Sun-induced leaf fluorescence retrieval in the O2-B atmospheric absorption band.
Sun-induced leaf fluorescence was inferred by using high resolution (0.5 cm(-1)) radiance measurements and simulated spectra of the solar irradiance at the ground level, in the region of the O(2)-B absorption band. The minimization of a cost function was performed in the Fourier transform domain in order to make an accurate fit of the Instrumental Line- Shape that convoluted the simulated spectrum. Second- order polynomials were used to fit the leaf fluorescence and reflectance in the 100-cm(-1)-wide spectral window. The scale and the instrumental conversion factor were also fitted in order to obtain an accuracy that could not be attained by using the radiance measurements alone.
Istituto di Fisica Applicata, Nello Carrara del Consiglio, Nazionale delle Ricerche, via Madonna del Piano 10 , 50019 Sesto Fiorentino, Italy. M.Mazzoni@ifac.cnr.it
Marina
M
Mazzoni
Pierluigi
P
Falorni
Samuele
S
Del Bianco
D000465:Algorithms; D002734:Chlorophyll / Q000737:chemistry; D008027:Light; D049449:Luminescence; D008962:Models, Theoretical; D010100:Oxygen / Q000737:chemistry*; D018515:Plant Leaves / Q000378:metabolism*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D016082:Solar System; D013050:Spectrometry, Fluorescence / Q000379:methods; D013053:Spectrophotometry / Q000379:methods*; D013472:Sunlight
D002734:Chlorophyll; D010100:Oxygen