Comparação entre dados de campo e de satélite para estimativa da demanda hídrica das culturas
Comparação entre dados de campo e de satélite para estimativa da demanda hídrica das culturas
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Palavras-chave: dados meteorológicos; evapotranspiração; sensoriamento remoto.
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Keywords: meteorological data; evapotranspiration; remote sensing.
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Abstract: The estimation of crop water demand is an essential component for efficient irrigation management, particularly in contexts of water scarcity and the need to optimize water use. Traditionally, this estimation is based on field measurements such as meteorological data, soil moisture sensors, and lysimeters, which provide high point-level accuracy but are limited in spatial scale. In recent decades, remote sensing has gained prominence as a source of information for estimating evapotranspiration and crop water consumption, enabling analyses at larger scales, with higher temporal frequency and lower operational cost. Despite these advances, there is still a gap related to the objective comparison between these two types of data, field-based and satellite-based, especially in the context of irrigation decision-making. Therefore, it is necessary to understand the advantages, limitations, and complementarities of both approaches, the main methods currently used to estimate crop water demand, and how their integration can enhance irrigation efficiency in different agricultural systems.
- Lucas Santiago Lima
- Vinícius Villa e Vila
- Tiago Alexandre Rozinholli
- Patricia Angélica Alves Marques