Caracterização do regime de vento em superfície na Região Metropolitana do Rio de Janeiro

Pimentel, Leonardo Duarte; Marton, Edilson; Silva, Mauricio Soares da; Jourdan, Pedro

doi:10.1590/s1413-41522014000200003

Cited by 29 publications

(31 citation statements)

References 5 publications

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“…These months are influenced by meteorological systems of several scales and that interfere drastically in the pollutants concentration of the CRJ (LYRA et al, 2010;ZERI et al, 2011). The main conditions for increased pollutants concentrations in CRJ are associated with orographic complexity, turbulence levels, prevailing winds regime, mesoscale circulation and the South Atlantic Subtropical High (SASH) positioning, associated to the displacement of frontal systems (FS) (ZERI et al, 2011;SOARES et al, 2014). Table 3 shows the evolution of the number of violations of the air quality standards for CO concentrations in the study period for the stations belonging to the SMAC, comparing the estimates of the values of the concentrations at 1 hour and 8 hours with the standards primary and secondary established by CONAMA nº 03/90 resolution (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…Currently, the MRRJ has been facing several problems related to high CO concentrations that have been routinely detected through air quality stations (INEA, 2010;ZERI et al, 2011) and/or by the application of analytical models of atmospheric diffusion or air quality regulators (GUERRERO et al 2012;CUNHA et al, 2009;SOARES et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Soares et al (2014) carried out a study comparing the main regulatory models in the literature, AERMOD (American Meteorology Society-Environmental Protection Agency Regulatory Model) and CALPUFF (California Puff Model) in the Air Basin III with emphasis on sulfur dioxide (S0 2 ). Lyra et al (2011) evaluated particulate matter (PM 10 ) in CRJ based on the application of linear models.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Carbon monoxide trend in the city of Rio de Janeiro via mann-kendall and cusum tests

Góis¹,

Oliveira‐Júnior²,

Silva³

et al. 2017

Biosci. J.

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(2011) for positive values (Z > 0) and p-value > 0.05. CUSUM test showed that Q magnitude did not exceed the critical value at 1% and 5% probability levels. Cumulative Sum Test (CUSUM) showed homogeneous and significant CO concentrations. Significant abrupt changes occurred in the months of May, June, July, August and September and insignificant in January, February, June, August and November at 1% and 5% probability. CO concentrations occurred in the predominant directions North-Northwest (NNW), South-Southwest (SSW) and South-west (SW). Both sectors are influenced by the main synoptic systems (Frontal System and South Atlantic Subtropical High) that act on CRJ. MK and CUSUM tests proved to be efficient in evaluating trends and abrupt changes in CO concentrations and air quality stations in the CRJ.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon monoxide trend in the city of Rio de Janeiro via mann-kendall and cusum tests

Góis¹,

Oliveira‐Júnior²,

Silva³

et al. 2017

Biosci. J.

View full text Add to dashboard Cite

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“…In these cases, the warm and humid air the wind brings is cooled when encountering the radiatively cooled surface, increasing the relative humidity of the air resulting in condensation and fog formation (Robalinho et al, 2004). Pimentel et al (2014) believe that fog formation processes can be better understood with a wind regime study. Moreover, several studies use winds as a way of identifying the type of fog present in a given location.…”

Section: Introductionmentioning

confidence: 99%

Observational Analysis of Fog Events in the Area of the Rio de Janeiro Harbor, Brazil

et al. 2018

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ResumoNevoeiros são eventos meteorológicos nos quais a condensação de vapor d'água na atmosfera resulta em uma visibilidade horizontal inferior a 1000 m, dificultando o tráfego aéreo, marítimo e terrestre. São classificados de acordo com seus processos de formação e necessitam da presença de alta umidade relativa do ar, inversão térmica e estabilidade atmosférica. De uma forma geral, quando as temperaturas ambiente e de condensação se igualam, ocorre a formação de nevoeiros, podendo ocorrer tanto por resfriamento como por adição de umidade relativa do ar na atmosfera. O objetivo do trabalho é investigar restrições meteorológicas para operações do Porto do Rio de Janeiro através de análise de ocorrência de nevoeiros, assim como as condições meteorológicas associadas aos processos de formação. Foram estudados treze anos de dados de METAR, provenientes de estações meteorológicas de superfície presentes nos aeroportos Santos Dumont e Galeão. Os resultados mostraram uma forte sazonalidade dos eventos de nevoeiro, na qual as ocorrências de nevoeiros foram muito mais altas nos meses de outono e inverno. Também foi observada uma relação entre a variabilidade interanual e os ciclos do ENSO e uma forte dependência dos nevoeiros em relação às condições de pressão atmosférica e umidade relativa do ar. Palavras-chave: METAR; Ocorrência de nevoeiro; Baía de Guanabara AbstractFogs are meteorological events in which water vapor condensation in the atmosphere results in a horizontal visibility inferior to 1000 m, making air, sea and land traffic difficult. Fogs are classified according to their formation processes and require the presence of specific initial conditions, such as elevated humidity, thermal inversion and atmospheric stability. In general, when atmospheric temperature and dew point temperature are equal, there is fog formation. This can occur due to either atmospheric cooling or increase in atmospheric humidity. The objective of this study is to examine the meteorological conditions in Rio de Janeiro Harbor by analyzing the occurrence of fog, as well as observations of meta-oceanographic conditions associated with fog formation processes. Thirteen years of METAR data from surface meteorological stations located in Santos Dumont and Galeão airports were studied. The results revealed a strong seasonality of fog occurrence, showing a higher occurrence during autumn and winter. It was also observed that there is a relationship between the interannual variability and ENSO cycles and a strong fog event dependence on meteorological conditions such as atmospheric pressure and relative humidity.

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“…Esta pode contribuir para o aumento do transporte de poluentes e da turbulência para locais distantes das fontes de emissão ou até mesmo prejudicar a dispersão da concentração desses poluentes por apresentar uma circulação parcialmente fechada, ocasionando a retenção de ar poluído próximo às cidades. (Corrêa et al, 2007;Sousa, 2012;Hackerott, 2013;Pimentel et al, 2014). …”

Section: Introductionunclassified

Air Mass Flow Estimation by Differences of Sea and Land Surface Temperature Compared with in Situ Data

2016

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ResumoNeste trabalho foi realizada uma análise da brisa marítima na cidade do Rio de Janeiro, utilizando-se estações meteorológicas de superfície, sondagem atmosférica, perfilador de vento acústico e modelo computacional de balanço de energia à superfície. A partir desta análise foi estabelecida a correlação entre o fluxo de brisa marítima e a variação das temperaturas do oceano e do continente, bem como estimou-se o fluxo de vapor d'água transportado pela brisa marítima do oceano para o interior do continente, tomando exemplos de observações em dias de inverno e verão. Os resultados mostraram que o fluxo de vapor d'água transportado do mar ao continente é aproximadamente três vezes maior no verão quando comparado ao inverno, apresentando correlação não linear da variação da temperatura da superfície com a intensidade da brisa marítima. Palavras chaves: brisa-marítima, fluxo de massa e vento AbstractThis work conducted analysis of the behavior of the sea breeze at the surface and at altitude, in the city of Rio de Janeiro, using surface weather stations, computational model, atmospheric sounding and wind profiler. This analysis has established the non-linear correlation between the flow of breeze and the variation of the temperatures of the ocean and the continent and it was estimated the flow of wet mass carried by the sea breeze from the ocean to the interior of the continent, taking examples of observations in winter and summer days. The results showed that the mass flow of moist air is transported from the sea to the mainland is about three times higher in summer compared to winter. Featuring nonlinear correlation of the variation of surface temperature with the intensity of the sea breeze.

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Caracterização do regime de vento em superfície na Região Metropolitana do Rio de Janeiro

Cited by 29 publications

References 5 publications

Carbon monoxide trend in the city of Rio de Janeiro via mann-kendall and cusum tests

Carbon monoxide trend in the city of Rio de Janeiro via mann-kendall and cusum tests

Observational Analysis of Fog Events in the Area of the Rio de Janeiro Harbor, Brazil

Air Mass Flow Estimation by Differences of Sea and Land Surface Temperature Compared with in Situ Data

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