Calibration and validation activities for high-spectral resolution Earth Observation satellite missions.

Cogliati S., Celesti M., Cesana I., Tagliabue G., Rossini M., Panigada C., Schuettemeyer D., Drusch M., Rascher U., Giardino C., Colombo R.

IV - Geofisica e fisica dell'ambiente
GSSI Ex ISEF - Aula D - Venerdì 27 h 09:00 - 12:00
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The quantitative characterization of the Earth's surface radiation in the solar domain is a key element for the calibration/validation of space-borne imaging spectrometers and derived geophysical variables. Novel automatic high-resolution VNIR (400--1000 nm) field spectroradiometers were developed enabling temporally resolved measurements applicable to diverse Earth targets (vegetation, glaciers, water bodies). These measurements together with spatially distributed observations from airborne spectrometers are integrated within upscaling schemes to simulate top-of-atmosphere radiance. Activities in preparation for the FLEX mission ($8^{\circ}$ ESA's Earth Explorer) represent a challenge since the high-spectral resolution (0.3 nm) required to disentangle reflected vegetation and fluorescence from atmospheric $O_2$ bands (and solar Fraunhofer lines).

Società Italiana di Fisica - Via Saragozza 12 40123 Bologna P.IVA 00308310374 | credits