Zobrazeno 1 - 10
of 142
pro vyhledávání: '"D. Pancheva"'
Publikováno v:
Annales Geophysicae, Vol 28, Pp 677-685 (2010)
No abstract available.
Externí odkaz:
https://doaj.org/article/82f6742b4c084203956e0a99a4cc2894
Publikováno v:
Annales Geophysicae, Vol 27, Pp 975-987 (2009)
This paper is focused on the nonmigrating tidal activity seen in the SABER/TIMED temperatures that is related to the major sudden stratospheric warming (SSW) taking place in the Arctic winter of 2003/2004. The emphasis is on the nonmigrating diurn
Externí odkaz:
https://doaj.org/article/b98517a236d84ada82d739c630995ce3
Publikováno v:
Annales Geophysicae, Vol 27, Pp 617-622 (2009)
This short-communication presents a new method for assessing the amplitude modulation of the stationary planetary waves (SPWs). The suggested procedure allows estimating the contribution of the amplitude modulated SPWs to the field of the zonally
Externí odkaz:
https://doaj.org/article/0f13db06fb394c2694348feaa5346829
Publikováno v:
Annales Geophysicae, Vol 27, Pp 687-703 (2009)
The present paper is focused on the global spatial (altitude and latitude) structure, seasonal and interannual variability of the migrating semidiurnal tide derived from the SABER/TIMED temperature measurements for 6 years (January 2002–December
Externí odkaz:
https://doaj.org/article/4608898347334231a3ae2523eaca5492
Autor:
D. Pancheva, P. Mukhtarov, N. J. Mitchell, B. Andonov, E. Merzlyakov, W. Singer, Y. Murayama, S. Kawamura, J. Xiong, W. Wan, W. Hocking, D. Fritts, D. Riggin, C. Meek, A. Manson
Publikováno v:
Annales Geophysicae, Vol 26, Pp 467-483 (2008)
The coupling of the dynamical regimes in the high- and low-latitude stratosphere and mesosphere during the major SSW in the Arctic winter of 2003/2004 has been studied. The UKMO zonal wind data were used to explore the latitudinal coupling in the
Externí odkaz:
https://doaj.org/article/83ae408b7f7541abbd5efba7c7dde14f
Autor:
H. Takahashi, C. M. Wrasse, D. Pancheva, M. A. Abdu, I. S. Batista, L. M. Lima, P. P. Batista, B. R. Clemesha, K. Shiokawa
Publikováno v:
Annales Geophysicae, Vol 24, Pp 3343-3350 (2006)
Common periodic oscillations have been observed in meteor radar measurements of the MLT winds at Cariri (7.4° S, 36.5° W) and Ascension Island (7.9° S, 14.4° W) and in the minimum ionospheric virtual height, h'F, measured at Fortaleza (3.9° S
Externí odkaz:
https://doaj.org/article/e8fe7c99bb6a4c3b9ec50ef292bd4442
Autor:
Y. I. Portnyagin, T. V. Solovjova, N. A. Makarov, E. G. Merzlyakov, A. H. Manson, C. E. Meek, W. Hocking, N. Mitchell, D. Pancheva, P. Hoffmann, W. Singer, Y. Murayama, K. Igarashi, J. M. Forbes, S. Palo, C. Hall, S. Nozawa
Publikováno v:
Annales Geophysicae, Vol 22, Pp 3395-3410 (2004)
The Arctic MLT wind regime parameters measured at the ground-based network of MF and meteor radar stations (Andenes 69° N, Tromsø 70° N, Esrange 68° N, Dixon 73.5° N, Poker Flat 65° N and Resolute Bay 75° N) are discussed and compared with
Externí odkaz:
https://doaj.org/article/58515243c7cd46fca6bb905a61db43c7
Autor:
E. Merzlyakov, D. Pancheva, N. Mitchell, J. M. Forbes, Yu. I. Portnyagin, S. Palo, N. Makarov, H. G. Muller
Publikováno v:
Annales Geophysicae, Vol 22, Pp 773-788 (2004)
Results from the analysis of MLT wind measurements at Dixon (73.5°N, 80°E), Esrange (68°N, 21°E), Castle Eaton (UK) (53°N, 2°W), and Obninsk (55°N, 37°E) during summer 2000 are presented in this paper. Using S-transform or wavelet analysis,
Externí odkaz:
https://doaj.org/article/1558aafecd8a45c19e75898065f6086f
Publikováno v:
Annales Geophysicae, Vol 22, Pp 387-404 (2004)
Some preliminary results about the planetary wave characteristics observed during the first seven months (October 2001-April 2002) of observations over Ascension Island (7.9°S, 14.4°W) are reported in this study. The zonal wind is dominated by th
Externí odkaz:
https://doaj.org/article/5070b83a78d8491fab9662f17ca17dc6
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1807-1819 (2002)
The basic aim of this ‘case study’ is to investigate the variability in the maximum height of the ionospheric F2-layer, hmF2, with periods of planetary waves (2–30 days), and to make an attempt to determine their origin. The hourly data o
Externí odkaz:
https://doaj.org/article/06ddb4b0ca05464ca39572c483ef9980