LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511
This paper presents a methodology that employs the electrostatic field variations caused by thundercloud formation or displacement to generate lightning warnings over a region of interest in Southeastern Brazil. These warnings can be used to prevent accidents during hazardous operations, such as the...
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| Format: | Article |
| Language: | English |
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Instituto de Aeronáutica e Espaço (IAE)
2012-01-01
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| Series: | Journal of Aerospace Technology and Management |
| Subjects: | |
| Online Access: | https://www.jatm.com.br/jatm/article/view/120 |
| _version_ | 1818471189625962496 |
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| author | Marco Antonio da Silva Ferro Jorge Yamasaki Douglas Roberto M. Pimentel Kleber Pinheiro Naccarato Marcelo Magalhães Fares Saba |
| author_facet | Marco Antonio da Silva Ferro Jorge Yamasaki Douglas Roberto M. Pimentel Kleber Pinheiro Naccarato Marcelo Magalhães Fares Saba |
| author_sort | Marco Antonio da Silva Ferro |
| collection | DOAJ |
| description | This paper presents a methodology that employs the electrostatic field variations caused by thundercloud formation or displacement to generate lightning warnings over a region of interest in Southeastern Brazil. These warnings can be used to prevent accidents during hazardous operations, such as the manufacturing, loading, and test of motor-rockets. In these cases, certain equipment may be moved into covered facilities and personnel are required to take shelter. It is also possible to avoid the threat of natural and triggered lightning to launches. The atmospheric electric field database, including the summer seasons of 2007/2008 and 2008/2009 (from November to February), and, for the same period and region, the cloud-to-ground lightning data provided by the Brazilian lightning detection network – BrasilDAT – were used in order to perform a comparative analysis between the lightning warnings and the cloud-to- ground lightning strikes that effectively occurred inside the area of concern. The analysis was done for three areas surrounding the sensor installation defined as circles with 5, 10 and 15 km of radius to determine the most effective detection range. For each area it was done using several critical electric field thresholds: +/- 0.5; +/- 0.8; +/- 0.9; +/- 1.0; +/- 1.2; and +/- 1.5 kV/m. As a result of the reduction of atmospheric electric field data provided by the sensor installed in area of concern and lightning provided by BrasilDAT, it was possible, for each of the areas of alert proposals, to obtain the following parameters: the number of effective alarms; the number of false alarms; and the number of failure to warning. From the analysis of these parameters, it was possible to conclude that, apparently, the most interesting critical electric field threshold to be used is the level of 0.9 kV/m in association with a distance range of 10 km around the point where the sensor is installed. |
| first_indexed | 2024-04-14T03:47:45Z |
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| id | doaj.art-421999fd61fe46bcb0a29ef0704d199c |
| institution | Directory Open Access Journal |
| issn | 2175-9146 |
| language | English |
| last_indexed | 2024-04-14T03:47:45Z |
| publishDate | 2012-01-01 |
| publisher | Instituto de Aeronáutica e Espaço (IAE) |
| record_format | Article |
| series | Journal of Aerospace Technology and Management |
| spelling | doaj.art-421999fd61fe46bcb0a29ef0704d199c2022-12-22T02:14:10ZengInstituto de Aeronáutica e Espaço (IAE)Journal of Aerospace Technology and Management2175-91462012-01-0133LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511Marco Antonio da Silva Ferro0Jorge Yamasaki1Douglas Roberto M. Pimentel2Kleber Pinheiro Naccarato3Marcelo Magalhães Fares Saba4IAEIAEIAEINPEINPEThis paper presents a methodology that employs the electrostatic field variations caused by thundercloud formation or displacement to generate lightning warnings over a region of interest in Southeastern Brazil. These warnings can be used to prevent accidents during hazardous operations, such as the manufacturing, loading, and test of motor-rockets. In these cases, certain equipment may be moved into covered facilities and personnel are required to take shelter. It is also possible to avoid the threat of natural and triggered lightning to launches. The atmospheric electric field database, including the summer seasons of 2007/2008 and 2008/2009 (from November to February), and, for the same period and region, the cloud-to-ground lightning data provided by the Brazilian lightning detection network – BrasilDAT – were used in order to perform a comparative analysis between the lightning warnings and the cloud-to- ground lightning strikes that effectively occurred inside the area of concern. The analysis was done for three areas surrounding the sensor installation defined as circles with 5, 10 and 15 km of radius to determine the most effective detection range. For each area it was done using several critical electric field thresholds: +/- 0.5; +/- 0.8; +/- 0.9; +/- 1.0; +/- 1.2; and +/- 1.5 kV/m. As a result of the reduction of atmospheric electric field data provided by the sensor installed in area of concern and lightning provided by BrasilDAT, it was possible, for each of the areas of alert proposals, to obtain the following parameters: the number of effective alarms; the number of false alarms; and the number of failure to warning. From the analysis of these parameters, it was possible to conclude that, apparently, the most interesting critical electric field threshold to be used is the level of 0.9 kV/m in association with a distance range of 10 km around the point where the sensor is installed.https://www.jatm.com.br/jatm/article/view/120Atmospheric electric fieldElectric field-millLightning. |
| spellingShingle | Marco Antonio da Silva Ferro Jorge Yamasaki Douglas Roberto M. Pimentel Kleber Pinheiro Naccarato Marcelo Magalhães Fares Saba LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 Journal of Aerospace Technology and Management Atmospheric electric field Electric field-mill Lightning. |
| title | LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 |
| title_full | LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 |
| title_fullStr | LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 |
| title_full_unstemmed | LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 |
| title_short | LIGHTNING RISK WARNINGS BASED ON ATMOSPHERIC ELECTRIC FIELD MEASUREMENTS IN BRAZIL. DOI: 10.5028/jatm.2011.03032511 |
| title_sort | lightning risk warnings based on atmospheric electric field measurements in brazil doi 10 5028 jatm 2011 03032511 |
| topic | Atmospheric electric field Electric field-mill Lightning. |
| url | https://www.jatm.com.br/jatm/article/view/120 |
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