Synoptic Patterns
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Modelagem estatística de extremos espaciais com base em processos max-stable aplicados a dados meteorológicos no estado do Paraná / Statistical modelling of spatial extremes based on max-stable processes applied to environmental data in the Parana State
The most mathematical models developed for rare events are based on probabilistic models for extremes. Although the tools for statistical modeling of univariate and multivariate extremes are well-developed, the extension of these tools to model spatial extremes data is currently a very active area of research. Modeling of maximum values under the spatial dom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2012
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2. Statistical Analysis of Spatial and Temporal Variability of Maximum Precipitation Events on the Rio Grande do Sul
Abstract: A statistical analysis of precipitation at Rio Grande do Sul State was presented in this article. The aim of this work was to identify spatial and temporal patterns of maximum precipitation, which was achieved by fitting a theoretical variogram in maximum annual rainfalls and its times of occurrence. In the literature, it was found that this patter
J. Aerosp. Technol. Manag.. Publicado em: 2012-06
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3. Caracterização física e dinâmica de episódios de chuvas intensas nas regiões sul e sudeste do Brasil / Physical and dynamical characteristics of heavy rainfall episodes in southern and southeastern Brazil
The heavy rainfall events occurred in Southern and Southeastern Brazil between 1960 and 2004 are investigated. It is observed positive trends in the annual frequency of these events in both regions in this period of 45 years. The trend in Southern Brazil is more significant. The atmospheric environments associated with these events also are investigated, but
Publicado em: 2009
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4. Atmospheric patterns associated with concentrations of tropospheric ozone in the metropolitan region of Sao Paulo / Padrões atmofésricos associados a concentrações de ozônio troposférico na região metropolitana de São Paulo
In the past few years, tropospheric ozone has been noticed to exceed the states environmental agency (CETESB) air quality standards more than any other air pollutant in the Sao Paulo Metropolitan Area (SPMA), Brazil. Its assumed that different atmospheric patterns are responsible for different impacts on ozone concentrations, due to already known phenomena c
Publicado em: 2009
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5. Dry spells occurrence in the northwest portion of Rio Grande do Sul state between the years 1978 and 2005 and its association to the climatic conditions in the atmosphere / Veranicos ocorridos na porção noroeste do estado do Rio Grande do Sul entre 1978 e 2005 e sua associação às condições climáticas na atmosfera
Agriculture plays an extremely important role in the economy of Rio Grande do Sul state. The target region of the present work in its northwest portion is represented by six cities: São Luiz Gonzaga, Santa Rosa, Cruz Alta, Iraí, Passo Fundo e Marcelino Ramos. It constitute a national focus of soya production and thus depend heavily on atmospheric condition
Publicado em: 2008
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6. Mineração de textos e gestão do conhecimento: aplicação na experiência operacional em geração de energia nuclear nas Usinas de Angra I e II
The knowledge is important differential for the organizations to achieve its aims. It to have two dimensions: tacit and explicit. The documents, reports, releases, articles and free texts are accessible forms to most of persons for become explicit the yours topics of knowledge. In last two decades, especially after intensive use of digital mídia and Interne
Publicado em: 2007
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7. Padrões sinóticos de circulação atmosférica associados ao jato em baixos níveis a leste da Cordilheira ds Andes, na América do Sul / Atmospheric circulation patterns associated with the south america low level jet at east of the Andes
The objective of this studywas toidentify the atmospheric patterns circulationassociated with the South American Low-level Jet (LLJ). The zonal (u) and meridional (v) wind, geopotential height (f), temperature (T), specific humidity (q) and other variables from National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR)
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2006
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8. 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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9. Atmospheric circulation patterns associated with the south america low level jet at east of the Andes / Padrões sinóticos de circulação atmosférica associados ao jato em baixos níveis a leste da Cordilheira ds Andes, na América do Sul
Este estudo teve como objetivo identificar os padrões atmosféricos associados à formação, manutenção e dissipação do Jato em Baixos Níveis (JBN) da América do Sul(AS). Foram utilizadas as componentes zonal (u) e meridional (v) do vento, altura geopotencial(f), temperatura(T), umidade específica(q), entre outras variáveis meteorológicas, obtidas
Publicado em: 2006
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10. Padrões sinóticos de circulação atmosférica associados ao jato em baixos níveis a leste da Cordilheira ds Andes, na América do Sul / Atmospheric circulation patterns associated with the south america low level jet at east of the Andes
Este estudo teve como objetivo identificar os padrões atmosféricos associados à formação, manutenção e dissipação do Jato em Baixos Níveis (JBN) da América do Sul(AS). Foram utilizadas as componentes zonal (u) e meridional (v) do vento, altura geopotencial(f), temperatura(T), umidade específica(q), entre outras variáveis meteorológicas, obtidas
Publicado em: 2006
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11. Climatologia e comportamento dos sistemas frontais sobre a América do Sul / Climatology and behaviour of frontal systems in south america
A climatology from 1980 to 2002 of frontal systems that reach Brazil and the main atmospheric patterns related to their displacement over the continent are analysed in this study. A reduction of frontal systems was observed in low latitudes and in summer. During the winter, more cold fronts can reach interior areas of Brazil. There is not a significant seaso
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/04/2005
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12. Aspectos sinóticos associados à ocorrência do jato em baixos níveis na América do Sul - reanálise NCEP/NCAR e simulação com o MCGA CPTEC/COLA / Synoptics aspects associated to the occurrence of the low levels jet in the south America - reanalyses of the NCEP/NCAR and simulation with the MCGA CPTEC/COLA
Cases of LLJ occurrence to the east of Andes were identified in NCEP/NCAR reanalyses data and in daily results of a climate simulation with the CPTEC/COLA AGCM, to identify the associated atmospheric patterns. weather forecasting of a case when there was occurrence of LLJ was also evaluated. Analysis performed in different seasons indicated similar synoptic
Publicado em: 2005