Ocorrência De Estiagem No Rio Grande Do Sul No Período De 1981 À 2011

Kulman, Denilson; Reis, Janete Terresinha; Souza, Angélica Cargnin de; Pires, Carlos Alberto da Fonseca; Sausen, Tánia María

doi:10.5902/2179460x13205

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For these reasons, the 1941 flood is a traumatic at almost unique event in the history of Rio Grande do Sul, even though the state has a history of disasters that includes droughts (Kulman et al, 2014;Cunha et al, 2019), landslides (Froude & Petley, 2018;Cardozo et al, 2021), extreme winds (Machado & Calliari, 2016;Lima et al, 2020), hail (Nedel et al, 2012;Martins et al, 2017) and frequent floods that can occur practically at any time of the year (Cassalho et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Hydrological-hydrodynamic simulation and analysis of the possible influence of the wind in the extraordinary flood of 1941 in Porto Alegre

Possa

Collischonn

Jardim

et al. 2022

RBRH

View full text Add to dashboard Cite

The great flood of 1941 remains the most impactful and traumatic flood event in the history of Porto Alegre. This event was caused by a combination of heavy rainfall in the basin in the days prior to the peak of the flood, and the wind that occurred during the flood. However, the influence of wind on the maximum flood level, although frequently mentioned, is not well known. This is largely because there are no systematic data for wind speed measuring and direction in 1941. Therefore, the present work aims to estimate the discharge and the maximum flood level in the city of Porto Alegre and in other relevant points of the basin. using hydrological-hydrodynamic modeling and, from there, analyze the possible role of the wind during the flood, through the simulation of hypothetical wind scenarios. The results showed that the discharges and levels were represented reasonably well with the MGB model at several locations in the basin. In relation to the 1941 event and the scenarios created, the contribution of the wind to the peak of the flood was of the order of a few to tens of centimeters, showing its potential role despite the limitations of the model.

show abstract

Section: Introductionmentioning

confidence: 99%

Hydrological-hydrodynamic simulation and analysis of the possible influence of the wind in the extraordinary flood of 1941 in Porto Alegre

Possa

Collischonn

Jardim

et al. 2022

RBRH

View full text Add to dashboard Cite

show abstract

Climate and Soil Conditions Across the South Brazilian Grasslands

Hasenack,

Hofmann,

Weber

et al. 2023

South Brazilian Grasslands

View full text Add to dashboard Cite

Analysis of average annual temperatures and rainfall in southern region of the state of Rio Grande do Sul, Brazil

Cardoso

Siqueira

Timm

et al. 2022

Rev. Bras. Ciênc. Ambient.

View full text Add to dashboard Cite

This work aimed to analyze the average temperature and rainfall in the Southern and Steppe regions of the State of Rio Grande do Sul, Brazil, obtained by three global climate models regionalized by the Eta model (CANESM2, HADGEM2-ES and MIROC5) for the historical period, and two future climate scenarios (RCP 4.5 and RCP 8.5), subdivided into three periods: F1 (2006-2040), F2 (2041-2070), and F3 (2071-2099). The analysis was conducted by applying the trend tests Mann Kendall’s, Sen’s Slope and Pettitt’s to the dataset. The study noted an increase in temperature, and that the highest temperatures will occur at the end of the century. For the three climate models, temperatures will be milder in the RCP 4.5 scenario, mostly, when compared to the RCP 8.5. For those scenarios, a significant increase up to 0.95°C/year was observed in the temperature of all series, with the years of change in the mean values occurring between 2048 and 2060. The projections also suggest that there may be an increase in the average accumulated rainfall in the future periods analyzed, with exception of the result found with CANESM2 model at the RCP 8.5 scenario, which showed a significant decrease of annual rainfall in all series, ranging approximately from -3,1 to -6,6 mm/year. Those significant changes in mean of the rainfall series are expected for the late 2070's. With exception of this result, most cities and models indicate an increase in rainfall regimes, with clear variations between models and scenarios.

show abstract

Ocorrência De Estiagem No Rio Grande Do Sul No Período De 1981 À 2011

Cited by 3 publications

References 0 publications

Hydrological-hydrodynamic simulation and analysis of the possible influence of the wind in the extraordinary flood of 1941 in Porto Alegre

Hydrological-hydrodynamic simulation and analysis of the possible influence of the wind in the extraordinary flood of 1941 in Porto Alegre

Climate and Soil Conditions Across the South Brazilian Grasslands

Analysis of average annual temperatures and rainfall in southern region of the state of Rio Grande do Sul, Brazil

Contact Info

Product

Resources

About