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Spatio-temporal variation of CO2 and solar-induced fluorescence from satellite data in areas of eucalyptus cultivation

Grant number: 19/11319-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2020
Effective date (End): February 28, 2021
Field of knowledge:Agronomical Sciences - Agronomy - Agricultural Meteorology
Principal Investigator:Newton La Scala Júnior
Grantee:Gabriel Bonetti Scarabel
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

Understanding the dynamics of carbon for sources and sinks detection in large areas, especially in agricultural areas, is a challenge to be overcome. Recently, the use of remote sensing techniques has been an alternative in studies that aim to evaluate the carbon dynamics. Therefore, our objective with this study will be to characterize the spatial and temporal variability of atmospheric concentrations of CO2 (XCO2) and sun - induced fluorescence (SIF) from satellite data in eucalyptus growing areas. The study will be developed for the region of Três Lagoas in Mato Grosso do Sul. A time series from 2014 to 2018 will be analyzed for the XCO2 and sun-induced fluorescence (SIF) data of the Carbon Observatory in Orbit-2 (OCO-2 ). Geostatistical techniques such as Kriging and Point Interpolation by Weighting - IDW will be used to detect sources and sinks of CO2. The spatial variability of the variables evaluated will be determined by calculating and modeling the experimental variogram, based on the theory of regionalized variables and the principles of the intrinsic hypothesis. The aim of this study is to elucidate some questions about the effect of planted forest cultivation on atmospheric CO2 concentrations and interactions with eucalyptus cultivation under tropical climate conditions. (AU)