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		<isbn>978-85-17-00088-1</isbn>
		<label>59650</label>
		<citationkey>VianaSouzMontRibe:2017:EsEvRe</citationkey>
		<title>Estimativa da evapotranspiração real na bacia do rio Pirapama ? PE por meio de técnicas de SIG e imagens MODIS/Terra</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
		<numberoffiles>1</numberoffiles>
		<size>1005 KiB</size>
		<author>Viana, Jussara Freire de Souza,</author>
		<author>Souza, Alzira Gabrielle Soares Saraiva,</author>
		<author>Montenegro, Suzana Maria Gico Lima,</author>
		<author>Ribeiro Neto, Alfredo,</author>
		<electronicmailaddress>jussarafsouza@yahoo.com.br</electronicmailaddress>
		<editor>Gherardi, Douglas Francisco Marcolino,</editor>
		<editor>Aragão, Luiz Eduardo Oliveira e Cruz de,</editor>
		<e-mailaddress>daniela.seki@inpe.br</e-mailaddress>
		<conferencename>Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)</conferencename>
		<conferencelocation>Santos</conferencelocation>
		<date>28-31 maio 2017</date>
		<publisher>Instituto Nacional de Pesquisas Espaciais (INPE)</publisher>
		<publisheraddress>São José dos Campos</publisheraddress>
		<pages>1808-1815</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>The objective of this study is to apply a simple method to estimate the actual evapotranspiration at Rio Pirapama basin(Pernambuco State, Brazil), through estimates of reference evapotranspiration and vegetation cover fraction, using images from the MODIS / TERRA sensor (MOD13Q1 product NDVI). The estimation method of actual evapotranspiration through GIS techniques and satellite images makes use of the rate between reference evapotranspiration values and the vegetation cover fraction. To estimate the reference evapotranspiration (ETo), the methods of Penman-Monteith-FAO, Hargreaves, Camargo, Thornthwaite and Makkink were used, based on  daily weather data from three automatic stations from  INMET (Brazilian National Meteorological Institute), located around studied basins area. The results showed that the direct observation for the days analyzed allowed to note that the spatial distribution of the results of ETr (actual evapotranspiration) is the same, since the maps had the same origin (the map of vegetation cover fraction), differentiating at reference evapotranspiration values used for estimate of actual evapotranspiration. It is noted that the Makkinks method presented an upper limit of evapotranspiration than that estimated by the method of Camargo. This is because the estimation of the reference evapotranspiration was higher by Makkink method than Camargos.</abstract>
		<area>SRE</area>
		<type>Recursos hídricos</type>
		<language>pt</language>
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