Published in Atmospheric and Oceanic Optics
We present information on ozone concentration in the surface air layer in the second half of 2020. Data were obtained at 13 stations located in different regions of Russia. We estimated the excess over hygienic standards of the Russian Federation, both in the second half of the year and throughout 2020. It is shown that the daily average maximum pe...
Published in Atmospheric and Oceanic Optics
AbstractThe event of the autumn transport of PM10 particles from the east to the Black Sea water basin and coastal zones is analyzed, as well as the optical characteristics of suspended particles from field and satellite data. The variations in optical characteristics of PM10 particles are shown to correlate with an increase in the fluorescence int...
Published in Atmospheric and Oceanic Optics
AbstractAn optical circuit is designed for the ring cavity of an optical parametric oscillator (OPO) based on two series-mounted active elements—mercury thiogallate crystals (HgGa2S4) with the radiation tunable in the near- and mid-IR ranges (4.75–9.07 μm). The dependences of the radiation idler wavelength on the phase-matching angle and of the dis...
Published in Atmospheric and Oceanic Optics
AbstractH2O absorption lines broadened by air pressure were recorded in the 5900–6100-cm−1 spectral region with the use of a Bruker IFS 125 HR spectrometer. The intensities and broadening and shift coefficients of H2O absorption lines are determined for the Voigt profile and the modified Voigt profile which takes into account the dependence of the ...
Published in Atmospheric and Oceanic Optics
AbstractThe results of experimental and theoretical studies of the evolution of the small-scale transverse structure of high-power femtosecond laser radiation propagating in air in the multiple filamentation mode are presented. It has been found that the presence of intensity inhomogeneities in the initial transverse profile of the laser beam leads...
Published in Atmospheric and Oceanic Optics
AbstractWe present the results from laser granulometry of a nanosized fraction of aerosol substance and from UV spectrometry of water washouts from different-age needles in four plant species. It is estimated how the hydrothermal conditions influence the time variations in morphometric indices of needles and contamination of their surfaces by pheno...
Published in Atmospheric and Oceanic Optics
Abstract—Rainfall measurements with an OPTIOS optical precipitation gage and a standard Tretyakov O-1 gage for three summer months of 2020 are compared; a good agreement between them is shown. The comparison between the OPTIOS measurements with measurements with a similar optical rain gage mounted at a distance of 3 km and with the related data fro...
Published in Atmospheric and Oceanic Optics
Abstract—The 3–0 absorption band of carbon monoxide and the 2 0 0 13–0 0 0 01 band of carbon dioxide confined in aerogel were recorded using a Bruker IFS 125HR FTIR spectrometer. The parameters of spectral lines are determined; their dependences on rotational quantum numbers are derived. The parameters we found are compared with those for the 2–0 b...
Published in Atmospheric and Oceanic Optics
AbstractIn order to study the capabilities of a turbulent lidar, an experiment was carried out with a BSE-4 system, a meteorological measuring system, and an MTP-5 temperature profiler. The profile of the structural parameter of the refractive index \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepa...
Published in Atmospheric and Oceanic Optics
AbstractFormation conditions are considered and short-term forecast accuracy is estimated for six convective hazardous weather events or their clusters (outbreaks) recorded in the Ural region and eastern part of the European Russia in the warm period of 2020.
