DOI: https://doi.org/10.22201/igeof.00167169p.2004.43.1

Published: 2004-01-01

Article

The solar cycle in the temperature of the tropical stratosphere

Nieves Ortiz de Adler, Ana G. Elias

5-9

PDF (Español)

Upper atmosphere research at the Instituto Nacional de Pesquisas Espaciais of Brazil

R. Clemesha, P. P. Batista, H. Takahashi, D. Gobbi, A. F. de Medeiros, D. M. Simonich

11-16

PDF (Español)

Ozone and UV-B radiation anticorrelations at fixed solar zenith angles in southern Brazil

Ricardo André Guarnieri, Fernando Luís Guarnieri, Danieli Balbueno Contreira, Liana Franco Padilha, Ezequiel Echer, Damaris Kirsch Pinheiro, Augusta Maria Passaglia Schuch, Kazuo Makita, Nelson Jorge Schuch

17-22

PDF (Español)

Upper-atmosphere perturbations at subauroral latitudes during an intense geomagnetic storm

G. A. Mansilla, R. G. Ezquer

23-28

PDF (Español)

Observations of atmospheric gravity waves using airglow all-sky CCD imager at Cachoeira Paulista, Brazil (23° S, 45° W)

A. F. Medeiros, H. Takahashi, P. P. Batista, D. Gobbi , M. J. Taylor

29-39

PDF (Español)

Deceleration observed in the coronal mass ejection event of July 25, 1999

A. A. Dal Lago, R. Schwenn, G. Stenborg, W. D. González, A. L. C. de González, L. E. A. Vieira, E. Echer, F. L. Guarnieri, N. J. Schuch

41-45

PDF (Español)

Forecast of solar ejecta arrival at 1 AU from radial speed

S. Dasso, N. Gopalswamy, Alejandro Lara Sanchez

47-52

PDF (Español)

Observations of broadband solar UV-A irradiance at Santa Maria, Brazil (29°S, 53° W)2004-01-01

E. Echer, N. J. Schuch, K. Makita, S. Okano

53-59

PDF (Español)

The MEXART interplanetary scintillation array in Mexico

J. Américo González-Esparza, Armando Carrillo-Vargas, Ernesto Andrade, Román Pérez Enríquez, Stan Kurtz

61-73

PDF (Español)

Characteristics of coronal mass ejections in the near Sun interplanetary space

Alejandro Lara Sanchez, J. Américo González-Esparza, Nat Gopalswamy

75-82

PDF (Español)

Inferring the writhe of magnetic flux tubes from the evolution of active solar regions

M.C. López Fuentes, C.H. Mandrini, P. Démoulin, L. Van Driel-Gesztelyi

83-88

PDF (Español)

Numerical simulation of the cooling of a solar flare

César A. Mendoza-Briceño, Leonardo Sigalotti, Neyda Y. Añez-Parra

89-95

PDF (Español)

Time evolution of fine structures of a main sunspot in the SD108 and SD284 groups

Ernesto R. Rodríguez Flores, Ramón E. Rodríguez Taboada, Rafael Gámez Díaz

97-101

PDF (Español)

Reconstruction of the aa index on the basis of spectral characteristics

E. Echer, N. R Rigozo, M. P. Souza Echer, L. E. A. Vieira, D. J. R. Nordemann

103-111

PDF (Español)

Comparison between indices during geomagnetic disturbances

Patricia Fernández de Campra, Marta Zossi de Artigas

113-117

PDF (Español)

Diurnal variation of NmF2 associated with ExB drift at the equator during solar maxima

Teresita Heredia, Ana G. Elías

119-124

PDF (Español)

Diurnal variation of B parameters over Havana at low solar activity

Bienvenido Lazo Olazábal, Katy Alazo Cuartas, Miriam Rodríguez González, Alexander Calzadilla Méndez

125-128

PDF (Español)

GPS Total Electron Content measurements at low latitudes in Brazil for low solar activity

Aracy Mendes da Costa, J. Williams Vilas Boas, Edvaldo S. da Fonseca Junior

129-137

PDF (Español)