Osmar Pinto Junior

• Abstract

  The general goal of the project is investigate trends in the lightning occurrence and characteristics in Brazil that can be related to the climatic changes due to global warming. The investigation will be focused not only in mean values but also in the frequency of extreme values of the lightning characteristics. The analysis will include large urban areas where large changes in the envir…

  Detection of trends in the lightning activity in Brazil related to climatic changes, AP.TEM
• Lightning observations in the south of brazil using a safir system., AR.BR

• Abstract

  The general goal of the project is to investigate the lightning activity and characteristics in Brazil. These studies are of main concern due to the high flash densities in the country. The last estimate, based on the comparison between satellite and ground network data, suggests that on average approximately 50 to 70 million cloud-to-ground lightning flashes occur every year. The focus w…

  Brazilian Program to Monitor Lightning, AP.TEM

(Only some records are available in English at this moment)

• Abstract

  The study of lightning is a topic that has been gaining significant attention in the scientific community , because from the monitoring periods of increased incidence of discharges can issue warnings characteristics such as intensity , duration and severity of storms , allowing preventive measures to be taken in short term, to minimize impacts of severe weather phenomena . Thus , the aim …

  Extreme lightning events in São Paulo: Cases observed and future scenarios, BP.DR

• Abstract

  The present document consists of a doctoral thesis proposal that aims at analyzing two main questions: how does the current cutoff takes place in lightning (particularly in the context of the bidirectional leader model); and what is the nature of lightning flashes that create multiple ground terminations. The former analysis will be based primarily in data provided by a network of slow el…

  On the mechanisms that lead to multiple ground contacts in lightning, BP.DR

• Abstract

  This project proposes, for the first time, a development and applications of a high-speed cameras network for the observations and studying of lightning flashes. The high-speed cameras are being purchased by the Thematic Project (FAPESP 08/56711-4) started in December 2009 and have the ability to record high-resolution video (up to 1632 x 1200 pixels at 1000 frames per second). A robust s…

  High-speed camera network for monitoring and study lightning (RAMMER Project), BP.PD

(Only some records are available in English at this moment)

• Abstract

  This research project aims at the analyses of two main questions: (i) How does the process of channel current cutoff occur in lightning (particularly in the context of the bidirectional leader model)? (ii) What is the nature of the lightning flashes that create multiple ground contact points? The first analysis will be based primarily on data from a network of slow electric field antennae…

  On the mechanisms that lead to current cutoff and multiple ground contacts in lightning, BE.EP.DR