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Microphysical characteristics of isolated storms before and during the production of the first cloud-to-ground flash

Grant number: 13/04292-6
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): August 07, 2013
Effective date (End): April 06, 2014
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Meteorology
Principal researcher:Luiz Augusto Toledo Machado
Grantee:Enrique Vieira Mattos
Supervisor abroad: Earle R. Williams
Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
Research place: Massachusetts Institute of Technology (MIT), United States  
Associated to the scholarship:11/18217-0 - The impact of cloud microphysics on thunderstorms electrification, BP.DR


The BEPE project intends determine the impact of clouds ice and mix phase on storms initial electrification and on producing flashes lightning. This objective is part of Brazilian Scholarship Regular Project (FAPESP process number: 2011/18217-0) begin carried out and also is associated the Tematic Project termed CHUVA. Data from Xpol Polarimetric radar, Lightning Mapper Array (LMA) and the Brazilian lightning network will be used from CHUVA-GLM-Vale campaign from November 2011 to March 2012. The first step will be select case studies to evaluated the relationship between the first intra-cloud return strokes and vertical structure of horizontal reflectivity, differential reflectivity, specific differential phase and correlation factor. Will be determined the three dimensional distribution of LMA data to the create storms electrical structure in initial phase. The second step has the objective of evaluate the physical characteristics of the first cloud-to-ground flashes of storms. Will be analyzed parameters like: polarity, peak current and multiplicity (number of return strokes of flash) in the time flashes strike the ground. This project is planned to be realized in eight months at Massachusetts Institute of Technology (MIT) with the researcher Dr. Earle Williams. This time at MIT will allow understand and make a lot of discussing on how the cloud become electrified and evaluated which clouds microphysical proprieties has an important impact on producing the first cloud-to-ground flashes lightning. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MATTOS, ENRIQUE V.; MACHADO, LUIZ A. T.; WILLIAMS, EARLE R.; GOODMAN, STEVEN J.; BLAKESLEE, RICHARD J.; BAILEY, JEFFREY C. Electrification life cycle of incipient thunderstorms. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, v. 122, n. 8, p. 4670-4697, APR 27 2017. Web of Science Citations: 4.
WILLIAMS, EARLE R.; MATTOS, ENRIQUE V.; MACHADO, LUIZ A. T. Stroke multiplicity and horizontal scale of negative charge regions in thunderclouds. Geophysical Research Letters, v. 43, n. 10, p. 5460-5466, MAY 28 2016. Web of Science Citations: 1.

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