Caracterização Espaço-Temporal das Secas na Bacia do Rio Paraíba do Sul

Santana, Gildo Rafael de Almeida; Santos, Eliane Barbosa; Silva, Maria Gertrudes Alvarez Justi da

doi:10.11137/2020_4_364_375

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…The difference in annual accumulated values of precipitation can be associated on a broader scale by the valley-mountain circulation, where precipitation occurs due to orographic forcing and presents an intense gradient towards regions with higher altitudes. The spatial precipitation patterns are in line with the results of [19,47], through different datasets. The box plot shows the annual accumulated precipitation values in the PSRB from 1939 to 2020 in Figure 2b.…”

Section: Precipitation Data Analysissupporting

confidence: 82%

“…presents an intense gradient towards regions with higher altitudes. The spatial precipitation patterns are in line with the results of [19,47], through different datasets.…”

Section: Precipitation Data Analysissupporting

confidence: 82%

“…No clear trend, particularly during the wet season, was found. This was also confirmed by other studies that analyze rainfall trends in the PSRB such as [19], which used data from 92 rainfall stations covering the period from 1970 to 2018, and [2], which used data from 86 rainfall stations spanning from 1988 to 2018. However, we can highlight the positive trends in monthly precipitation rates in the mountainous region of Rio de Janeiro during the dry and wet seasons, particularly in the Serra dos Órgãos region, close to the municipalities of Três Rios, Teresópolis, and Petropólis.…”

Section: Precipitation Data Analysissupporting

confidence: 79%

“…Ref. [19] also used the MK to detect significant trends in precipitation data on 92 sites in the PSRB from 1970 to 2018 and concluded that the rainfall regime in the basin has been changing on a local scale, with regions that showed significant negative trends, while others showed a significant positive trend of precipitation. Ref.…”

Section: Introductionmentioning

confidence: 99%

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Hydrological and Precipitation Extremes and Trends over the Paraiba do Sul River Basin, Brazil

Oliveira

Carvalho

Silva

et al. 2023

Climate

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The Paraiba do Sul River Basin (PSRB) is a vital source of water resources in Brazil, providing water for human consumption, industry, agriculture, and hydroelectric energy generation. As part of one of the most developed areas of the country, in the Southeast of Brazil, the region is vulnerable to the impacts of climate change, with evidence of extreme events such as droughts and floods affecting the availability and quality of water. Hence, this study analyzes precipitation and streamflow rates data from the PSRB between 1939–2020 to investigate the spatial variability of average patterns and extreme events, trends, and their relationship with urban growth and socioeconomic development. The analysis reveals significant spatial variations in precipitation and runoff rates, with higher altitude areas, such as the Serra da Mantiqueira, exhibiting higher average values. Moreover, the Mann–Kendall trend results showed in most of the sites no significant trend regarding precipitation data; however, about 50% of the sites in the PSRB presented a decreasing trend of runoff rates. Since the precipitation does not explain identified changes in the hydrological patterns, the evaluation of the area’s urban growth and socioeconomic development throughout the decades suggested that human activities, such as those associated with urbanization, have played a significant role in altering the runoff patterns in the basin. These findings highlight the importance of sustainable land-use planning and water resource-management practices in the PSRB to mitigate the negative impacts of urbanization on the hydrological cycle and to enhance the resilience of the region’s water resources.

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Section: Precipitation Data Analysissupporting

confidence: 82%

“…presents an intense gradient towards regions with higher altitudes. The spatial precipitation patterns are in line with the results of [19,47], through different datasets.…”

Section: Precipitation Data Analysissupporting

confidence: 82%

Section: Precipitation Data Analysissupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

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Hydrological and Precipitation Extremes and Trends over the Paraiba do Sul River Basin, Brazil

Oliveira

Carvalho

Silva

et al. 2023

Climate

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“…Zilli et al (2016) analyzed extreme rainfall events in the rainy season across the southeastern coast of Brazil and, for the Paraiba do Sul River Valley Basin, they found an increase in the frequency and intensity of these events. Drought events are also recurrent in the region (Santana et al, 2020) and have a major impact on water supply as registered on 2013/2015 (Coelho et al, 2016;Marengo et al, 2015;Nobre et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The influence of climate parameters on fires in the Paraíba do Sul River valley, southeast Brazil

Oliveira,

Massi,

Bortolozo

et al. 2023

Rev. ambiente água

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Brazilian biomes have been experiencing an increase in fires during the whole year, but fires increase substantially during drier periods. Several indexes might be good indicators of the severity of the droughts, such as The Rainfall Anomaly Index (RAI), Standardized Precipitation Index (SPI) and the Vegetation Health Index (VHI). This study therefore aimed to understand the dynamics of climate, using some indexes and fires in Paraíba do Sul River Valley, Paulista portion, to verify whether fire is more likely to spread in hotter and drier years. We hypothesized that fire events are more frequent and burned areas are larger in hotter and drier years in the region. By conducting a cross-correlation analysis and separating the monthly data into dry and rainy seasons, it was possible to establish a correlation between climate parameters and fire. A significant correlation was found between RAI and fires in both seasons. Additionally, we observed that high occurrences of fire events and burning areas were more explained by RAI, VHI and SPI-3 in dry and wet seasons than by temperature and SPI-1, SPI-6 and SPI-12. We noticed a complex dynamic between fire events, burned area, the environment, and climatic variables. However, the studied indexes proved to be effective tools for detecting drought conditions in the region and their relationship to fire. Keywords: burning, climatic indexes, Paraíba do Sul River Valley.

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Microplastics in water from the confluence of tropical rivers: Overall review and a case study in Paraiba do Sul River basin

Costa

Zalmon

2023

Chemosphere

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Caracterização Espaço-Temporal das Secas na Bacia do Rio Paraíba do Sul

Cited by 6 publications

References 17 publications

Hydrological and Precipitation Extremes and Trends over the Paraiba do Sul River Basin, Brazil

Hydrological and Precipitation Extremes and Trends over the Paraiba do Sul River Basin, Brazil

The influence of climate parameters on fires in the Paraíba do Sul River valley, southeast Brazil

Microplastics in water from the confluence of tropical rivers: Overall review and a case study in Paraiba do Sul River basin

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