Modeling of daily intra-annual precipitation of the Parana III Basin associated with events ENSO/ Modelagem da precipitacao pluvial diaria intra-anual da Bacia Hidrografica Parana III associada aos eventos ENOS

The western region of Parana state, covering the Parana III Basin, has an agricultural system still largely dependent on climatic conditions. Thus, the aspects that involve the construction of probabilistic models, able to determine parameters of occurrence and quantification of the daily precipitat...

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Veröffentlicht in:Revista brasileira de engenharia agrícola e ambiental 2013-08, Vol.17 (8), p.883
Hauptverfasser: Bau, Antonio L, de Azevedo, Carlos A.V, Bresolin, Adriano de A
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container_title Revista brasileira de engenharia agrícola e ambiental
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creator Bau, Antonio L
de Azevedo, Carlos A.V
Bresolin, Adriano de A
description The western region of Parana state, covering the Parana III Basin, has an agricultural system still largely dependent on climatic conditions. Thus, the aspects that involve the construction of probabilistic models, able to determine parameters of occurrence and quantification of the daily precipitation have emerged as a necessary and fundamental factor for the achievement of regional projects in all areas. Therefore, the objective of this work was the construction of such models considering the occurrence of ENSO phenomena, using for this purpose data from 34 weather stations with series of more than 21 years of daily records, which were obtained from the ANA (Agencia Nacional de Aguas). The modeling of the occurrence of daily precipitation was treated through the Markov processes, while the modeling of the precipitated amount was performed by adjustment of the gamma function of probability. For validation of the adjustment, the Kolmogorov-Smirnov test was used. From the results it was established that this methodology can be applied to the simulation of synthetic series of daily rainfall for the study area. Key words: water resources, synthetics series, gamma probability distribution A regiao oeste do estado do Parana, que abrange a Bacia Hidrografica Parana III, possui um sistema agricola ainda muito dependente das condicoes climaticas. Diante disto, os aspectos que envolvem a construcao de modelos probabilisticos, capazes de determinar parametros de ocorrencia e quantificacao da precipitacao pluvial diaria, tem-se destacado como fator necessario e fundamental para consecucao dos projetos regionais, em todas as areas. Portanto, o objetivo deste trabalho foi realizar a construcao dos referidos modelos considerando-se a ocorrencia dos fenomenos ENOS e se utilizando, para tal, os dados de 34 estacoes meteorologicas com series superiores a 21 anos de registros diarios, obtidos junto a Agencia Nacional de Aguas. A modelagem da ocorrencia da precipitacao diaria foi tratada por meio dos processos de Markov enquanto a modelagem da quantidade precipitada foi feita por meio do ajuste a funcao gama de probabilidade. Para a validacao do ajuste utilizou-se o teste de Kolmogorov-Smirnov e a partir dos resultados obtidos foi possivel constatar que a metodologia desenvolvida pode ser aplicada para a simulacao de series sinteticas de precipitacao pluvial diaria para a area de estudo. Palavras-chave: recursos hidricos, series sinteticas, distribuicao gama de probabilidade
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Thus, the aspects that involve the construction of probabilistic models, able to determine parameters of occurrence and quantification of the daily precipitation have emerged as a necessary and fundamental factor for the achievement of regional projects in all areas. Therefore, the objective of this work was the construction of such models considering the occurrence of ENSO phenomena, using for this purpose data from 34 weather stations with series of more than 21 years of daily records, which were obtained from the ANA (Agencia Nacional de Aguas). The modeling of the occurrence of daily precipitation was treated through the Markov processes, while the modeling of the precipitated amount was performed by adjustment of the gamma function of probability. For validation of the adjustment, the Kolmogorov-Smirnov test was used. From the results it was established that this methodology can be applied to the simulation of synthetic series of daily rainfall for the study area. Key words: water resources, synthetics series, gamma probability distribution A regiao oeste do estado do Parana, que abrange a Bacia Hidrografica Parana III, possui um sistema agricola ainda muito dependente das condicoes climaticas. Diante disto, os aspectos que envolvem a construcao de modelos probabilisticos, capazes de determinar parametros de ocorrencia e quantificacao da precipitacao pluvial diaria, tem-se destacado como fator necessario e fundamental para consecucao dos projetos regionais, em todas as areas. Portanto, o objetivo deste trabalho foi realizar a construcao dos referidos modelos considerando-se a ocorrencia dos fenomenos ENOS e se utilizando, para tal, os dados de 34 estacoes meteorologicas com series superiores a 21 anos de registros diarios, obtidos junto a Agencia Nacional de Aguas. A modelagem da ocorrencia da precipitacao diaria foi tratada por meio dos processos de Markov enquanto a modelagem da quantidade precipitada foi feita por meio do ajuste a funcao gama de probabilidade. Para a validacao do ajuste utilizou-se o teste de Kolmogorov-Smirnov e a partir dos resultados obtidos foi possivel constatar que a metodologia desenvolvida pode ser aplicada para a simulacao de series sinteticas de precipitacao pluvial diaria para a area de estudo. 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Thus, the aspects that involve the construction of probabilistic models, able to determine parameters of occurrence and quantification of the daily precipitation have emerged as a necessary and fundamental factor for the achievement of regional projects in all areas. Therefore, the objective of this work was the construction of such models considering the occurrence of ENSO phenomena, using for this purpose data from 34 weather stations with series of more than 21 years of daily records, which were obtained from the ANA (Agencia Nacional de Aguas). The modeling of the occurrence of daily precipitation was treated through the Markov processes, while the modeling of the precipitated amount was performed by adjustment of the gamma function of probability. For validation of the adjustment, the Kolmogorov-Smirnov test was used. From the results it was established that this methodology can be applied to the simulation of synthetic series of daily rainfall for the study area. Key words: water resources, synthetics series, gamma probability distribution A regiao oeste do estado do Parana, que abrange a Bacia Hidrografica Parana III, possui um sistema agricola ainda muito dependente das condicoes climaticas. Diante disto, os aspectos que envolvem a construcao de modelos probabilisticos, capazes de determinar parametros de ocorrencia e quantificacao da precipitacao pluvial diaria, tem-se destacado como fator necessario e fundamental para consecucao dos projetos regionais, em todas as areas. Portanto, o objetivo deste trabalho foi realizar a construcao dos referidos modelos considerando-se a ocorrencia dos fenomenos ENOS e se utilizando, para tal, os dados de 34 estacoes meteorologicas com series superiores a 21 anos de registros diarios, obtidos junto a Agencia Nacional de Aguas. A modelagem da ocorrencia da precipitacao diaria foi tratada por meio dos processos de Markov enquanto a modelagem da quantidade precipitada foi feita por meio do ajuste a funcao gama de probabilidade. Para a validacao do ajuste utilizou-se o teste de Kolmogorov-Smirnov e a partir dos resultados obtidos foi possivel constatar que a metodologia desenvolvida pode ser aplicada para a simulacao de series sinteticas de precipitacao pluvial diaria para a area de estudo. 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Thus, the aspects that involve the construction of probabilistic models, able to determine parameters of occurrence and quantification of the daily precipitation have emerged as a necessary and fundamental factor for the achievement of regional projects in all areas. Therefore, the objective of this work was the construction of such models considering the occurrence of ENSO phenomena, using for this purpose data from 34 weather stations with series of more than 21 years of daily records, which were obtained from the ANA (Agencia Nacional de Aguas). The modeling of the occurrence of daily precipitation was treated through the Markov processes, while the modeling of the precipitated amount was performed by adjustment of the gamma function of probability. For validation of the adjustment, the Kolmogorov-Smirnov test was used. From the results it was established that this methodology can be applied to the simulation of synthetic series of daily rainfall for the study area. 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subjects Analysis
Aquatic resources
Markov processes
Rain and rainfall
Weather
title Modeling of daily intra-annual precipitation of the Parana III Basin associated with events ENSO/ Modelagem da precipitacao pluvial diaria intra-anual da Bacia Hidrografica Parana III associada aos eventos ENOS
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