Search Results - "Andrioli, V F"

The Influence of Disturbance Dynamo Electric Field in the Formation of Strong Sporadic E Layers Over Boa Vista, a Low‐Latitude Station in the American Sector by Resende, L. C. A., Shi, J. K., Denardini, C. M., Batista, I. S., Nogueira, P. A. B., Arras, C., Andrioli, V. F., Moro, J., Da Silva, L. A., Carrasco, A. J., Barbosa, P. F., Wang, C., Liu, Z.

“…This study analyzes strong sporadic E layer (Es) formation in Boa Vista (BV, 2.8°N, 60.7°W, dip: 18°), a low‐latitude region in the Brazilian sector, which…”
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Solar Cycle and Long‐Term Trends in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars by Dawkins, E. C. M., Stober, G., Janches, D., Carrillo‐Sánchez, J. D., Lieberman, R. S., Jacobi, C., Moffat‐Griffin, T., Mitchell, N. J., Cobbett, N., Batista, P. P., Andrioli, V. F., Buriti, R. A., Murphy, D. J., Kero, J., Gulbrandsen, N., Tsutsumi, M., Kozlovsky, A., Kim, J. H., Lee, C., Lester, M.

“…The mesosphere/lower thermosphere (MLT, 80–100 km) region is an important boundary between Earth's atmosphere below and space above and may act as a sensitive…”
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Nocturnal and Seasonal Variation of Na and K Layers Simultaneously Observed in the MLT Region at 23°S by Andrioli, V. F., Xu, J., Batista, P. P., Pimenta, A. A., Resende, L. C. A., Savio, S., Fagundes, P. R., Yang, G., Jiao, J., Cheng, X., Wang, C., Liu, Z.

“…Abstract The present work shows for the first time the study of morphology of the mesopause sodium (Na) and potassium (K) layers simultaneously observed by a…”
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New Findings of the Sporadic E (Es) Layer Development Around the Magnetic Equator During a High‐Speed Solar (HSS) Wind Stream Event by Resende, L. C. A., Zhu, Y., Denardini, C. M., Batista, I. S., Shi, J., Moro, J., Chen, S. S., Conceição‐Santos, F., Da Silva, L. A., Andrioli, V. F., Muella, M. T. A. H., Fagundes, P. R., Carrasco, A. J., Pillat, V. G., Wang, C., Liu, Z.

“…The equatorial (Esq) and blanketing (Esb) sporadic (Es) layers occur due to the Equatorial Electrojet Current (EEJ) plasma instabilities and tidal wind…”
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Equatorial E Region Electric Fields and Sporadic E Layer Responses to the Recovery Phase of the November 2004 Geomagnetic Storm by Moro, J., Resende, L. C. A., Denardini, C. M., Xu, J., Batista, I. S., Andrioli, V. F., Carrasco, A. J., Batista, P. P., Schuch, N. J.

“…Equatorial E region electric fields (EEFs) inferred from coherent radar data, sporadic‐E (Es) layers observed from a digital ionosonde data, and modeling…”
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Multi-year observations of gravity wave momentum fluxes at low and middle latitudes inferred by all-sky meteor radar by Andrioli, V. F., Batista, P. P., Clemesha, B. R., Schuch, N. J., Buriti, R. A.

“…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…”
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Improved analysis of all-sky meteor radar measurements of gravity wave variances and momentum fluxes by Andrioli, V. F., Fritts, D. C., Batista, P. P., Clemesha, B. R.

“…The advantages of using a composite day analysis for all-sky interferometric meteor radars when measuring mean winds and tides are widely known. On the other…”
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Observation of a mesospheric front in a thermal-doppler duct over King George Island, Antarctica by Bageston, J V, Wrasse, C M, Batista, P P, Hibbins, R E, Fritts, D C, Gobbi, D, Andrioli, V F

“…A mesospheric front was observed with an all-sky airglow imager on the night of 9–10 July 2007 at Ferraz Station (62° S, 58° W), located on King George island…”
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Diurnal variation in gravity wave activity at low and middle latitudes by Andrioli, V. F., Fritts, D. C., Batista, P. P., Clemesha, B. R., Janches, D.

“…We employ a modified composite day extension of the Hocking (2005) analysis method to study gravity wave (GW) activity in the mesosphere and lower thermosphere…”
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Case study of a mesospheric wall event over Ferraz station, Antarctica (62° S) by BAGESTON, J. V, WRASSE, C. M, HIBBINS, R. E, BATISTA, P. P, GOBBI, D, TAKAHASHI, H, FRITTS, D. C, ANDRIOLI, V. F, FECHINE, J, DENARDINI, C. M

“…On 16–17 July 2007 during an observational campaign at Comandante Ferraz Antarctic Station (62° S, 58° W), a mesospheric wall was observed with an airglow…”
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Atmospheric tides and mean winds in the meteor region over Santa Maria (29.7°S; 53.8°W) by Andrioli, V.F., Clemesha, B.R., Batista, P.P., Schuch, N.J.

“…We compare meteor radar measurements of the MLT region winds at Santa Maria, Brazil (29.7°S, 53.8°W) with the Horizontal Neutral Wind Model (HWM-93) and the…”
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New Findings Relating Tidal Variability and Solar Activity in the Low Latitude MLT Region by Andrioli, V. F., Xu, J., Batista, P. P., Resende, L. C. A., Da Silva, L. A., Marchezi, J. P., Li, H., Wang, C., Liu, Z., Guharay, A.

“…Mesospheric winds have been measured by meteor radar at Cachoeira Paulista (22.7°S; 45°W) since April 1999. The tidal components were analyzed over about…”
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Analysis of Blanketing Sporadic‐E Layer and Associated Tidal Periodicities Over a Brazilian Station Undergoing a Transition From Low Latitude to Midlatitude by Moro, J., Xu, J., Bageston, J. V., Denardini, C. M., Andrioli, V. F., Resende, L. C. A., Da Silva, L. A., Li, H., Liu, Z., Wang, C., Schuch, N. J.

“…Analyses on a complete year of Digisonde data are conducted to investigate the sporadic‐E (Es) layers over Santa Maria (29.7°S, 53.8°W, dip lat.: −37°),…”
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Study of solar cycle dependence of the quasi-two-day wave in the MLT from an extratropical station by Guharay, A, Batista, P P, Andrioli, V F

“…The relationship between the quasi-two-day wave (QTDW) and solar variability during summer in the MLT is studied using long-term meteor wind observations from…”
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The Impact of the Disturbed Electric Field in the Sporadic E (Es) Layer Development Over Brazilian Region by Resende, L. C. A., Shi, J., Denardini, C. M., Batista, I. S., Picanço, G. A. S., Moro, J., Chagas, R. A. J., Barros, D., Chen, S. S., Nogueira, P. A. B., Andrioli, V. F., Silva, R. P., Carrasco, A. J., de Araujo, R. C., Wang, C., Liu, Z.

“…During disturbed periods, E region electric fields can cause anomalous Es layer behavior, which is observed in the digital ionosonde data. To investigate the…”
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Simultaneous Observation of Sporadic Potassium and Sodium Layers Over São José dos Campos, Brazil (23.1°S, 45.9°W) by Andrioli, V. F., Xu, J., Batista, P. P., Pimenta, A. A., Martins, M. P. P., Savio, S., Targon, C. G., Yang, G., Jiao, J., Wang, C., Liu, Z.

“…Sporadic potassium (Ks) and sodium (Nas) layers were investigated using more than 1,500 h of simultaneous Na/K LIDAR data at São José dos Campos, Brazil…”
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Strong temperature gradients and vertical wind shear on MLT region associated to instability source at 23°S by Andrioli, V. F., Batista, P. P., Xu, Jiyao, Yang, Guotao, Chi, Wang, Zhengkuan, Liu

“…Na lidar temperature measurements were taken successfully from 2007 to 2009 in the mesopause region over São José dos Campos (23.1°S, 45.9°W). Strong gradients…”
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Vertical winds and momentum fluxes due to equatorial planetary scale waves using all-sky meteor radar over Brazilian region by Egito, F, Andrioli, V F, Batista, P P

“…In the equatorial region planetary scale waves play an important role transporting significant amount of energy and momentum through atmosphere. Quantifying…”
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Seasonal and Local Time Variation in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars by Dawkins, E. C. M., Janches, D., Stober, G., Carrillo‐Sánchez, J. D., Lieberman, R. S., Jacobi, C., Moffat‐Griffin, T., Mitchell, N. J., Cobbett, N., Batista, P. P., Andrioli, V. F., Buriti, R. A., Murphy, D. J., Kero, J., Gulbrandsen, N., Tsutsumi, M., Kozlovsky, A., Lester, M., Kim, J.‐H., Lee, C., Liu, A., Fuller, B., O’Connor, D., Palo, S. E., Taylor, M. J., Marino, J., Rainville, N.

“…Meteoroids of sub‐milligram sizes burn up high in the Earth's atmosphere and cause streaks of plasma trails detectable by meteor radars. The altitude at which…”
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Why can the auroral-type sporadic E layer be detected over the South America Magnetic Anomaly (SAMA) region? An investigation of a case study under the influence of the high-speed solar wind stream by Da Silva, L. A., Shi, J., Vieira, L. E., Agapitov, O. V., Resende, L. C. A., Alves, L. R., Sibeck, D., Deggeroni, V., Marchezi, J. P., Chen, S., Moro, J., Arras, C., Wang, C., Andrioli, V. F., Li, H., Liu, Z.

“…The low-electron flux variability (increase/decrease) in the Earth’s radiation belts could cause low-energy Electron Precipitation (EP) to the atmosphere over…”
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