Characterization of intracloud discharges preceding positive cloud-to-ground lightning strokes in Brazil.
Positive flashes correspond to approximately only 10% of the total number of flashes produced by a thunderstorm. However, positive strokes are in average much more intense than the negative strokes. Intense peak current and long continuing current are usually present in the same stroke. Therefore, p...
por Portal Padrão
publicado
23/08/2011
3:28 PM
Variabilidade sazonal do clima e da vegetação no bioma Caatinga.
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por Portal Padrão
publicado
23/08/2011
3:27 PM
Identificação e caracterização dos principais tipos funcionais de plantas (tfp) no bioma cerrado para uso em modelos integrados de biosfera terrestre.
O bioma Cerrado corresponde a 23% do território nacional, e é caracterizado por apresentar formação florística heterogênea, conhecida como mosaico de fitofisionomias. Modelar a interação entre este bioma e a atmosfera tem se tornado um grande desafio para a ciência devido à dificuldade de ...
por Portal Padrão
publicado
23/08/2011
3:25 PM
Leader characteristics in positive cloud-to-ground lightning flashes.
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por Portal Padrão
publicado
23/08/2011
3:23 PM
Electric field waveforms of positive return strokes.
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por Portal Padrão
publicado
23/08/2011
3:22 PM
On relationships between the multiplicity and duration of negative cloud to ground lightning flashes and the horizontal extent of the inferred negative charge region.
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por Portal Padrão
publicado
23/08/2011
3:20 PM
On how estimates of the lightning peak current depend on the altitude of the 35 dBZ radar reflectivity in São José dos Campos, Brazil and Tucson, Arizona, USA.
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por Portal Padrão
publicado
23/08/2011
3:19 PM
Analyses of the key factors that may lead to a misclassification of negative flashes reported by lightning locating systems (LLS).
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por Portal Padrão
publicado
23/08/2011
3:17 PM
RAMMER Project: first observations of the high speed camera network to monitor and study lightning.
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por Portal Padrão
publicado
23/08/2011
3:15 PM
Cloud-to-ground lightning characteristics of severe storms in Southeastern Brazil.
The objective of this work is to study the atmospheric conditions during cloud-to-ground (CG) lightning activity and the associated meteorological systems. A more comprehensive study of the CG lightning characteristics may lead to a better understanding of the thunderstorm severity. For these develo...
por Portal Padrão
publicado
23/08/2011
3:14 PM
About the variations of thunderstorm days over the city of Belém, located near the equator, inthe last 50 years.
Belém is the capital of the state of Pará, in the North region of Brazil. It is located at 1°27S 48°30 W, near to the equator. The thunderstorm activity in this region receives direct influence of global climatological parameters like ENSO (El Niño Southern Oscillation) and Tropical Atlantic Di...
por Portal Padrão
publicado
23/08/2011
3:12 PM
Positive lightning flashes characteristics: a review of high-speed video observations.
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