Cloud-to-ground lightning distribution in Brazil

Details Cloud-to-ground lightning distribution in Brazil Cloud-to-ground lightning distribution in Brazil

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jastp..65..733p&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 65, Issue 6, p. 733-737.

Physics

13

Scientific paper

The cloud-to-ground lightning distribution in Brazil is reviewed based on data from thunderstorm days, flash counters, LF/VLF lightning detection networks, precipitation, and optical satellite sensors. Brazil is the largest tropical country in the world and, in consequence, one of the countries with highest lightning activity. Although the information obtained in the last decade covers only part of the country, it provides a unique opportunity to study the lightning geographical distribution in Brazil. The analysis of the data suggests that 50-70 millions of cloud-to-ground lightning flashes occur every year, most of them concentrated in the north, center, and southeast regions. The analysis also suggests that flash densities larger than 10flasheskm-2yr-1 are common in these regions. However, the information about the distribution of peak current, multiplicity and percentage of positive cloud-to-ground flashes is still very limited and controversial.

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