Mesoscale Convective Systems
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. SPATIAL, SEASONAL, AND TEMPORAL VARIATIONS IN RAINFALL AGGRESSIVENESS IN THE SOUTH OF BRAZIL
ABSTRACT The objective of this study is to evaluate spatial and temporal variations in rainfall aggressiveness in southern Brazil. A total of 181 rain gauge stations located in southern Brazil with rainfall time series from 1976 to 2015 were used. Seasonal and annual rainfall aggressiveness values measured according to the Modified Fournier Index (MFI) were
Eng. Agríc.. Publicado em: 12/08/2019
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2. Características dos sistemas convectivos de mesoescala nas simulações climáticas do RegCM4 / Characteristics of Mesoscale Convective Systems in the climate simulations of RegCM4
Técnicas de rastreamento como o Forecasting and Tracking the evolution of Cloud Clusters (ForTraCC) e simulações numéricas têm sido utilizadas para entender o desenvolvimento de sistemas convectivos de mesoecala (SCMs), que estão associados à precipitação intensa, rajadas de vento, granizo e até mesmo tornados. Este trabalho adaptou o ForTraCC para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/10/2012
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3. Comparative analysis of mesoscale convective complexes using models simulations and satellite observations / Análise comparativa de complexos convectivos de mesoescala através de simulações de modelo e observações de satélite
In this study was analyzed the behavior of the Mesoscale Convective Complexes (MCC) that occurred in the South Central region of South America (40°S-15°S and 80°W e 30°W). The period chosen for the study of these systems was between September to March for the years 2007 and 2010. The FORTRAC tool was used to identify MCCs and found 43 systems. The period
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2011
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4. Impacto da assimilação de dados de precipitação no sistema RPSAS/CPTEC: um estudo de caso de complexo convectivo de mesoescala / Impact of precipitation assimilation in CPTEC s RPSAS system: a case study of mesoscale convective system
This work presents the results of a impact study of estimated precipitation data assimilation in RPSAS from CPTEC, during January 2003. In this study, the precipitation assimilation was performed during the generation of first guess by the regional Eta model using a methodology similar to nudging. From this first guess, the RPSAS system generates an analysis
Publicado em: 2010
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5. Impacto da assimilação de dados de precipitação no sistema RPSAS/CPTEC: um estudo de caso de complexo convectivo de mesoescala / Impact of precipitation assimilation in CPTEC s RPSAS system: a case study of mesoscale convective system
O presente trabalho apresenta os resultados de um estudo de impacto da assimilação de dados de precipitação estimada do Tropical Rainfall Measuring Mission (TRMM) no Regional Physical-space Statistical Analysis System (RPSAS) do Centro de Previsão de Tempo e Estudos Climáticos (CPTEC), durante o mês de janeiro de 2003. Neste estudo, a assimilação de
Publicado em: 2010
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6. Lightning study in association of mesoscale convective systems in the Southest region of Brazil / Estudo das Descargas Elétricas Atmosféricas associadas a sistemas convectivos de mesoescala para a Região Sudeste do Brasil
In this work it is presented the study of 6 years of detected lightning data in association to the occurrence of mesoscale convective systems in the region located between 15S - 27S and 35W - 55W. The Lightning data were provided by FURNAS Centrais Elétricas S.A. for the period 2002-2007. Geostationary satellite images, enhanced in the infrared channel, wer
Publicado em: 2009
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7. Relationship between physical properties convective clouds and cloud-ground lightining / Relações das propriedades físicas das nuvens convectivas com as descargas elétricas
The knowledge of physical and microphysical properties associated to cloud-ground lightning occurrence is very important for determination of potential forecast parameters of electrical discharges activity. The identification of these parameters could give valuable contribution for different segments of society, such as the sectors of electric energy distrib
Publicado em: 2009
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8. Space-temporal behavior of rainfall in Southern Brazil using TRMM and SRTM data / Comportamento espaço-temporal da precipitação na Região Sul do Brasil utilizando dados TRMM e SRTM
This work investigates the space-temporal behavior of rainfall in Southern Brazil during the 1988 and 2007 period. The evaluation was based on three features: 1) climatological aspects, 2) geographic trends from relief features, and 3) main variability modes. Two complementary data sets of rainfall were used: rain gauges and rainfall estimates from the Tropi
Publicado em: 2009
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9. Study of a convective situation (growth-dissipation) using data from Doppler meteorological radar in Manaus / Estudo de uma situação convectiva (iniciação-dissipação) utilizando dados do radar meteorológico doppler de Manaus
Os Sistemas Convectivos de Mesoescala (SCM) são sistemas característicos da região amazônica, esta região possui fatores favoráveis a formação da atividade convectiva, ou seja, elevados valores de temperatura e umidade do ar. Estes sistemas normalmente ocasionam ventos fortes, descargas elétricas atmosféricas e ocasionalmente, granizo, além de exp
Publicado em: 2009
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10. Experimentos com o modelo regional eta em diferentes configurações durante o período salljex e mecanismos de mesoescala associados ao desenvolvimento de scm / Experiments with the regional eta model in different settings during the salljex period and mesoescale mechanisms associated with MCS development
The rainfall regime over southern Brazil, Uruguay and northern Argentina is strongly influenced by Mesoscale Convective Complexes (MCCs) that develop during night time associated with the Low Level Jet (LLJ) to the east of Andes. As they are mesoscale systems, their predictability depends on the model resolution and ability in representing the main features
Publicado em: 2008
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11. Atividade Convectiva no Sul da América do Sul / Mesoscale Convective Systems (MCS) at South of South America
In this work synoptic and mesoscale aspects are analyzed in association to the formation of Mesoscale Convective Systems (MCS) at South of South America (SA) that reached the State of Rio Grande do Sul (RS) in some moment during its life time. The selected period involves the month of February of the years 2002 to 2005. Among the identified MCS, two cases ha
Publicado em: 2006
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12. Analysis of Mesoscale Convective Systems ocurred in March/2002 on the State of Rio Grande do Sul. / Análise dos sistemas convectivos de mesoescala ocorridos em março/2002 no Estado do Rio Grande do Sul
Sistemas Convectivos de Mesoescala (SCM) são sistemas meteorológicos que ocorrem freqüentemente no sul da América do Sul, principalmente nos meses quentes. Neste trabalho os SCM observados durante o mês de março de 2002 sobre o Estado do Rio Grande do Sul, Brasil, são analisados. Neste mês uma grande quantidade de SCM se formou em conseqüência das
Publicado em: 2004