Climatic Forecast
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Variability analysis of the monthly average minimum and maximum temperature in Rio Grande do Sul / Análise do comportamento das temperaturas máxima e mínima médias mensais para o estado do Rio Grande do Sul
A study has been done on the minimum and maximum temperature monthly averages in the State of Rio Grande do Sul, between 1918 and 2007. Data have been used collected in 10 meteorological stations spread all over the State territory. In a first stage, it has been verified a tendency of these variables in the months of February, May, August and November, throu
Publicado em: 2009
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14. Data mining climatic for frost and deficit hidric forescast / Mineração de dados climaticos para previsão local de geada e deficiencia hidrica
The losses that occur in agriculture are high, mainly due to the occurrence of crop damages due to climatic events. Many times, the social and economic impacts caused by the damages are significant, since they involve factors such as the production and the price of foods. For example, coffee and sugarcane production in São Paulo State suffer alternations mo
Publicado em: 2008
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15. Characterization and estimation of occurrence of heat waves with impact on broiler mortality / Caracterização e previsão de ondas de calor com impacto na mortalidade de frangos de corte
As broiler production increases in Brazil it appears the need of optimizing production system mainly due to the market competitiveness, and technological resources application are required for reducing losses. Productive loss decurrently from heat wave (HW) incidence is quite common in broiler rearing under tropical conditions, and the solution for this is a
Publicado em: 2008
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16. Zoneamento ecológico de Anastrepha fraterculus e Ceratitis capitata (Diptera: Tephritidae) em dois cenários climáticos no Brasil / Ecological zoning for Anastrepha fraterculus and Ceratitis capitata (Diptera, Tephritidae) in two climatic scenarios in Brazil
Exploratory ecological zoning for the South American fruit fly, Anastrepha fraterculus, and the medfly, Ceratitis capitata, were established based on data of 497 meteorological stations throughout Brazil, considering recent (1961 - 1990) and future climate forecast by IPPC (2080, A2 scenario). Climograms were used to estimate the South American fruit fly and
Publicado em: 2008
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17. IMPLEMENTATION AND EVALUATION OF METODOLOGIAS TO FORECAST FOR ÃNDICES REGIONAL RAIN INDEX IN THE RAINY SEASON IN REGION SEMI-ÃRIDA OF NORDESTE OF BRAZIL / AplicaÃÃo e AvaliaÃÃo de Metodologias para PrevisÃo de Ãndices Regionais de Chuva no PerÃodo da Quadra na RegiÃo Semi-Ãrida do Nordeste.
This study presents the application and evaluation of two distinct forecast systems Seasonal Regional Rainfall Indices on the Semi-Arid Northeast of Brazil and Basins of the Cearà State Regions. In the first case a set of numerical simulations (1971-2000) obtained from system forecast based on the theory of dynamic downscaling is used as data to input in th
Publicado em: 2007
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18. Sthocastic model to estimate the soybean productivity in the State of São Paulo through bivaried normal simulation / Modelo estocástico para estimação da produtividade de soja no Estado de São Paulo utilizando simulação normal bivariada
The availability of resources, as much of financial order and human labor, is scarse. Therefore, it must stimulates the regional planning that minimizes the use of resources. Then, the forecast of harvests through modelling techniques must previously on the basis of be carried through the regional characteristics, thus indicating the routes of the research,
Publicado em: 2007
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19. Previsão de atributos do clima e do rendimento de grãos de milho na região Centro-Sul do Brasil / Forecast of climatic features and corn grain yield in the Brazilian Center-South region
Crop forecast has become an important tool for the private and public agricultural policies to be established. Generally, crop forecast is composed by climatic forecast and the yield estimative of growth of economically interesting parts of crops. The climatic forecast can be performed through the analyses of historical series of the climatic features and of
Publicado em: 2006
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20. Uso do modelo Ceres-Maize para previsão de safra do milho "safrinha". / Using ceres-maize model for maize sown off-season yield forecast.
The objectives of the present work were: 1) to study the phenology and development of four maize hybrids: AG9010, DAS CO32, Exceler and DKB 333B sown off-season in Piracicaba region, State of São Paulo, Brazil; 2) to calibrate and test the CERES-Maize model to estimate the productivity and development for the four maize hybrids sown off-season for the menti
Publicado em: 2004
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21. Sistema de suporte à tomada de decisão para o manejo fitossanitário nos Campos Gerais do Paraná
Climate factors influence the occurrence of plant diseases. The objective of this work was to develop a decision support system for plant disease management and control, through the monitoring of the climatic variations and determine the risk of occurrence of plant diseases epidemics. For the decision support system a software was developed (Arc-Epidemic - A
Publicado em: 2004
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22. Sthocastic model for estimating potential maize productivity in Piracicaba-SP, Brazil. / Modelo estocástico para estimação de produtividade potencial de milho em Piracicaba - SP.
With the purpose of proposing a stochastic model for estimating potential maize productivity in Piracicaba (SP), as function of mean values of daily air temperature and solar radiation, a software was developed using Visual Basic for Windows, where it was applied for different agro climatic periods (sowing dates). The results allowed the following conclusion
Publicado em: 2004
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23. Implementation of statistical data assimilation system in physical space to the global model of CPTEC / Implementação do sistema estatístico de assimilação de dados em espaço físico para o modelo global do CPTEC
Atmospheric data (such as temperature, moisture, winds), collected by satellites, direct measurements from upper-air instruments and ground observation stations are used in order to estimate the state of the atmosphere as precise as possible. The estimation process, denominated data assimilation consists of observations, and the physical laws, which govern t
Publicado em: 2004
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24. Birds track their Grinnellian niche through a century of climate change
In the face of environmental change, species can evolve new physiological tolerances to cope with altered climatic conditions or move spatially to maintain existing physiological associations with particular climates that define each species' climatic niche. When environmental change occurs over short temporal and large spatial scales, vagile species are exp
National Academy of Sciences.