Variação espaço-temporal do CO2 atmosférico e da Fluorescência Induzida pelo Sol para o Estado do Mato Grosso do Sul

• Autor(a) principal: Scarabel, Gabriel Bonetti
• Data de Publicação: 2021
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/214158
• topic: Dióxido de carbono; Ecossistemas; Sensoriamento remoto; Mudanças climáticas

The understanding the carbon dynamics for detecting sources and sinks in large areas, especially in agricultural or forestry areas, is a challenge to be overcome. In recent years remote sensing techniques are used for atmospheric carbon. The work consisted characterizing the temporal variability of XCO2 and SIF and their main control factors in the State of Mato Grosso do Sul, a satelliteassisted analysis was conduced in the regions of differents biomes and eucalyptus areas, with a time series of January 2015 to December 2018 for XCO2 and Sun Induced Fluorescence (SIF) data from Orbit Carbon Observatory 2 (OCO2). As for temporal variability, there is a negative significance correlation between XCO2 and SIF (P<0.05) for the entire state or regions , over the 4 years of studies.. For the spatial distribution, the IDW method (Inverse Distance Weighting) was used. In general, the Cerrado biome presents the period of high XCO2 between the months of May and October (Dry period), a similar behavior was observed for the Pantanal. For the Atlantic Forest this period extended from April to October, while for the eucalyptus macroregion it was shorter period observed in relation to the biomes, this having a lower concentration of atmospheric carbon in a reduced period, from June to October. Observing the study areas, the Pantanal biome presented lowest means for both SIF757 (0.94±0.021 W m-2 sr-1 m -1 ) and SIF771 (0.567±0.013 W m-2 sr-1 m -1 ) in relation to the other areas. The Atlantic Forest and Eucalyptus Macroregion had highest SIF averages being 1.07 ± 0.030 W m-2 sr-1 m -1 (SIF757) and 0.639±0.019 W m2 sr-1 m -1 (SIF771) for the Atlantic Forest and 1.03±0.038 W m-2 sr-1 m -1 (SIF757) and 0.616±0.025 W m-2 sr-1 m -1 (SIF771) for Eucalyptus macroregion. In the Cerrado, the means were 1.01±0.06 W m-2 sr-1 m -1 and 0.583±0.001 W m2 sr-1 m -1 for SIF757 e SIF771, respectively