Atmospheric Indicators Evaluation Using WRF
                        Numerical Model in Rainfall Events in the City of Rio de Janeiro

Silva, Fabricio Polifke da; Silva, Maria Gertrudes Alvarez Justi da; Menezes, Wallace Figueiredo; Almeida, Vinícius Albuquerque de

doi:10.11137/2015_2_81_90

Cited by 8 publications

(12 citation statements)

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“…The VMC code has been effective in quick estimation of the doses of radioactive sources in planned or accidental exposures situations, especially for cases of handling radioactive sources. The code can be used with the source near the surface of any part of the body with accurate dose estimation ( 5 , 6 , 32 ).…”

Section: Description Of Different Reconstructive Dosimetry Methodsmentioning

confidence: 99%

“…In May 2000, an operator at an industrial radiography company in Brazil suffered hand injuries from exposure to a 60 Co radioactive source with 2.11 TBq activity. Reconstructive dosimetry was conducted by Da Silva ( 5 , 6 ), together with the accident investigation. The effective and absorbed dose estimations were performed using all three different techniques and approaches (physical dosimetry, computational dosimetry and biological dosimetry).…”

Section: The Brazilian Radiological Accidentmentioning

confidence: 99%

“…The Brazilian gammagraphy accident that occurred in May 2000 involved an operator performing routine exposures with a 60 Co apparatus containing a 2.11 TBq source. He received a localized exposure when his left hand was very close to the radioactive source for approximately 30 s ( 5 , 6 ).…”

Section: Introductionmentioning

confidence: 99%

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Reconstructive dosimetry for cutaneous radiation syndrome

Lima

Degenhardt

et al. 2015

Braz J Med Biol Res

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According to the International Atomic Energy Agency (IAEA), a relatively significant number of radiological accidents have occurred in recent years mainly because of the practices referred to as potentially high-risk activities, such as radiotherapy, large irradiators and industrial radiography, especially in gammagraphy assays. In some instances, severe injuries have occurred in exposed persons due to high radiation doses. In industrial radiography, 80 cases involving a total of 120 radiation workers, 110 members of the public including 12 deaths have been recorded up to 2014. Radiological accidents in industrial practices in Brazil have mainly resulted in development of cutaneous radiation syndrome (CRS) in hands and fingers. Brazilian data include 5 serious cases related to industrial gammagraphy, affecting 7 radiation workers and 19 members of the public; however, none of them were fatal. Some methods of reconstructive dosimetry have been used to estimate the radiation dose to assist in prescribing medical treatment. The type and development of cutaneous manifestations in the exposed areas of a person is the first achievable gross dose estimation. This review article presents the state-of-the-art reconstructive dosimetry methods enabling estimation of local radiation doses and provides guidelines for medical handling of the exposed individuals. The review also presents the Chilean and Brazilian radiological accident cases to highlight the importance of reconstructive dosimetry.

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Section: Description Of Different Reconstructive Dosimetry Methodsmentioning

confidence: 99%

Section: The Brazilian Radiological Accidentmentioning

confidence: 99%

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Reconstructive dosimetry for cutaneous radiation syndrome

Lima

Degenhardt

et al. 2015

Braz J Med Biol Res

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“…Nascimento (2005), os parâmetros para a previsão de eventos convectivos são capazes de apontar condições potencialmente favoráveis à ocorrência de tempestades (severas ou não), porém não exploram a questão importante de iniciação convectiva, assim tais parâmetros possuem alto índice de alarme falso. Neste contexto, Silva et al (2015) realizaram a avaliação de indicadores atmosféricos utilizando o modelo WRF em eventos de chuva na cidade do Rio de Janeiro, sendo que K e TT apresentaram alta probabilidade de detecção para os dias de ocorrência de chuvas severas, mas também apresentaram probabilidade de alarme falso.…”

Section: Análise Preliminar Dos íNdices De Instabilidade a Partir De unclassified

Preliminary Analysis of Instability Indices from Simulations With Weather Research and Forecasting (WRF) Model for the Southern Brazil

Machado¹,

Cardoso

Quadro

et al. 2017

Anuário IGEO UFRJ

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This paper aims to evaluate of the WRF model to simulate the instability indices during storms springs with El Niño/Southern Oscillation in four cities of Southern Brazil: Curitiba, Florianópolis, Foz do Iguaçu and Porto Alegre. The K and TT values were satisfactorily simulated and LI index were reasonably simulated by WRF. The values of CAPE showed the largest differences compared with observations. When we analyzed the behavior of K, TT and LI indices with the METAR code, it was observed that the simulated extreme values by WRF occurred at times to unstable weather records in the airports.

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“…Doswell (2001) também realça a importância dos processos dinâmicos e termodinâmicos em escala sinótica, para a formação e evolução de sistemas de mesoescala que produzem condições de tempo severo, tanto em termos de precipitação, como de vento. Para o MRJ, Polifke da Silva et al (2015) discutem o papel do ambiente em escala sinótica para sistemas que produzem tempo severo. Os autores encontraram que a divergência do vento em 300 hPa foi o indicador atmosférico que mostrou maior eficiência na detecção dos ECIs, seguido pela umidade específica em 850 hPa, energia total de tempestades severas em 500 hPa e água precipitável.…”

Section: Introductionunclassified

Climatologia de Chuvas Intensas no Município do Rio de Janeiro

Pristo

Dereczynski

Regoto

et al. 2018

Rev. bras. meteorol.

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ResumoNeste trabalho elabora-se uma climatologia de eventos de chuvas intensas (ECIs) no Município do Rio de Janeiro (MRJ) a partir dos dados observados pelo Sistema Alerta Rio no período 1997-2016. Um critério objetivo de identificação de ECIs é avaliado, confrontando-se dados de chuva com informações sobre os transtornos deflagrados por tais eventos sobre a cidade. O critério estabelece que um ECI se caracteriza por um total pluviométrico diário igual ou superior a seu percentil 95, com ocorrência no mesmo dia de pelo menos um registro de chuva em 15 minutos também igual ou superior a seu percentil 95. Ademais a climatologia da precipitação no MRJ é revisitada. Os resultados indicam que 33% do total pluviométrico anual médio no MRJ (1192 mm) ocorre durante 6,6 ECIs. Os máximos (mínimos) de ECIs são observados no Sumaré e Mendanha (na Saúde e Tijuca), numa média 30 dias por ano. Em média os ECIs ocorrem com maior frequência no verão (43,7%), seguido do outono (30,9%), na primavera (18,2%) e inverno (7,2%). Nota-se em geral uma tendência de aumento no número de ECIs durante o período analisado. AbstractIn this work a climatology of Heavy Rainfall Events (HREs) is elaborated for the Municipality of Rio de Janeiro (MRJ), based on Alerta Rio´s rain gauge network for the period 1997-2016. An objective criterion for the identification of HREs is assessed by comparing rainfall data with data disaster caused by such events over the city. The criterion establishes that an HRE is characterized by a daily rainfall equal or above its 95th percentile, occurring on the same day at least one rainfall record in 15 minutes, also equal or above its 95 th percentile. In addition, the precipitation climatology in the MRJ is revisited. The results show that 33% of annual mean precipitation in MRJ (1192 mm) falls during 6.6 HREs. The maximum (minimum) of HREs are observed in Sumaré and Mendanha (in Tijuca and Saúde), on average of 30 days per year. In general, HREs occur more frequently in the summer (43.7%), followed by autumn (30.9%), spring (18.2%) and winter (7.2%). In general, there is a tendency for an increase in the number of HREs during the analyzed period.

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Atmospheric Indicators Evaluation Using WRF Numerical Model in Rainfall Events in the City of Rio de Janeiro

Cited by 8 publications

References 0 publications

Reconstructive dosimetry for cutaneous radiation syndrome

Reconstructive dosimetry for cutaneous radiation syndrome

Preliminary Analysis of Instability Indices from Simulations With Weather Research and Forecasting (WRF) Model for the Southern Brazil

Climatologia de Chuvas Intensas no Município do Rio de Janeiro

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