comparação entre valores de temperatura média do ar de estação convencional com valores obtidos em estação automática e análise de equações para estimativas de médias da temperatura do ar em lavras, mg comparison between values of air temperature average obtained by conventional station and automatic station and analysis of estimates equations of air temperature averages in lavras, mg, brazil
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ID: 255313
2009
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Abstract
Objetivou-se no presente trabalho, comparar as temperaturas do ar médias diárias obtidas por duas estações meteorológicas, a ECP (Estação Climatológica Principal) e a PCD (Plataforma de Coleta de Dados), ambas localizadas no campus da UFLA (Universidade Federal de Lavras) em Lavras, MG, e verificar a eficácia do cálculo de médias das temperaturas por meio da equação utilizada pela FAO (Food and Agriculture Organization) e pela média aritmética dos valores obtidos pela PCD em relação à equação utilizada pelo INMET (Instituto Nacional de Meteorologia), tomando essa como referência. Foram analisados dados de 2 anos consecutivos, representados pelos períodos de 30/06 a 31/12/2004, com um total de 137 dias de observações e de 01/01 a 04/12/2005, com um total de 186 dias de observações. A comparação entre as duas estações, mostrou uma boa concordância entre as temperaturas observadas (r² > 0,90). Com relação à utilização das equações, a que calcula a temperatura do ar utilizando a média aritmética apresentou melhor resultado (r² > 0,94). A equação utilizada pela FAO, demonstrou uma pequena tendência em superestimar os valores de temperatura.
The aim of this work was to compare the daily averages of the air temperatures obtained by two meteorological stations, ECP (Principal Climatological Station) and PCD (Data Collect Platform), both located at the experimental campus of UFLA (Federal University of Lavras) in Lavras, Minas Gerais State, Brazil, and verify the effectiveness of temperature averages calculated through the equation proposed by FAO (Food and Agriculture Organization) and for the arithmetic average of the values supplied by PCD in relation to the equation used by INMET (National Institute of Meteorology, Brazil), being this a reference. One analyzed data of consecutives two years, represented by the periods from 06/30 to 2004/12/31, with a total of 137 days of observation and 01/01 to 2005/12/04, with a total of 186 days of observation. The comparison between the two stations, showed a good agreement among the observed temperatures (r² > 0,90). With relation to the use of the equations, the one that calculates the temperature of the air using the arithmetic average, it presented better result (r² > 0,94). The equation used by FAO, demonstrated a small tendency in overestimating the temperature values.
The aim of this work was to compare the daily averages of the air temperatures obtained by two meteorological stations, ECP (Principal Climatological Station) and PCD (Data Collect Platform), both located at the experimental campus of UFLA (Federal University of Lavras) in Lavras, Minas Gerais State, Brazil, and verify the effectiveness of temperature averages calculated through the equation proposed by FAO (Food and Agriculture Organization) and for the arithmetic average of the values supplied by PCD in relation to the equation used by INMET (National Institute of Meteorology, Brazil), being this a reference. One analyzed data of consecutives two years, represented by the periods from 06/30 to 2004/12/31, with a total of 137 days of observation and 01/01 to 2005/12/04, with a total of 186 days of observation. The comparison between the two stations, showed a good agreement among the observed temperatures (r² > 0,90). With relation to the use of the equations, the one that calculates the temperature of the air using the arithmetic average, it presented better result (r² > 0,94). The equation used by FAO, demonstrated a small tendency in overestimating the temperature values.
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teramoto2009cinciacomparao
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| Authors | ;Érico Tadao Teramoto;Luiz Gonsaga de Carvalho;Antonio Augusto Aguilar Dantas |
| Journal | information and software technology |
| Year | 2009 |
| DOI |
10.1590/S1413-70542009000700017
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| URL | |
| Keywords | Keywords not found |
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