Sun-induced leaf fluorescence was inferred by using highresolution (0.5 cm-1) radiance measurements and simulated spectra of thesolar irradiance at the ground level, in the region of the O2-B absorptionband. The minimization of a cost function was performed in the Fouriertransform domain in order to make an accurate fit of the Instrumental Line-Shape that convoluted the simulated spectrum. Second- order polynomialswere used to fit the leaf fluorescence and reflectance in the 100-cm-1-widespectral window. The scale and the instrumental conversion factor were alsofitted in order to obtain an accuracy that could not be attained by using theradiance measurements alone.
Sun-induced leaf fluorescence retrieval in the O2-B atmospheric absorption band
Marina Mazzoni;Samuele Del Bianco
2008
Abstract
Sun-induced leaf fluorescence was inferred by using highresolution (0.5 cm-1) radiance measurements and simulated spectra of thesolar irradiance at the ground level, in the region of the O2-B absorptionband. The minimization of a cost function was performed in the Fouriertransform domain in order to make an accurate fit of the Instrumental Line-Shape that convoluted the simulated spectrum. Second- order polynomialswere used to fit the leaf fluorescence and reflectance in the 100-cm-1-widespectral window. The scale and the instrumental conversion factor were alsofitted in order to obtain an accuracy that could not be attained by using theradiance measurements alone.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
