| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/44UH4EH | |||
| Repository | sid.inpe.br/mtc-m21d/2021/06.28.13.55 (restricted access) | |||
| Last Update | 2021:06.28.13.55.09 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2021/06.28.13.55.09 | |||
| Metadata Last Update | 2022:04.03.22.27.24 (UTC) administrator | |||
| DOI | 10.5194/nhess-21-1921-2021 | |||
| ISSN | 1684-9981 | |||
| Citation Key | PoelmanSPCMHSH:2021:AlVa | |||
| Title | Global ground strike point characteristics in negative downward lightning flashes – Part 2: Algorithm validation  | |||
| Year | 2021 | |||
| Month | Jun | |||
| Access Date | 2024, May 19 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 1078 KiB | |||
| 2. Context | ||||
| Author | 1 Poelman, Dieter R. 2 Schulz, Wolfgang 3 Pedeboy, Stephanie 4 Campos, Leandro. Z. S. 5 Matsui, Michihiro 6 Hill, Dustin 7 Saba, Marcelo Magalhães Fares 8 Hunt, Hugh | |||
| Resume Identifier | 1 2 3 4 5 6 7 8JMKD3MGP5W/3C9JHP6 | |||
| Group | 1 2 3 4 5 6 7 DISSM-CGCT-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Royal Meteorological Institute of Belgium 2 Austrian Lightning Detection and Information System (ALDIS) 3 Météorage 4 Campos Scientific Computing 5 Franklin Japan Corporation 6 Scientific Lightning Solutions LLC (SLS) 7 Instituto Nacional de Pesquisas Espaciais (INPE) 8 University of Witwatersrand | |||
| Author e-Mail Address | 1 dieter.poelman@meteo.be 2 w.schulz@ove.at 3 4 5 6 7 marcelosaba@gmail.com | |||
| Journal | Natural Hazards and Earth System Sciences | |||
| Volume | 21 | |||
| Pages | 1921-1933 | |||
| Secondary Mark | A2_GEOGRAFIA A2_GEOCIÊNCIAS B2_ENGENHARIAS_III | |||
| History (UTC) | 2021-07-02 17:59:15 :: simone -> administrator :: 2021 2022-04-03 22:27:24 :: administrator -> simone :: 2021 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | At present the lightning flash density is a key input parameter for assessing the risk of occurrence of a lightning strike in a particular region of interest. Since it is known that flashes tend to have more than one ground termination point on average, the use of ground strike point densities as opposed to flash densities is more appropriate. Lightning location systems (LLSs) do not directly provide ground strike point densities. However, ingesting their observations into an algorithm that groups strokes into respective ground strike points results in the sought-after density value. The aim of this study is to assess the ability of three distinct ground strike point algorithms to correctly determine the observed ground-truth strike points. The output of the algorithms is tested against a large set of ground-truth observations taken from different regions around the world, including Austria, Brazil, France, Spain, South Africa and the United States of America. These observations are linked to the observations made by a local LLS in order to retrieve the necessary parameters of each lightning discharge, which serve as input for the algorithms. Median values of the separation distance between the first stroke in the flash and subsequent ground strike points are found to vary between 1.3 and 2.75ĝ¯km. It follows that all three of the algorithms perform well, with success rates of up to about 90ĝ¯% to retrieve the correct type of the strokes in the flash, i.e., whether the stroke creates a new termination point or follows a pre-existing channel. The most important factor that influences the algorithms' performance is the accuracy by which the strokes are located by the LLS. Additionally, it is shown that the strokes' peak current plays an important role, whereby strokes with a larger absolute peak current have a higher probability of being correctly classified compared to the weaker strokes. | |||
| Area | MET | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Global ground strike... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | poelman_global2.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KUATE | |||
| Citing Item List | sid.inpe.br/bibdigital/2022/04.03.22.23 1 sid.inpe.br/mtc-m21/2012/07.13.14.54.40 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||