Navegando por Assunto "Rain"

Agora exibindo 1 - 4 de 4

Acesso aberto (Open Access)
Análise do comportamento da precipitação e da vazão em bacias hidrográficas Amazônicas
(Universidade Federal do Pará, 2016-03-14) HACHEM, Bruno Penna; FERNANDES, Lindemberg Lima; http://lattes.cnpq.br/4641468846318922
The aim of this study was to analyze the behavior of precipitation and flow in two river regions of the state of Pará, where Northern Corridor and Coast Northeast Atlantic. Both have the same rainfall and physical properties of the bowls are similar, being different only in regard to level and vegetable preservation area. For this study, we used 7 gauged stations and 7 rainfall in the Northern Corridor and 6 fluviometric 6 and rainfall in Costa Northeast Atlantic. After collecting the data in HIDROWEB, they were organized in Microsoft Excel spreadsheets software for application of Mann Kendall and Spearman tests, which stated that there is no trend in the series analyzed (α=5%). Was detected that the density of fluviometric and rainfall stations is low , according to the thresholds established by WMO. The Pearson correlation coefficients showed up "strong" between precipitation and flow of the areas studied, which also suffer influence of climatic phenomena (El Niño and La Niña). It was possible to consider that in the most preserved region, the time lag between the maximum rainfall and the maximum flow rate averaged two months, while the region with greater human action this time was an average of 1 month.
Acesso aberto (Open Access)
Belém, uma história da chuva (1890 – 1920)
(Universidade Federal do Pará, 2023-08-29) GOMES, Kelvyn Werik Nascimento; RICCI, Magda Maria de Oliveira; http://lattes.cnpq.br/4368326880097299
This dissertation aims to explore the history of rain in the city of Belém, in the period from 1890 to 1922, with a specific focus on the influence that this natural phenomenon had on certain groups and the city itself. To achieve this, it examines the interest of various social actors in rain in Belém throughout the 19th century, but primarily in the final years of this century and the early 20th century. This includes the observations made by naturalist travelers who visited the region and observed the rain phenomenon, as well as the insights of memoirists and geographers. The work of naturalist Emilio Goeldi in collecting meteorological data is also highlighted, exploring how the study of rain was related to politics and Goeldi's public image, and how this interest became a significant part of scientific research in the region. This dissertation also focuses on the practical implications of rain in the daily lives of Belém's inhabitants. It examines how rain affected the relationship between the population, the Municipal Intendency, and nature, with an emphasis on attempts to address the population's demands regarding rain, especially in terms of urban transformations that have impacted and continue to affect the city and its residents. The influence of newspapers as mediators between the population and the government regarding rain-related issues is also explored, revealing how the media played a significant role in shaping public opinion and government actions. In conclusion, this dissertation delves into the importance of rain as a complex and multifaceted topic in Belém's history during the studied period, considering its impact on the scientific, political, and social spheres of the city.
Acesso aberto (Open Access)
Interações entre nuvens, chuvas e a biosfera na Amazônia
(Instituto Nacional de Pesquisas da Amazônia, 2005-06) DIAS, Maria Assunção Faus da Silva; COHEN, Júlia Clarinda Paiva; GANDU, Adilson Wagner
A review of results obtained within the Physical Climate component of LBA with respect to the interaction between the biosphere and cloud and rain formation in the Amazon Basin, in different seasons and different regions within the Basin is presented. The deforestation effect and the effect of biomass burning are discussed and the physical processes highlighted based on the data collected in several LBA intensive field campaigns. The complex interactions and the progress in the understanding their evolution based on the new datasets is presented.
Acesso aberto (Open Access)
Ocorrência de fármacos e desreguladores endócrinos em resíduos da estação de tratamento de água do Bolonha, Belém - PA
(Universidade Federal do Pará, 2022-05-10) FERREIRA, Clara Cardoso; TEIXEIRA, Luiza Carla Girard Mendes; http://lattes.cnpq.br/9773700229115395; https://orcid.org/0000-0002-0204-6825
Nowadays, the microcontaminants presence in water has been attracting the attention from scientific Community, since these compounds are found in small concentrations (ng/L or µg/L) and can cause adverse effects on the aquatic ecosystem and human health. Therefore, the presente study aimed to investigate the occurrence of 24 drugs and endocrine disruptors in water washing from Bolonha’s Water Treatment Plant (WTP) filters, located in Belém city, Northern region of Brazil. The correlation of these microcontaminants with physicochemical and biological characteristics investigated in the studied matrix was also evaluated. For the research, six sampling campaigns were carried out during the rainy season and six sampling campaigns in the dry season during the filter chamber washing. The compounds determination was carried out by solid phase extraction and chromatography coupled to mass spectrometry, gas chromatography for Ibuprofen, Paracetamol, 4-Nonylphenol, 4-Octylphenol, Bisphenol A, Gemfibrozil, Estrone, Estradiol, Etinilestradiol, Estriol, and in liquid phase for the Other compounds. The Losartana (5,5 to 738,7 ng/L) and Bisphenol A (20,9 to 518,9 ng/L) were detected in high concentrations and in all samples collected, being the compounds with the highest frequency of occurrence in matrix. The 4-Octyphenol (13,5 to 51 ng/L) and Loratadine (3,4 to 24,6 ng/L) showed low concentrations, however they were present in 11 of 12 samples showing a high frequency of occurrence in washing water. Caffeine (1090.2 ng/L) had the highest concentration among the contaminants, however, it was only detected in one sample. Multivariate analyzes showed that drugs and endocrine disruptors were more positively related to each other and to turbidity during the rainy season. It is worth noting that the compounds that were most strongly correlated with each other and with the physicochemical and biological variables of the washing water, in both periods, were 4-Octylphenol, Bisphenol A, Losartan and Loratadine. The study also suggests that the concentration of microcontaminants decreased with decreasing turbidity. In general, the results confirmed the influence of precipitation on the variables and indicated the presence of domestic sewage discharges in the supply system of the Bologna complex, especially as it is located in an area with intense anthropic activity.