| Autor: |
Nicole Costa Resende Ferreira, Priscila Silva Tavares, Gustavo Sueiro Medeiros, Leonardo Nascimento Ferreira, Pablo Borges, Sin Chan Chou, Maria Laura Rodrigues |
| Jazyk: |
English<br />Portuguese |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Derbyana, Vol 44 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2764-1465 |
| DOI: |
10.14295/derb.v44.808 |
| Popis: |
Transmission line towers are highly exposed to weather hazards. In southern Brazil, several damages to transmission lines have been reported due to severe weather events. Climate change projections indicate that the frequency and magnitude of extreme events may increase, making planning and adaptation of the transmission system exposure even more critical. In this work, we propose a severe weather index (SWI) as a proxy for detecting severe storms that can potentially result in extreme weather events. The SWI combines thresholds of instability indices based on observed severe events around the transmission tower-line systems. These indices were calculated using the downscaling by the Eta model at 20 km resolution of three global climate model projections and at 5 km of one global climate model for the historical period and the near future. The results show that the SWI captures the severe storms observed in the region. All downscaling projections agree with the increase of extreme weather events in the near future and the expansion of vulnerable areas. The constructed index can be employed to assess the risks and to plan the power transmission system better. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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