Estudo dos elementos meteorologicos na estimativa evapotranspiração potencial em casa de vegetação

AUTOR(ES)
DATA DE PUBLICAÇÃO

1997

RESUMO

The meteorological elements with air temperature (rnaximun, medium and minimun) , global radiation , windspeed and sunshine hours were obtained inside and outside of glasshouse during the period of march of 1995 to february of 1996, at Gifu, Japan.. This informations permited to analise the "greenhouse effect" on climatics variable. . The data obtained by the meteorologicalstations allowed to estimate and compare two empirical methods of estimate potencial evapotranspiration (Etp): the combinated method (Penrnan - Monteith (FAO» and the radiation method (radiation (FAO», to the internal and external conditions of glasshouse . The average potential evapotranspiration estimate outside of the glasshouse was in media 50.0 % superior at determinated value in internal of instalation for two equations. The radiation method overestimated the Etp values in relation at Penman - Monteith , in the two environments. The values of water evaporation inside and outside of glasshouse were determinated by a pan of reduce size. The water evaporation at " the sky open" was 23.0 % superior than the values determinated inside of the glasshouse. Basead on estimated Etp and on water evaporation data , it was conducted established a correlation study among estimated empirical methods ( Penman - Monteith and radiation (FAO) ) and the pan evaporation for two environments

ASSUNTO(S)

evapotranspiração evaporação irrigação

ACESSO AO ARTIGO

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