P. 9233-9268 von Hobe M., …, Ulanovsky A., Sitnikov N., Shur G., Yushkov V. et al. Evidence for heterogeneous chlorine activation in the tropical UTLS. // Atmos. Chem. Phys. 2011. V. 11. P. 241-256. Wohltmann I., ..., Ulanovsky A., Yushkov V. Uncertainties in modelling heterogeneous chemistry and Arctic ozone depletion in the winter 2009/2010. // Atmos. Chem. Phys. 2013. V. 13. P. 3909-3929. Yagovkina I.S., Polyakov A.V., Poberovskii A.V., Timofeev Yu.M. Spectroscopic measurements of total CFC-11 freon in the atmosphere near St. Petersburg. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 2. P. 186-189. Zaripov R.B., Konovalov I.B., Kuznetsova I.N., Belikov I.B., Zvyagintsev A.M. WRF ARW and CHIMERE models for numerical forecasting of surface ozone concentration. // Russian Meteorology and Hydrology. 2011. V. 36. No. 4. P. 249–257. Zhdanova E.Yu., Chubarova N.E. Estimation of different atmospheric parameters impact on biologically active UV irradiance according to calculations and measurements. // Atmospheric and Oceanic Optics (Tomsk). 2011. V. 24. No. 9. P. 775-781 [in Russian]. Zhdanova Ye., Chubarova N., Nezval Ye. A method of estimating cloud transmission in the UV spectral range using data from different satellite measurements and reanalysis. - AIP Conf. Proc. 1531. 2013. P. 911-914. Zubov V.A., Rozanov E.V., Rozanova I.V., Egorova T.A., Kiselev A.A., Karol’ I.L., Schmutz V. Simulation of changes in global ozone and atmospheric dynamics in the 21st century with the chemistry–climate model SOCOL. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 3. P. 301–312. Zubov V., Rozanov E., Egorova T., Karol I., Schmutz W. Role of external factors in the evolution of the ozone layer and stratospheric circulation in 21st century // Atmos. Chem. Phys. 2013a. V. 13. P. 4697-4706. Zubov V.A., Rozanov E.V., Karol I.L., Egorova T.A., Kiselev А.А., Ozolin Yu.E. Modelling variability of the vitamin D UV-radiation for 21st century. // Proceedings of Voeikov Main Geophysical Observatory. 2013b. V. 568. P. 118-136 (in Russian). Zuev V.V., Bondarenko S.L., Zueva N.E. Analysis of volcanogenic perturbations of the subarctic ozonosphere on the basis of space monitoring data. // Izvestiya, Atmospheric and Oceanic Physics. 2011. V. 47. No. 9. P. 1032-1038. Zvyagintsev A.M., Kuznetsova I.N., Kuznetsov G.I. About evolution of the Antarctic ozone hole. // Atmospheric and Oceanic Optics (Tomsk). 2012. V. 25. No. 7. P. 580–583 (in Russian). Zvyagintsev A.M., Kuznetsov G.I., Kuznetsova I.N. Ozone anomalies in spring over Russia. // Russian Meteorology and Hydrology. 2013. V. 38. No. 5. P. 297–303. 6 FUTURE PLANS At present, Roshydromet ozone monitoring network is being retooled with up-todata instrumentation. Specialist from the MGO and St. Petersburg’s optical institutes have developed an automated UV ozone spectrometer (UVOS) enabling measurements of total ozone and spectral composition of incident UV radiation in 290-400 nm range. The instrument is meant for operation under any working conditions on the Russian territory. The manufacture of the instrument has begun, and 14 stations are planned to be equipped with the new tool in 2014. The quality of UVOS performance is expected to be tested during Dobson spectrophotometer calibration in Hohenpeissenberg (Germany) on 3-14 June 2014. In July 2014, the new instrument will be presented at the WMO Technical Conference in St. Petersburg. 7 NEEDS AND RECOMMENDATIONS