Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Oleg S. Ugolnikov"'
Autor:
Oleg S. Ugolnikov, Igor A. Maslov
Publikováno v:
Cosmic Research. 59:89-95
Abstract The intensity and polarization of the twilight-sky background were measured during the epoch of “purple lights” after the Raikoke volcanic eruption in the summer of 2019. The increase in brightness paired with the decrease in polarizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e037dbb2689ba1c9a870482a329e7f0c
https://doi.org/10.1134/s0010952521020076
https://doi.org/10.1134/s0010952521020076
Autor:
Oleg S. Ugolnikov
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 243:106024
This paper describes the wide-field three-color observations of an expanded field of noctilucent clouds modulated by a one-dimensional gravity wave. Long wave crests were aligned by a small angle to the solar vertical in the sky. This made possible s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9feeb438f90718e92a887f65c11240c
https://doi.org/10.1016/j.jastp.2023.106024
https://doi.org/10.1016/j.jastp.2023.106024
Autor:
Igor A. Maslov, Oleg S. Ugolnikov
Publikováno v:
Journal of Aerosol Science. 127:93-101
The method of detection of light scattering on stratospheric aerosol particles on the twilight sky background is considered. It is based on the data on sky intensity and polarization in the solar vertical at zenith distances of up to 50° from the su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edca38bfcd5d2315eae13fae8c86f4f3
https://doi.org/10.1016/j.jaerosci.2018.10.006
https://doi.org/10.1016/j.jaerosci.2018.10.006
Autor:
Oleg S. Ugolnikov
Noctilucent or polar mesospheric clouds have become visually brighter and occurred more frequently during the recent years and decades. The study of possible reasons and relations with climate changes requires data on long-time trends of mean particl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e794d40bdf3bf72972d939761a1b6215
The intensive polar stratospheric vortex in the Arctic that shifted to northern Europe in the winter of 2019-2020 caused low temperatures and the frequent occurrence of polar stratospheric clouds followed by a significant decrease in the total ozone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b83c4f8a85a5fd4786f7ff55080c2ae
Publikováno v:
Cosmic Research. 56:255-266
The simplest version of the method of detection of single molecular scattering basing on the polarization measurements of the twilight sky background by all-sky cameras is considered. The method can be used during the transitive twilight (solar zenit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37d96fbac93a1d120c5d0d9ab4496a55
https://doi.org/10.1134/s001095251804007x
https://doi.org/10.1134/s001095251804007x
Autor:
Oleg S. Ugolnikov, Igor A. Maslov
Publikováno v:
Cosmic Research. 56:85-93
The first results of multiwave measurements of twilight background and the all-sky camera with a color (RGB) CCD matrix conducted in the spring and summer of 2016 in Central Russia (55.2° N, 37.5° E) have been discussed. The observations reveal the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::213e81005d11dd0e930f7b3da92cc94b
https://doi.org/10.1134/s0010952518020119
https://doi.org/10.1134/s0010952518020119
Autor:
Oleg S. Ugolnikov, Igor A. Maslov
Publikováno v:
Journal of Aerosol Science. 117:139-148
Polarization measurements of the twilight background with Wide-Angle Polarization Camera (WAPC) are used to detect the depolarization effect caused by stratospheric aerosol near 20 km altitude. Based on a number of observations in central Russia in s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50c97f9d3fbd2d88eecd98bb353d3e02
https://doi.org/10.1016/j.jaerosci.2018.01.002
https://doi.org/10.1016/j.jaerosci.2018.01.002
Publikováno v:
Космические исследования. :273-282
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8cd194500411a461f1ab9cb9c797b88
https://doi.org/10.31857/s002342060000353-6
https://doi.org/10.31857/s002342060000353-6
Autor:
Igor A. Maslov, Oleg S. Ugolnikov
Publikováno v:
Cosmic Research. 59:305-305
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02e65309345d0a89570bec1ef10aeadf
https://doi.org/10.1134/s0010952521110010
https://doi.org/10.1134/s0010952521110010