Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Atmospheric and Oceanic Optics

2019 year, number 1

1.
Spectral contributions of sections of power-law structure function of random processes with stationary increments. Part 2. The exponent is greater than one

V.A. Fedorov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: случайный процесс со стационарными приращениями, степенная структурная функция, спектральная плотность, спектральные вклады, random process with stationary increments, power-law structure function, spectral density, spectral contribution

Abstract >>
The frequency behavior of the spectral contributions of the initial, middle, and “finite” parts of the power-law structure function (with an exponent less than one) to the spectral density (SD) of a random process with stationary increments is considered. It is shown that it is much more complicated than the strictly positive monotonic power-law frequency dependence of the initial SD. The latter corresponds only to the behavior of the spectral contribution of the initial section of the given structure function. The analytical approximate dependences of the frequency behavior of all these spectral contributions are presented and analyzed. They are recommended for wide practical use.
																								



2.
Observations of the formaldehyde integral content in the lower troposphere in urban agglomerations of Moscow and Tomsk using DOAS technique

I.I. Bruchkouski1, A.N. Borovski2, A.V. Dzhola2, N.F. Elansky2, O.V. Postylyakov2, O.E. Bazhenov3, O.A. Romanovskii3, S.A. Sadovnikov3, Y. Kanaya4
1National Ozone Monitoring Research and Educational Center, Belarusian State University, 4, Nezavisimosti avenue, 2200301, Minsk, Republic of Belarus
2A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Pyzhevsky per., 3, 119017, Moscow, Russia
3V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
4Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yoko-hama, Kanagawa 236-0001, Japan
Keywords: формальдегид, HCHO, дифференциальная спектроскопия, дистанционное зондирование, пограничный слой атмосферы, Звенигородская научная станция, Сибирская лидарная станция, formaldehyde, differential spectroscopy, remote sensing, atmospheric boundary layer, Zvenigorod scientific station, Siberian lidar station

Abstract >>
Regular measurements of the formaldehyde integral content (IC) in the lower troposphere have been carried out in the area of influence of the Moscow urban agglomeration (Zvenigorod scientific station - ZSS) and in the southeastern part of Tomsk (Siberian lidar station - SLS) since 2009. The paper briefly describes the equipment and measurement techniques and presents the first results of the measurements. The excess of the mean level of the formaldehyde content at the ZSS above its level at Tomsk is shown. The most probable cause of higher values of formaldehyde during the east winds at the ZSS is the polluted Moscow air. According to the observations in Tomsk, the possible influence of polluted urban air on the formaldehyde content appears at temperatures greater than 25°С. According to observations at both stations, the positive dependence of the formaldehyde content on the air temperature was revealed.
																								



3.
Influence of aerogel texture on spectral line parameters of CO confined inside its pores

A.A. Solodov1,2, Yu.N. Ponomarev1,2, T.M. Petrova1, A.M. Solodov1, E.A. Glazkova3
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
3Institute of Strength Physics and Materials Science of the Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, 634021, Russia
Keywords: CO, аэрогель, Фурье-спектроскопия, aerogel, FTIR spectroscopy

Abstract >>
The influence of sintering of an aerogel sample on spectral lines parameters of the carbon monoxide confined inside its pores was studied for the first time. The measurements were conducted using в Bruker IFS 125HR spectrometer in the 4000-4400 cm-1 spectral region. It was shown that the sintering increased CO half-widths but did not affected rotational dependences of CO lines.
																								



4.
Direct radiation effects of smoke aerosol in the region of Tiksi station (Russian Arctic): preliminary results

T.B. Zhuravleva1, I.M. Nasrtdinov1, A.A. Vinogradova2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Pyzhevsky per., 3, 119017, Moscow, Russia
Keywords: солнечное излучение, метод Монте-Карло, черный углерод, радиационные эффекты аэрозоля, фоновый и дымовой аэрозоль, Арктика, solar radiation, Monte Carlo method, black carbon, radiation effect of aerosol, background and smoke aerosol, Arctic

Abstract >>
We presented model estimates of daily average direct radiation effects of smoke aerosol in the solar spectral range obtained using observations at Tiksi station in the period of anomalously high black carbon (ВС) concentration in the near-surface atmospheric layer (July 2014). These data are compared with radiation effect of aerosol characteristic for typical summer conditions in this region. It is shown that the monthly average radiation effects caused, on the one hand, by variations in optical characteristics of background aerosol and, on the other hand, by short-term outflows of BC from forest fires to the region of observations are comparable in value.
																								



5.
Traces of Canadian pyrocumulonimbus clouds in the stratosphere over Tomsk in June-July, 1991

V.V. Gerasimov1,2, V.V. Zuev1, E.S. Savelieva1
1Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, 634055, Tomsk, 10/3, Academichesky ave
2National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
Keywords: стратосферный аэрозоль, лидар, Пинатубо, пирокумулятивное облако, крупный лесной пожар, stratospheric aerosol, lidar, Pinatubo, pyrocumulonimbus, massive forest fire

Abstract >>
We revise the results of lidar measurements of stratospheric aerosol over Tomsk that were made from June 29 to July 14, 1991, and initially interpreted as aerosol layers after the Pinatubo eruption. Using the NOAA HYSPLIT trajectory model, we show that aerosol layers detected at altitudes of 12 and 14.2 km on June 29 and July 11, respectively, were the stratospheric smoke plume from massive forest fires occurred in Quebec, Canada, in June 1991. Biomass burning products reached the stratosphere via convective ascent within a pyrocumulonimbus (pyroCb) cloud that was detected at 100 km west of Baie-Comeau (Quebec, Canada) on June 19. Aerosol layers observed at altitudes between 11 and 16.5 km on July 8, 9, and 14 represented superpositions of the smoke plume from the Quebec pyroCb and the first traces of the Pinatubo eruption.
																								



6.
Algorithm for retrieval of atmospherical aerosol parameters from multispectral data of remote sensing

O.V. Nikolaeva, A.G. Chebykin
Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences, Miusskaya sq., 4, Moscow, 125047, Russia
Keywords: дистанционное зондирование, восстановление оптических параметров, аэрозоль, remote sensing, retrieval of optical parameters, aerosol

Abstract >>
A new algorithm for retrieval of aerosol parameters from multispectral reflectance data of remote sensing for transparent atmosphere is presented. Model reflectance as fractional-polinomial function of parameters being found is used. These parameters are aerosol and Rayleigh optical depths, aerosol single scatteting albedo, zenith angle of the sun, albedo of surface. Test relults for model problems are given.
																								



7.
Evalution of the TSUNM3 high-resolution mesoscale NWP model

A.V. Starchenko, I.V. Kuzhevskaya, L.I. Kizhner, N.K. Barashkova, M.A. Volkova, A.A. Bart
National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
Keywords: прогностическая модель высокого разрешения TSUNM3, погодные условия, оценка качества прогноза, характеристики качества прогноза, high resolution numerical weather prediction model TSUNM3, weather conditions, forecast verification, forecast quality characteristics

Abstract >>
The results of the forecast verification of the high-resolution mesoscale model TSUNM3 created at Tomsk State University are presented. The model is intended for forecasting weather elements at the surface and in the atmosphere boundary layer and is used in scientific researches to predict the state of the atmosphere in the Tomsk region up to an altitude of 2.5 km with a lead time of up to 40 hours. It has a higher spatial resolution (1 km) than the model COSMO-Ru14-Sib technology operatively functioning in the Siberian region (grid spacing is 13.2 km). The forecast quality of the temperature-humidity and dynamic characteristics of the atmosphere state by the TSUNM3 model is comparable to the quality of existing operational mesoscale models.
																								



8.
Conditions of occurrence and short-term forecast of strong squalls and tornadoes in European Russia

N.A. Kalinin, A.N. Shikhov, A.V. Bykov, I.O. Azhigov
Perm State National Research University, Russia, 614990, Perm, Bukireva street, 15
Keywords: шквалы, смерчи, синоптические условия, мезомасштабное моделирование, модель WRF, данные GFS, данные ECMWF, squalls, tornadoes, synoptic-scale environments, mesoscale simulation, WRF model, GFS data, ECMWF data

Abstract >>
Strong squalls and several tornadoes occurred in European Russia on May 30, 2018, and caused significant damage. The data on the squalls were received from weather stations. The data on tornado events were updated from the analysis of satellite information about tornado-induced forest damage. We describe synoptic-scale and mesoscale environments and possibilities of short-term forecast of severe weather outbreaks. The mesoscale simulation is carried out in the WRF model version 3.9.1.1 (3 km resolution) with data of GFS/NCEP and ECMWF ERA-5 global atmospheric models as initial conditions. The strong squalls are simulated with a satisfactory reliability. It is found that the reliability of the WRF model forecast is significantly higher when using ECMWF ERA-5 data
																								



9.
Optimization of parameters of a turbulent lidar

I.A. Razenkov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: атмосферная турбулентность, увеличение обратного рассеяния, лидар, atmospheric turbulence, backscatter enhancement effect, lidar

Abstract >>
The article presents a comparison of experimental and calculated data on the shape of the peak of backscattering enhancement in the propagation of a beam in a turbulent atmosphere. Two schemes of construction of a two-channel turbulent lidar are considered and calculations of the ratio of lidar echoes and the factor of turbulence influence on the average power of the scattered light on the receiver depending on the geometric characteristics of the receiver-transmitter are carried out. Recommended diameter transmit-receive aperture lidar is 50-70 mm. To create an eye-safe lidar with high potential, it is proposed to use a laser with a wavelength of 355 nm. The obtained estimate of the echo and of the influence of turbulence for day and twilight values of background light. The possibility of remote detection of turbulent zones in the troposphere is estimated for an ultraviolet turbulent lidar.
																								



10.
INFORMATION