Y. Sahai, V. W. J. H. Kirchhoff, N. M. Paes Lerne, C. Casiccia,
... spectrophotometers are used to study ozone trends at Cachoeira Paulista (22.7°S, 45.0°W) and Natal ( ... time series are from 1974 to 1997 for Cachoeira Paulista and from 1978 to 1997 at Natal. Using ... 0±1.2% per decade was found at Cachoeira Paulista for the period 1974 to 1997. At Natal ... The annual values of column ozone reported at Cachoeira Paulista are lower in the 1990's than in ...
Tópico(s): Atmospheric and Environmental Gas Dynamics
2000 - American Geophysical Union | Journal of Geophysical Research Atmospheres
J. R. Souza, M. A. Abdu, I. S. Batista, G. J. Bailey,
... 5°S) and at the low‐latitude location Cachoeira Paulista (22°S, 45°W, magnetic latitude = 15°S), ... 2 are then matched at both Fortaleza and Cachoeira Paulista to obtain the magnetic meridional winds over their ... f o F 2 diurnal variation pattern over Cachoeira Paulista, it was found necessary to include a small ... Fortaleza and at locations conjugate to Fortaleza and Cachoeira Paulista.
Tópico(s): Solar and Space Plasma Dynamics
2000 - American Geophysical Union | Journal of Geophysical Research Atmospheres
R. T. de Medeiros, M. A. Abdu, I. S. Batista,
... in this paper for the low‐latitude station, Cachoeira Paulista, in Brazil using ionospheric F layer peak height ... of vertical plasma drift on h max over Cachoeira Paulista by using a vertical drift model which is ... plasma drifts, and h max values deduced from Cachoeira Paulista ionograms, were the main inputs. The magnetic meridional ... the measurements by Fabri‐Perot technique available for Cachoeira Paulista. The results show varying agreements. The paper presents ...
Tópico(s): GNSS positioning and interference
1997 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Produção Nacional
Revisado por pares
Luciana Rodrigues de Araújo, Lourivaldo Mota Lima, P. P. Batista, B. R. Clemesha, H. Takahashi,
... from July 2004 to December 2008 and in Cachoeira Paulista (22.7° S, 45.0° W) from January ... vertical wavelengths of the 2-day wave over Cachoeira Paulista were larger than those at São João do ... São João do Cariri were larger than at Cachoeira Paulista. The 6–7 day amplitudes exhibited intra-seasonal ... winter, however, there was no clear seasonality over Cachoeira Paulista. The 16-day vertical wavelengths have assumed values ...
Tópico(s): Atmospheric Ozone and Climate
2014 - Copernicus Publications | Annales Geophysicae
Produção Nacional
Revisado por pares
H. Chandra, Som Sharma, M. A. Abdu, I. S. Batista,
... with the occurrence features of range spread over Cachoeira Paulista, a station near the anomaly crest region in ... sector. The occurrence of range spread-F over Cachoeira Paulista shows strong seasonal dependence with a distinct maximum ... sunspot years. The occurrence of range spread over Cachoeira Paulista is much higher than over Ahmedabad.
Tópico(s): Climate variability and models
2003 - Elsevier BV | Advances in Space Research
Produção Nacional
Revisado por pares
J. H. A. Sobral, M. A. Abdu, P. Muralikrishna, J. LaBelle, V. M. Castilho, C. J. Zamlutti,
... 12'W), and the low latitude station was Cachoeira Paulista (22°41'S, 45°00'W). The ionosonde ... IRI representation for hmF2 over off-equatorial station Cachoeira Paulista is in rather better agreement with the experimental ... the data for both the equatorial region and Cachoeira Paulista, although the model appears to systematically overestimate foF2 ...
Tópico(s): Solar and Space Plasma Dynamics
2003 - Elsevier BV | Advances in Space Research
Produção Nacional
Y. Sahai, J. Aarons, M. Mendillo, Jeffrey Baumgardner, J. A. Bittencourt, H. Takahashi,
... an all-sky imaging system was operated at Cachoeira Paulista (22.7° S, 45.0° W, dip latitude ... photometer and VHP polarimeter observations were conducted at Cachoeira Paulista, with ionospheric soundings carried out at both C. ... the maximum projection that can be seen from Cachoeira Paulista. This holds true even during years of low ...
Tópico(s): Atmospheric Ozone and Climate
1994 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
M. A. Abdu, R. T. de Medeiros, Yoshiharu Nakamura,
... 1.8°S) and the low‐latitude station, Cachoeira Paulista (22°S, 45°W, dip latitude 14°S) ... time. While all the spread F events over Cachoeira Paulista are accompained by such events over Fortaleza, the ... stations are approximately linearly related, an event over Cachoeira Paulista is observed only for those that have durations ...
Tópico(s): Solar and Space Plasma Dynamics
1983 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Produção Nacional
Revisado por pares
H. Takahashi, D. Gobbi, P. P. Batista, S. M. L. Melo, N. R. Teixeira, R. A. Buriti,
... 4 W) and the other at lowmiddle latitude Cachoeira Paulista (22.7 S, 45.0 W). Monthly averaged ... on these emissions. Harmonic analysis revealed that the Cachoeira Paulista data are mainly represented by a 12 hour ... These facts lead us to conclude that the Cachoeira Paulista data are mainly controlled by the semidiurnal tidal ...
Tópico(s): Atmospheric chemistry and aerosols
1998 - Elsevier BV | Advances in Space Research
Produção Nacional
Revisado por pares
Ana Roberta Paulino, P. P. Batista, Lourivaldo Mota Lima, B. R. Clemesha, R. A. Buriti, Nelson Jorge Schuch,
... do Cariri (7.4°S; 36.5°W), Cachoeira Paulista (22.7°S; 45°W) and Santa Maria ( ... are variable for some month, like December at Cachoeira Paulista for northward wind, April and June at Santa ... at São João do Cariri, in December at Cachoeira Paulista, in March at Santa Maria and in August ...
Tópico(s): Planetary Science and Exploration
2015 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
Ana Roberta Paulino, P. P. Batista, Rachel E. S. Clemesha,
Using data from a meteor radar at Cachoeira Paulista (22.7°S; 45.0°W), the atmospheric lunar semidiurnal tide in the mesosphere and lower thermosphere was studied from January 2000 to ... phase profiles of the lunar semidiurnal tide over Cachoeira Paulista showed characteristics of vertically propagating waves. The mean ...
Tópico(s): Astro and Planetary Science
2011 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
E. R. de Paula, I. J. Kantor, J. H. A. Sobral, H. Takahashi, D.C. Santana, D. Gobbi, A. F. Medeiros, L. A. T. Limiro, H. Kil, P. M. Kintner, M. J. Taylor,
... zonal drift velocity of nighttime ionospheric irregularities from Cachoeira Paulista (22.41°S,45°W, dip latitude −17. ... along the magnetic field lines to 350km over Cachoeira Paulista. These all-sky imager derived zonal drifts are ...
Tópico(s): Solar and Space Plasma Dynamics
2002 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
P. R. Fagundes, Y. Sahai, J. A. Bittencourt, H. Takahashi,
... Fabry-Perot interferometer, have been carried out at Cachoeira Paulista (23°S, 45°W), Brazil, since 1988. In ... during this event there is thermospheric cooling over Cachoeira Paulista. This result is surprising, because we would normally ...
Tópico(s): Earthquake Detection and Analysis
1995 - Elsevier BV | Advances in Space Research
Produção Nacional
J. H. A. Sobral, M. A. Abdu, Y. Sahai,
... meridional scan OI 6300 Å airglow photometers over Cachoeira Paulista (22°42′S, 45°W, dip −26°), Brazil. ... of the airglow depletion patch zonal movements over Cachoeira Paulista are the following: (1) the night-time mean ...
Tópico(s): GNSS positioning and interference
1985 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
Y. Sahai, J. A. Bittencourt, N. R. Teixeira, H. Takahashi,
... 6300‐Å nightglow emissions were carried out at Cachoeira Paulista (22.7°S, 45.0°W), Brasil, during ... March 1979. An ionosonde is also operated at Cachoeira Paulista. A correlative study of the OI 7774‐Å ...
Tópico(s): Atmospheric Ozone and Climate
1981 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Produção Nacional
Revisado por pares
Fábio Vargas, C. G. M. Brum, Pedrina Terra, D. Gobbi,
... 36.5° W), and a mid-latitude station–Cachoeira Paulista (22.7° S, 45° W), both in the ... in Cariri, and for 56 events recorded over Cachoeira Paulista from 1998 to 2000. It was found that ...
Tópico(s): Solar and Space Plasma Dynamics
2020 - Multidisciplinary Digital Publishing Institute | Atmosphere
Produção Nacional
Y. Sahai, J. A. Bittencourt, H. Takahashi, N. R. Teixeira, Brian A. Tinsley, R. P. Rohrbaugh,
... nm emission lines have been carried out from Cachoeira Paulista (22.7°S, 45.0°W) and Fortaleza ( ... nm emission observations have been carried out at Cachoeira Paulista during the same period. At both stations ionosonde ...
Tópico(s): Earthquake Detection and Analysis
1990 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
Produção Nacional
P. R. Fagundes, Y. Sahai, H. Takahashi,
... of these emissions have been carried out at Cachoeira Paulista (22.7°S, 45.0°W), Brazil, since ... drop-outs. Twenty-five nights of measurements from Cachoeira Paulista have been analysed for this study, which indicate ...
Tópico(s): GNSS positioning and interference
1995 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
Produção Nacional
H. Takahashi, B. R. Clemesha, P. P. Batista,
... than those observed from the low latitude station, Cachoeira Paulista (22.7°S, 45.0°W). The OH ... around 10 K higher than that observed from Cachoeira Paulista. These results do not agree with model atmospheres ...
Tópico(s): Solar and Space Plasma Dynamics
1995 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
Produção Nacional
M. A. Abdu, J. H. A. Sobral, Osman Rosso Nelson, I. S. Batista,
... 38.6°W, dip 3.5°S) and Cachoeira Paulista (22°41′S, 45°W, dip 26°S) ... especially in the early post-sunset hours. Over Cachoeira Paulista the spread-F occurrence rate at 20 and ...
Tópico(s): Solar and Space Plasma Dynamics
1985 - Elsevier BV | Journal of Atmospheric and Terrestrial Physics
Produção Nacional
Revisado por pares
E. R. de Paula, J. R. Souza, M. A. Abdu, G. J. Bailey, I. S. Batista, J. A. Bittencourt, E. Bonelli,
... measured at the Brazilian low latitude station of Cachoeira Paulista (22.5°S, 45°W, dip latitude 14° ... F10.7 influence on IEC showed that, for Cachoeira Paulista (CP) at 05 LT (around the diurnal minimum), ...
Tópico(s): Solar and Space Plasma Dynamics
1996 - Elsevier BV | Advances in Space Research
Produção Nacional
Revisado por pares
A. A. Pimenta, J. A. Bittencourt, P. R. Fagundes, Y. Sahai, R. A. Buriti, H. Takahashi, M. J. Taylor,
... 7.4°S, 36.5°W) and from Cachoeira Paulista (22.7°S, 45.0°W), Brazil, between ... do Cariri (equatorial region) and 12 nights from Cachoeira Paulista (low latitude). An interesting characteristic observed is the ...
Tópico(s): Solar and Space Plasma Dynamics
2003 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
J. S. Travelho, Wilson F. N. Santos,
... Combusta˜o e Propulsa˜o, Caixa Postal 01, Cachoeira Paulista, SP, 12630-000 Brazil Search for other works ... Combusta˜o e Propulsa˜o, Caixa Postal 01, Cachoeira Paulista, SP, 12630-000 Brazil J. Heat Transfer. May ...
Tópico(s): Solar Thermal and Photovoltaic Systems
1998 - ASM International | Journal of Heat Transfer
Produção Nacional
Revisado por pares
M. T. A. H. Muella, Marcelo H. Duarte-Silva, Alison de Oliveira Moraes, E. R. de Paula, L. F. C. Rezende, Lucilla Alfonsi, Bruno J. Affonso,
... during ∼ 17 years (September 1997–November 2014) at Cachoeira Paulista (22.4° S; 45.0° W), Brazil. The ... the secular variation in the dip latitude of Cachoeira Paulista, since the maximum occurrence of scintillations during the ...
Tópico(s): Earthquake Detection and Analysis
2017 - Copernicus Publications | Annales Geophysicae
Produção Nacional
Revisado por pares
A. M. Santos, I. S. Batista, M. A. Abdu, J. H. A. Sobral, J. R. Souza, C. G. M. Brum,
... 44∘ W; inclination: −3.8∘) and > 90 % in Cachoeira Paulista (22.42∘ S, 45∘ W; inclination: −33.5∘). ... IL mean descent velocity over São Luís and Cachoeira Paulista shows a day-to-day variability that may ...
Tópico(s): Earthquake Detection and Analysis
2019 - Copernicus Publications | Annales Geophysicae
Produção Nacional
Revisado por pares
A. Guharay, P. P. Batista, R. A. Buriti, Nelson Jorge Schuch,
... do Cariri (7.4°S, 36.5°W), Cachoeira Paulista (22.7°S, 45°W) and Santa Maria ( ... good correlation with the outgoing longwave radiation at Cachoeira Paulista indicating plausible influence of lower atmospheric convective activity. ...
Tópico(s): Solar and Space Plasma Dynamics
2017 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
A. Guharay, P. P. Batista, B. R. Clemesha,
... lower thermosphere (MLT) over a subtropical Brazilian station, Cachoeira Paulista (22.7°S, 45°W), the temporal variability ...
Tópico(s): Oceanographic and Atmospheric Processes
2015 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
A. Guharay, P. P. Batista, B. R. Clemesha,
... interactions with the longer period planetary waves at Cachoeira Paulista (22.7°S, 45°W). The QTDW is ...
Tópico(s): Atmospheric Ozone and Climate
2015 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
Produção Nacional
Revisado por pares
C. M. N. Cândido, I. S. Batista, F. Becker‐Guedes, M. A. Abdu, J. H. A. Sobral, H. Takahashi,
... the southern crest of the equatorial ionization anomaly (Cachoeira Paulista 22.7°S, 45.0°W, mag. Lat.: ... the other hand, EPBs are rarely observed over Cachoeira Paulista (hereafter referred as CP) during June solstice because ...
Tópico(s): Solar and Space Plasma Dynamics
2011 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Produção Nacional
Revisado por pares
Ana Roberta Paulino, P. P. Batista, B. R. Clemesha, R. A. Buriti, Nelson Jorge Schuch,
... do Cariri (7.4°S, 36.5°W), Cachoeira Paulista (23°S, 45°W) and Santa Maria (29. ... the MLT region. Moreover, the mesospheric temperatures at Cachoeira Paulista and Santa Maria presented cooling and a semimonthly ...
Tópico(s): Astro and Planetary Science
2011 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics