Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Plamen Mukhtarov"'
Publikováno v:
Remote Sensing, Vol 16, Iss 21, p 4046 (2024)
The main idea of the present study is to investigate in detail the time evolution of the spatial inhomogeneities connected with the ionospheric response to the geomagnetic storm registered in the period of 10–11 May 2024. The obtained ionospheric a
Externí odkaz:
https://doaj.org/article/1b74b9e7865c4143839fc1c35b59fd57
Autor:
Plamen Mukhtarov, Rumiana Bojilova
Publikováno v:
Atmosphere, Vol 15, Iss 8, p 913 (2024)
In the present work, the variations in Total Electron Content (TEC) induced by changes in the ionizing radiation of the Sun, which are related to the rotation period (about 27 days), were investigated. This study was based on a 30-year period. The re
Externí odkaz:
https://doaj.org/article/20171dbb779b4df98f2ca4bde3fde098
Publikováno v:
Atmosphere, Vol 15, Iss 4, p 478 (2024)
This paper presents climatological features of the longitudinal structures WN4, WN3, and WN2 and their drivers observed in the lower thermospheric temperatures and in the ionospheric TEC. For this purpose, two long-term data sets are utilized: the sa
Externí odkaz:
https://doaj.org/article/5baa8d9f6d234e18872c5ffad8cd0711
Autor:
Rumiana Bojilova, Plamen Mukhtarov
Publikováno v:
Atmosphere, Vol 15, Iss 3, p 278 (2024)
In the present paper, the response of the ionospheric Total Electron Content (TEC) at low latitudes during several geomagnetic storms occurring in different seasons of the year is investigated. In the analysis of the ionospheric response, the followi
Externí odkaz:
https://doaj.org/article/971c3aa305b34a0db34048d17e755b7e
Publikováno v:
Atmosphere, Vol 14, Iss 12, p 1762 (2023)
In this investigation, a comparison is presented between variations in temperature and ozone concentration at different altitude levels in the stratosphere for the Northern Hemisphere in the conditions of Sudden Stratospheric Warming (SSW) for the pe
Externí odkaz:
https://doaj.org/article/e7642d7f85db4a94ae2868199e6a1233
Autor:
Rumiana Bojilova, Plamen Mukhtarov
Publikováno v:
Universe, Vol 9, Iss 8, p 351 (2023)
A study of the behavior of the main characteristics of the ionosphere over Europe during the 26–28 February 2023 ionospheric storm was carried out in this present work. The additional influence of sudden stratospheric warming on the ionosphere was
Externí odkaz:
https://doaj.org/article/0e64fb5f2f7344b6b47c16fbdc0e1180
Autor:
Rumiana Bojilova, Plamen Mukhtarov
Publikováno v:
Remote Sensing, Vol 15, Iss 7, p 1739 (2023)
The present work examines the spatial and temporal distribution of positive and negative TEC anomalies on the global and regional scale. To study the local response of the ionosphere, foF2 data from ground ionosonde stations and TEC data from Madriga
Externí odkaz:
https://doaj.org/article/ae5795e97f4848579e56f7077b560ee2
Publikováno v:
Atmosphere, Vol 13, Iss 9, p 1455 (2022)
In the present work, the data from the monitoring of the biologically active ultraviolet (UV) radiation of the Sun at the National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences for the period 2007–2021 were used. Bas
Externí odkaz:
https://doaj.org/article/1209c23896244be780ac5757fe0f7c15
Publikováno v:
Atmosphere, Vol 13, Iss 6, p 918 (2022)
The present study examines a long-term statistical trend analysis of Total Ozone Content (TOC) data from the AURA satellite for latitudes 60° and 60° S. A methodology for eliminating the strong dependence on the season has been applied by introduci
Externí odkaz:
https://doaj.org/article/eefe991c84644ae6bbb76c0042dfe791
Publikováno v:
Atmosphere, Vol 13, Iss 5, p 774 (2022)
The present study aims to demonstrate the effects of horizontal grid resolution on the simulated pollution concentration fields over Bulgaria. The computer simulations are performed with a set of models used worldwide—the Weather Research and Forec
Externí odkaz:
https://doaj.org/article/a2181cb0566340619933afb2a2b350c2