Zobrazeno 1 - 10
of 39
pro vyhledávání: '"N. J. Schuch"'
Autor:
K. Munakata, Y. Hayashi, M. Kozai, C. Kato, N. Miyashita, R. Kataoka, A. Kadokura, S. Miyake, K. Iwai, E. Echer, A. Dal Lago, M. Rockenbach, N. J. Schuch, J. V. Bageston, C. R. Braga, H. K. Al Jassar, M. M. Sharma, M. L. Duldig, J. E. Humble, I. Sabbah, P. Evenson, T. Kuwabara, J. Kóta
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 283 (2024)
This paper presents the global analysis of two extended decreases in the galactic cosmic-ray intensity observed by worldwide networks of ground-based detectors in 2012. This analysis is capable of separately deriving the cosmic-ray density (or omnidi
Externí odkaz:
https://doaj.org/article/8641d623797849dabe63779e83dbd61a
Autor:
J. Moro, J. Xu, C. M. Denardini, L. C. Araújo Resende, R. Pereira Silva, S. Su Chen, G. A. da Silva Picanço, L. Zhengkuan, H. Li, C. Yan, C. Wang, N. J. Schuch
Publikováno v:
Annales Geophysicae, Vol 38, Pp 457-466 (2020)
In this work we analyze the ionograms obtained by the recent digisonde installed in Santa Maria (29.7∘ S, 53.7∘ W, dip angle = −37∘), Brazil, to calculate the monthly averages of the F2 layer critical frequency (foF2), its peak height
Externí odkaz:
https://doaj.org/article/d7c17fd8da1a46a1aaf971dc698f6048
Autor:
C. Bresciani, G. D. Bittencourt, J. V. Bageston, D. K. Pinheiro, N. J. Schuch, H. Bencherif, N. P. Leme, L. V. Peres
Publikováno v:
Annales Geophysicae, Vol 36, Pp 405-413 (2018)
Ozone is one of the chemical compounds that form part of the atmosphere. It plays a key role in the stratosphere where the ozone layer is located and absorbs large amounts of ultraviolet radiation. However, during austral spring (August–November
Externí odkaz:
https://doaj.org/article/2bbc061e2b1b4a45a45aca1aad69d8ec
Publikováno v:
Annales Geophysicae, Vol 36, Pp 301-310 (2018)
Nowadays, the study of the upper atmosphere is increasing, mostly because of the need to understand the patterns of Earth's atmosphere. Since studies on global warming have become very important for the development of new technologies, understandi
Externí odkaz:
https://doaj.org/article/26f9e2f7dfe946869df9cbc022b3c6ce
Autor:
G. D. Bittencourt, C. Bresciani, D. Kirsch Pinheiro, J. V. Bageston, N. J. Schuch, H. Bencherif, N. P. Leme, L. Vaz Peres
Publikováno v:
Annales Geophysicae, Vol 36, Pp 415-424 (2018)
The Antarctic ozone hole is a cyclical phenomenon that occurs during the austral spring where there is a large decrease in ozone content in the Antarctic region. Ozone-poor air mass can be released and leave through the Antarctic ozone hole, thus
Externí odkaz:
https://doaj.org/article/2c9768cba14d4991a1f106716c3737aa
Autor:
G. A. Giongo, J. V. Bageston, P. P. Batista, C. M. Wrasse, G. D. Bittencourt, I. Paulino, N. M. Paes Leme, D. C. Fritts, D. Janches, W. Hocking, N. J. Schuch
Publikováno v:
Annales Geophysicae, Vol 36, Pp 253-264 (2018)
The main goals of this work are to characterize and investigate the potential wave sources of four mesospheric fronts identified in the hydroxyl near-infrared (OH-NIR) airglow images, obtained with an all-sky airglow imager installed at Comandante
Externí odkaz:
https://doaj.org/article/459baf5626a045a38241a1954ddc6beb
Autor:
L. Vaz Peres, H. Bencherif, N. Mbatha, A. Passaglia Schuch, A. M. Toihir, N. Bègue, T. Portafaix, V. Anabor, D. Kirsch Pinheiro, N. M. Paes Leme, J. V. Bageston, N. J. Schuch
Publikováno v:
Annales Geophysicae, Vol 35, Pp 25-37 (2017)
This paper presents 23 years (1992–2014) of quasi-continuous measurements of the total ozone column (TOC) over the Southern Space Observatory (SSO) in São Martinho da Serra, Brazil (29.26° S, 53.48° and 488 m altitude). The TOC was measured
Externí odkaz:
https://doaj.org/article/e7eeadff5d474018860235f93aa15f9d
Publikováno v:
Annales Geophysicae, Vol 34, Pp 411-419 (2016)
A comparative study of the quasi-16-day wave (QSDW) in the middle atmosphere using meteor radar observations and reanalysis data from three Brazilian stations, Sao Joao do Cariri (7.4° S, 36.5° W) (CA), Cachoeira Paulista (22.7° S, 45° W) (CP)
Externí odkaz:
https://doaj.org/article/da25e38d957645d092535589751e70a3
Publikováno v:
Annales Geophysicae, Vol 33, Pp 1183-1193 (2015)
We have applied a modified composite day analysis to the Hocking (2005) technique to study gravity wave (GW) momentum fluxes in the mesosphere and lower thermosphere (MLT). Wind measurements from almost continuous meteor radar observations during
Externí odkaz:
https://doaj.org/article/aeb16dbdfa9e4ba3935858c4d927b680
A comparison of two different techniques for deriving the quiet day curve from SARINET riometer data
Publikováno v:
Annales Geophysicae, Vol 30, Pp 1159-1168 (2012)
In this work, an upgrade of the technique for estimating the Quiet Day Curve (QDC) as proposed by Tanaka et al. (2007) is suggested. To validate our approach, the QDC is estimated from data acquired by the Imaging Riometer for Ionospheric Studies
Externí odkaz:
https://doaj.org/article/9839aad02efa43268b2ea027445086df