Atmospheric and Oceanic Optics
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Features of the Formation of Wavefront Slopes on the Telescope Aperture at Different Vertical Profiles of Optical Atmospheric Turbulence
Atmospheric and Oceanic Optics - Tập 33 - Trang 141-145 - 2020
The possibility of retrieving vertical profiles of atmospheric turbulence from
measurement data on local slopes of the wavefront is discussed. Estimates of
characteristics of wavefront distortion amplitudes are presented for different
atmospheric layers. Positions of the boundary of the atmospheric layer whose
total contribution to the maximal angles of the light arrival corresponds to the
average...
Study of the atmospheric boundary layer parameters under urban conditions with local and remote diagnostics facilities. Part. 2. Air temperature and heat flux
Atmospheric and Oceanic Optics - - 2011
We considered the results of the complex measurements of meteorological
parameters at two observation sites in Moscow with the help of Volna-4 sodar,
the Meteo-2 ultrasonic meteorological station, and the MTP-5 meteorological
temperature profiler. The frequency of occurrence and the heights of temperature
inversion boundaries under the conditions of woodland-park zone are analyzed.
The obtained re...
Impact of ozone depletion on degradation processes of coniferous forests in southern regions of Siberia
Atmospheric and Oceanic Optics - Tập 30 - Trang 342-348 - 2017
The main factors leading to the increase in the intensity of coniferous forests
focal drying in southern Siberia since the 1990s are analyzed. It is shown that
a significant factor that weakens the resistance of coniferous trees could be
long-term ozone depletion due to the permanent presence in the atmosphere of
volcanic aerosols caused by frequent Plinian eruptions in the volcano tropical
belt w...
Superstatistics of optical beam scintillations over thermally nonequilibrium paths
Atmospheric and Oceanic Optics - Tập 29 - Trang 415-421 - 2016
Methods are presented for the analysis of sounding optical beam intensity
variations at the exit of a nonstationary nonequilibrium path with the use of
the superstatistics and nonextensive statistical mechanics. The connections of
the first and the second moments of the experimentally recorded distribution
functions of the intensity scintillations inside the subapertures of the output
beam profile...
Effect of Laser Pulse Repetition Rate on the Detection Limits of the Elemental Composition of Pollutants in Aqueous Solutions by Femtosecond Laser Induced Breakdown Spectroscopy
Atmospheric and Oceanic Optics - Tập 34 - Trang 553-559 - 2022
The dependence of the limits of detection of Mg, Mn, Sr, Pb, Al, and B in
aqueous solutions on the laser pulse repetition rate is studied by femtosecond
laser induced breakdown spectroscopy for the laser pulse repetition rate from 50
to 1000 Hz. The limit of detection is shown to be the best at a laser pulse
repetition rate of 166 Hz for all the elements under study, other experimental
conditions ...
Applicability of Semiconductor Methane Sensors for Measuring Methane Emission from the Surface of a Water Body
Atmospheric and Oceanic Optics - Tập 36 - Trang 400-414 - 2023
The applicability of semiconductor methane sensors designed for detection of
explosive concentrations of gases in rooms to the study of background methane
contents in the atmosphere and its emissions from the surface of a water body is
studied. An experimental prototype of the methane sensor is designed. To
increase the accuracy of determining the methane content in air, the calibration
procedure ...
Vertical profiles of concentrations of carbon monoxide and nitrogen oxides in the urban atmospheric boundary layer
Atmospheric and Oceanic Optics - Tập 22 - Trang 617-625 - 2009
We studied variations of the vertical profiles of the carbon monoxide
concentration and the total concentration of nitrogen oxides in Moscow according
to the data of Ostankino TV Tower measurements during the winter. The
statistical relations between the variations of the concentrations of carbon
monoxide and nitrogen oxides at different altitudes are analyzed. Differences in
the diurnal behaviors...
Model of estimating aerosol depositions of benz(A)pirene in the vicinity of the novosibirsk electrode plant
Atmospheric and Oceanic Optics - Tập 22 - Trang 483-486 - 2009
A model of quantitative interpretation of the route observational data on
deposition fields in the vicinity of a point source is proposed in terms of a
kinematic scheme of the description of the distribution of heavy polydispersed
admixtures in the atmosphere. The model allowed for a numerical analysis of
experimental data on the benz(a)pirene pollution of snow cover at the end of the
winter seaso...
Retrieval of a wave front with small deformations from a sample of interferograms with a variable number and orientation of interference fringes
Atmospheric and Oceanic Optics - Tập 24 - Trang 572-578 - 2011
A new approach to phase retrieval from an interferogram through the application
of the classical fringe tracing method to a sample in which interference fringes
change their number and orientation is proposed. Wave fronts retrieved from
individual interferograms are averaged, and the quality of the studied surface
is judged by the estimate found. Phase averaging over several interferograms
allows ...
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