Abstract. This research was aimed at addressing aspects related to variation in the amount of precipitation during the period from 1986 to 2011, in the Paraná River Hydrographical Basin, Brazil, for 32 meteorological stations using 11 climate indices created by the ETCCDI (Expert Team, ET, on Climate Change Detection and Indices, ETCCDI). The daily rainfall data were organized in spreadsheets, which were subjected to an intense quality control and an accurate historical research. For each pluviometric index, we have estimated the trends and the statistical significant of the slopes have been calculated. The results confirm that there is an increase in the number of wet days in most of the basin, since an increase in total precipitation in almost all analyzed stations was registered, and the precipitation considered extreme were the main contributors to such additions. Successively, we have studied accurately the variations of rain of two municipalities (Curitiba, PR and Goiânia, GOBrazil) located in different climatic regions of the study area. The aim was to evaluate the impact that rainfall may cause in these two large urban centers. In these two municipalities, it was found that the variation of rainfall amount can cause inconvenience to the population (floods and inundations) due to the increasing of extreme rainfall, such results may be of concern with the accelerated increase of these urban areas and their populations, suggesting, at least, the need of implementation of more effective urban planning for the future.
Maringá é uma cidade de médio porte da Mesorregião Norte Central Paranaense, recortada pelo Trópico de Capricórnio e, portanto, influenciada por sistemas atmosféricos tropicais e subtropicais que podem promover significativa variabilidade atmosférica e, eventualmente, intensos eventos de chuvas. Assim, os regimes hídricos dos rios da região são dependentes e muitas vezes impactados pelo dinamismo da atmosfera tanto regional quanto global. Analisou-se o histórico pluviométrico desta região e a influência do El Niño de 2015/2016 em um episódio de chuvas extremas registrado no período e que inundou a área de coleta de água e impactou significativamente o abastecimento da cidade, gerando caos para a população. Foram constatados volumes diários extremos de chuvas durante tal episódio e tendências históricas de aumento destes volumes para praticamente toda a região hidrográfica à montante da área de coleta. Neste sentido o monitoramento realizado pela empresa responsável pelo serviço também pode ter sido insuficiente ou deficitário.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.