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Avaliação de modelos globais e regionais climáticos.
É apresentada a capacidade dos modelos numéricos em reproduzir o clima presente sobre a América do Sul. Características e desenvolvimentos do modelo global atmosférico do CPTEC, do modelo global acoplado oceano-atmosfera do CPTEC e modelos regionais climáticos são descritos. No modo climátic...- por Portal Padrão
- publicado
- 22/08/2011
- 4:28 PM
A new approach to estimate the annual number of global lightning fatalities.
Lightning is one of the major causes of weather related mortality in several countries around the world. However, in many countries, no reliable statistics are available about the number of annual lightning fatalities, in part due to the inexistence of specific institutions responsible for such stat...- por Portal Padrão
- publicado
- 22/08/2011
- 4:25 PM
Lightning casualty demographics in Brazil and its implications to safety rules.
A 10-year study about lightning fatalities in Brazil is presented. It is the more complete study already done in South America. The study indicates the death rates in the country sorted by season, state, city, type of region, age, season, gender and circumstances. Ten years of data were collected fr...- por Portal Padrão
- publicado
- 22/08/2011
- 4:24 PM
Padrões globais da dinâmica do fogo na vegetação.
Neste projeto foram realizadas atividades que levaram ao acesso e uso de dados que auxiliam no desenvolvimento e aprimoramento de modelos globais que representam a ocorrência e os efeitos do fogo na vegetação. O principal conjunto de dados encontrado está relacionado à atividade de fogo na supe...- por Portal Padrão
- publicado
- 22/08/2011
- 4:22 PM
Análise espaço-temporal dos plantios de Eucalyptus spp no Estado de São Paulo.
Brazil has nearly 5 million hectares of forest planted with species of the genus Eucalyptus and Pinnus and nearly 70% of these forests are for the manufacture of cellulose pulp. Eucalyptus planted forests are being implemented in different regions of the country, developing at sites with different t...- por Portal Padrão
- publicado
- 22/08/2011
- 4:21 PM
Observations of natural cloud-to-ground lightning leaders from simultaneous high-speed video recordings and electric field measurements.
The aim of this investigation is to analyze the phenomenology of positive and negative (stepped-, dart- and recoil) leaders observed in natural lightning from simultaneous high-speed video recordings and electric field measurements. For that intent we have used two different high-speed cameras (obta...- por Portal Padrão
- publicado
- 22/08/2011
- 4:19 PM
High-speed video observations of β2-type leaders in negative lightning: a manifestation of recoil leaders initiated inside the cloud?
Schonland et al. (1938), in their seminal streak camera studies of lightning, have identified a peculiar type of negative stepped leader that they termed β, a rather rare variant of the type β leader and in it the second and slower stage of the leader is associated with the appearance of one or mo...- por Portal Padrão
- publicado
- 22/08/2011
- 3:24 PM
A 11-year study about the spatial and temporal variations of the lightning flash density in the southeastern Brazil.
Lightning data obtained by the Brazilian Lightning Detection Network (BrasilDat) in the southeastern region of Brazil (latitudes from 22S to 24S and longitudes from 43W to 47.4W) from 1999 to 2009 were studied in terms of spatial and temporal variations of the flash counts. The spatial variation sho...- por Portal Padrão
- publicado
- 22/08/2011
- 3:21 PM
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