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Upward lightning flashes

Grant number: 14/10299-6
Support Opportunities:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): November 01, 2014
Effective date (End): October 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Marcelo Magalhães Fares Saba
Grantee:Carina Schumann
Supervisor: Wolfgang Schulz
Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
Research place: Austrian Lightning Detection and Information System (ALDIS), Austria  
Associated to the scholarship:13/05784-0 - Upward lightning flash characterization from high-speed camera videos and electric field measurements, BP.DR


Upward lightning flash studies are antique (McEachron, 1939). Interest in this subject has grown recently, because of the rapid expansion of wind power generation. Also, with the increasing number of tall buildings and towers, there will be a corresponding increase in the number of upward lightning flashes from these structures. In Brazil, this study started in January 2012, when ELAT Group from the National Institute for Space Research-INPE registered the first upward flash at Jaragua Peak, in Sao Paulo city with a high-speed video camera.Reports from recent field observations are beginning to address the nature of upward lightning initiation, but still much needs to be learned. Examples are studies of upward lightning from towers in winter thunderstorms in Japan (Wang and Takagi, 2010; and Lu et al., 2009) and summer thunderstorms in Europe (Miki et al., 2005; Flache et al., 2008; and Diendorfer et al., 2009; Zhou et al., 2011) and in North America (Mazur and Ruhnke, 2011; Hussein et al., 2011; Warner, 2011, and Warner et al., 2011, 2012).The main goal of the PhD candidate (Scholarship FAPESP 2013/05784-0) is to understand the initiation of upward lightning flashes. Characteristics of this type of flashes can be understood using electric field sensors, high-speed cameras and direct current measurements. The chosen institute to make this research (Internship Abroad) is ALDIS, the institute that developed some of the sensors in use by the ELAT group at INPE and is performing direct current measurements in Austria. (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)
SABA, MARCELO M. F.; SCHUMANN, CARINA; WARNER, TOM A.; FERRO, MARCO ANTONIO S.; DE PAIVA, AMANDA ROMAO; HELSDON, JR., JOHN; ORVILLE, RICHARD E.. Upward lightning flashes characteristics from high-speed videos. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, v. 121, n. 14, p. 8493-8505, . (13/05784-0, 12/15375-7, 14/10299-6)

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