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of 453
pro vyhledávání: '"J. LašTovička"'
Autor:
J. Laštovička
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 5783-5800 (2023)
This article reviews main progress in investigations of long-term trends in the mesosphere, thermosphere, and ionosphere over the period 2018–2022. Overall this progress may be considered significant. The research was most active in the area of tre
Externí odkaz:
https://doaj.org/article/77943b89d11a4438b14af3b9c0e3c29d
Publikováno v:
Journal of Geophysical Research: Space Physics. 128
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9181b2811d5637c893487ab4b173858
https://doi.org/10.1029/2022ja031097
https://doi.org/10.1029/2022ja031097
Publikováno v:
Annales Geophysicae, Vol 34, Pp 1191-1196 (2016)
Global climate change affects the whole atmosphere, including the thermosphere and ionosphere. Calculations of long-term trends in the ionosphere are critically dependent on solar activity (solar cycle) correction of ionospheric input data. The st
Externí odkaz:
https://doaj.org/article/c5658d1d793f4b7ca54edf64033078ff
Publikováno v:
Annales Geophysicae, Vol 32, Pp 353-366 (2014)
Reanalysis data are very useful for studying the stratosphere. They can be used for analysis of long-term trends (temperature, wind speed, humidity, etc.) or analysis of global atmospheric dynamics, etc. There are various reanalysis projects that
Externí odkaz:
https://doaj.org/article/59df28890ef3406a93ad26c0a3ed941d
Akademický článek
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Autor:
J. Laštovička
Publikováno v:
Annales Geophysicae, Vol 30, Pp 811-816 (2012)
Origin of long-term trends in the thermosphere-ionosphere system has been discussed since the beginning of trend studies. The two most prioritized explanations have been those via long-term increase of atmospheric concentration of greenhouse gases
Externí odkaz:
https://doaj.org/article/5eaa6d5ec1224b039d8c794bb576790b
Autor:
J. Laštovička, R. A. Akmaev, G. Beig, J. Bremer, J. T. Emmert, C. Jacobi, M. J. Jarvis, G. Nedoluha, Yu. I. Portnyagin, T. Ulich
Publikováno v:
Annales Geophysicae, Vol 26, Pp 1255-1268 (2008)
In the upper atmosphere, greenhouse gases produce a cooling effect, instead of a warming effect. Increases in greenhouse gas concentrations are expected to induce substantial changes in the mesosphere, thermosphere, and ionosphere, including a the
Externí odkaz:
https://doaj.org/article/efa75fcb64a34794bdfee88d475ccd6b
Publikováno v:
Annales Geophysicae, Vol 26, Pp 593-598 (2008)
This paper deals with two problems, methods of foF2 trend determination and origin of trends in foF2, both being controversial in current literature. We found that various regression-based methods and artificial neural network-based method of Yue
Externí odkaz:
https://doaj.org/article/904840970f00485ba16429eb0ab8e6cf
Publikováno v:
Annales Geophysicae, Vol 21, Pp 1543-1552 (2003)
Planetary waves are oscillations of very predominantly tropospheric origin with typical periods of about 2–30 days. Their dominant zonal wave numbers are 1, 2 and 3, i.e. the waves are of large-scale (global) character. The planetary wave typ
Externí odkaz:
https://doaj.org/article/177178d0b6d9400ba3b7f57461429cd3
Autor:
D. Burešová, J. Laštovička
Publikováno v:
Annales Geophysicae, Vol 18, Pp 987-991 (2000)
The hysteresis of foF2 is studied for several European stations over the whole 24-hour diurnal interval for the equinoctial months of the years just before and just after the solar cycle minimum for solar cycles 20 and 21. Based on previous result
Externí odkaz:
https://doaj.org/article/f8b917c42de0437ba9f0ea29487ff38d