{"id":14486,"date":"2020-12-07T15:00:53","date_gmt":"2020-12-07T15:00:53","guid":{"rendered":"https:\/\/conexoesamazonicas.org\/?post_type=artigos&#038;p=14486"},"modified":"2025-06-16T01:59:52","modified_gmt":"2025-06-16T01:59:52","slug":"utilizando-imagens-de-satelites-para-estimar-evapotranspiracao2","status":"publish","type":"post","link":"https:\/\/conexoesamazonicas.org\/en\/utilizando-imagens-de-satelites-para-estimar-evapotranspiracao2\/","title":{"rendered":"Using satellite images to estimate evapotranspiration"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"14486\" class=\"elementor elementor-14486\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58f401b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58f401b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a4ab1d6\" data-id=\"a4ab1d6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f7b5cb5 elementor-widget elementor-widget-heading\" data-id=\"f7b5cb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Using satellite images to estimate evapotranspiration<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7359b51 elementor-widget elementor-widget-text-editor\" data-id=\"7359b51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p style=\"color: #aaaaaa;\">7 December 2021 | Duration of reading: 3 min<\/p><p style=\"color: #aaaaaa;\"><i>By Leonardo Laipelt<\/i><\/p><p class=\"has-drop-cap\">The<a href=\"https:\/\/brasilescola.uol.com.br\/biologia\/ciclo-agua.htm#:~:text=O%20ciclo%20da%20%C3%A1gua%2C%20tamb%C3%A9m,%2C%20hidrosfera%2C%20litosfera%20e%20biosfera.\" target=\"_blank\" rel=\"noopener\"> ciclo hidrol\u00f3gico ou o ciclo da \u00e1gua<\/a>\u00a0\u00e9 fundamental para a manuten\u00e7\u00e3o da vida no nosso planeta. Ele \u00e9 composto por processos que percebemos no nosso cotidiano, como a chuva e o transporte de \u00e1gua do rio para o oceano. O fluxo da \u00e1gua que retorna para a atmosfera \u00e9 conhecido como evapotranspira\u00e7\u00e3o: a \u00e1gua passa do seu estado l\u00edquido para vapor devido \u00e0 transpira\u00e7\u00e3o das plantas e \u00e0 evapora\u00e7\u00e3o do solo ou de superf\u00edcies l\u00edquidas tais como oceanos e lagos. Agora, imagine medir com precis\u00e3o esse importante fluxo!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebb8b94 elementor-widget elementor-widget-text-editor\" data-id=\"ebb8b94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 O uso de imagens de sat\u00e9lites para estimar a evapotranspira\u00e7\u00e3o \u00e9 uma alternativa porque permite avalia\u00e7\u00f5es em maior escala espacial e temporal e em lugares de dif\u00edcil acesso. No estudo \u201c<a href=\"https:\/\/www.mdpi.com\/2072-4292\/12\/7\/1108\" target=\"_blank\" rel=\"noopener\">Avalia\u00e7\u00e3o da calibra\u00e7\u00e3o autom\u00e1tica do algoritmo SEBAL para estimar o particionamento energ\u00e9tico da superf\u00edcie no per\u00edodo seco em regi\u00e3o de transi\u00e7\u00e3o de Floresta-Cerrado no Brasil<\/a>.\u201d As estimativas de evapotranspira\u00e7\u00e3o com imagens de sat\u00e9lite do programa Landsat (<a href=\"https:\/\/www.usgs.gov\/core-science-systems\/nli\/landsat\" target=\"_blank\" rel=\"noopener\">mais informa\u00e7\u00f5es aqui<\/a>) foram comparadas com as estimativas obtidas utilizando dados de torres de fluxo (<a href=\"https:\/\/daac.ornl.gov\/LBA\/guides\/CD32_Brazil_Flux_Network.html\" target=\"_blank\" rel=\"noopener\">mais informa\u00e7\u00f5es aqui<\/a>). A \u00e1rea de estudo foi a Ilha do Bananal, que fica inundada sazonalmente e est\u00e1 em uma regi\u00e3o de transi\u00e7\u00e3o entre os biomas Cerrado e Amaz\u00f4nia (veja a Figura abaixo).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f324e54 elementor-widget elementor-widget-spacer\" data-id=\"f324e54\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f395d7 elementor-widget elementor-widget-image\" data-id=\"5f395d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"621\" src=\"https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-1536x621.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-789\" alt=\"\" srcset=\"https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-1536x621.png 1536w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-300x121.png 300w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-1024x414.png 1024w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-768x311.png 768w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-2048x828.png 2048w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/Fig_site-1568x634.png 1568w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Estimativas de evapotranspira\u00e7\u00e3o utilizando imagens de sat\u00e9lite em \u00e1rea de transi\u00e7\u00e3o Amaz\u00f4nia-Cerrado. Fonte: Laipelt et al. (2020).<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d21d623 elementor-widget elementor-widget-spacer\" data-id=\"d21d623\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4683dab elementor-widget elementor-widget-text-editor\" data-id=\"4683dab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Al\u00e9m de demonstrar a acur\u00e1cia das estimativas com imagens de sat\u00e9lites, foi poss\u00edvel analisar os diferentes padr\u00f5es de evapotranspira\u00e7\u00e3o para diferentes usos e cobertura do solo. Por exemplo, \u00e1reas de floresta apresentaram valores de evapotranspira\u00e7\u00e3o m\u00e9dio de aproximadamente 4,2 mm por dia, enquanto \u00e1reas de pastagem apresentam taxas menores do que a metade disto (2,0 mm por dia). Essa diferen\u00e7a entre o quanto cada cobertura do solo libera de \u00e1gua para a atmosfera vem sendo estudada para avaliar quais s\u00e3o as poss\u00edveis consequ\u00eancias dessas altera\u00e7\u00f5es no balan\u00e7o h\u00eddrico e no clima. No exemplo, a substitui\u00e7\u00e3o de \u00e1reas de florestas por pastagem reduz a quantidade de \u00e1gua que vai para a atmosfera atrav\u00e9s de evapotranspira\u00e7\u00e3o.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-586bfb9 elementor-widget elementor-widget-text-editor\" data-id=\"586bfb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-indent: 36pt; text-align: left;\"><span lang=\"PT-BR\">Com imagens de sat\u00e9lites, portanto, a estimativa da evapotranspira\u00e7\u00e3o ganha novas propor\u00e7\u00f5es, permitindo an\u00e1lises em diferentes escalas regionais e globais para longos per\u00edodos, possibilitando uma maior compreens\u00e3o da din\u00e2mica existente entre a superf\u00edcie e a atmosfera e, por fim, as consequ\u00eancias das altera\u00e7\u00f5es de uso do solo.<\/span><\/p><p><strong>Science is done collaboratively<\/strong><\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Esta pesquisa foi realizada pelo Grupo de Pesquisa de Hidrologia de Grande Escala, do Instituto de Pesquisas Hidr\u00e1ulicas (<a href=\"https:\/\/www.ufrgs.br\/iph\/\" target=\"_blank\" rel=\"noopener\">IPH-UFRGS<\/a>), e financiada pela Ag\u00eancia Nacional de \u00c1guas (<a href=\"https:\/\/www.gov.br\/ana\/pt-br\" target=\"_blank\" rel=\"noopener\">ANA<\/a>) e pelo Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico (<a href=\"https:\/\/www.gov.br\/cnpq\/pt-br\" target=\"_blank\" rel=\"noopener\">CNPq<\/a>).<\/p><p><strong>Quer saber mais? Acesse o material abaixo!<\/strong><\/p><p>Site do\u00a0<a href=\"https:\/\/www.ufrgs.br\/hge\/\">Grupo de Pesquisa de Hidrologia de Grande Escala<\/a>.\u00a0<\/p><p>Laipelt, L. S., Ruhoff, A. L., Fleischmann, A. S., Kayser, R. H. B., Kich, E. M., Rocha, H. R., Neale C. (2020). Assessment of an Automated Calibration of the SEBAL Algorithm to Estimate Dry-Season Surface-Energy Partitioning in a Forest-Savanna Transition in Brazil. Remote Sensing, 12:\u00a0 1108. (<a href=\"https:\/\/www.mdpi.com\/2072-4292\/12\/7\/1108\" target=\"_blank\" rel=\"noopener\">Link<\/a>).<\/p><div>\u00a0<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-38b1687 elementor-widget elementor-widget-image\" data-id=\"38b1687\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-300x300.jpg\" class=\"attachment-medium size-medium wp-image-752\" alt=\"\" srcset=\"https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-300x300.jpg 300w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-150x150.jpg 150w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-768x768.jpg 768w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-12x12.jpg 12w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-830x830.jpg 830w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-230x230.jpg 230w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-350x350.jpg 350w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429-480x480.jpg 480w, https:\/\/conexoesamazonicas.org\/wp-content\/uploads\/2021\/01\/IMG_1108_2-e1621012066429.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd88335 elementor-widget elementor-widget-text-editor\" data-id=\"fd88335\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Leonardo Laipelt \u00e9 engenheiro ambiental pela Universidade Federal do Rio Grande do Sul (UFRGS). Veja mais\u00a0na\u00a0<a href=\"http:\/\/lattes.cnpq.br\/6660359948234069\" target=\"_blank\" rel=\"noopener\">Lattes<\/a><a href=\"http:\/\/lattes.cnpq.br\/6660359948234069\" target=\"_blank\" rel=\"noopener\">\u00a0<\/a>and at\u00a0<a href=\"https:\/\/www.researchgate.net\/profile\/Leonardo_Laipelt\" target=\"_blank\" rel=\"noopener\">ResearchGate<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bd15a60 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bd15a60\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a8a7bb2\" data-id=\"a8a7bb2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1c3bc01 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1c3bc01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36a41f0 elementor-widget elementor-widget-heading\" data-id=\"36a41f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Leia tamb\u00e9m<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ac1e3a elementor-align-right elementor-widget elementor-widget-button\" data-id=\"6ac1e3a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-left-arrows\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\"> Voltar<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-819842c elementor-widget elementor-widget-html\" data-id=\"819842c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script type=\"text\/javascript\">\r\n\r\njQuery(document).ready(function() {\r\n    jQuery('#wph-back-button').on('click', function() {\r\n      window.history.go(-1);\r\n      return false;\r\n    });\r\n});\r\n\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Utilizando imagens de sat\u00e9lites para estimar evapotranspira\u00e7\u00e3o \u00a0 07 de dezembro de 2020 | Tempo de leitura: 3 minutos Por Leonardo Laipelt O ciclo hidrol\u00f3gico ou o ciclo da \u00e1gua\u00a0\u00e9 fundamental para a manuten\u00e7\u00e3o da vida no nosso planeta. Ele [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":774,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[76,45],"class_list":["post-14486","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-conexoes-amazonicas","tag-76","tag-blog"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/posts\/14486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/comments?post=14486"}],"version-history":[{"count":2,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/posts\/14486\/revisions"}],"predecessor-version":[{"id":14501,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/posts\/14486\/revisions\/14501"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/media\/774"}],"wp:attachment":[{"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/media?parent=14486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/categories?post=14486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/conexoesamazonicas.org\/en\/wp-json\/wp\/v2\/tags?post=14486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}