POLDER (POLarization and Directionality of the Earth's Reflectances) is a passive optical imaging radiometer and polarimeter instrument developed by the French space agency CNES.
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POLDER in the context of PARASOL
PARASOL (Polarization & Anisotropy of Reflectances for Atmospheric Sciences coupled with Observations from a Lidar) was a French-built Earth observing research satellite. It carried an instrument called POLDER, which studied the radiative and microphysical properties of clouds and aerosols.
PARASOL was launched from the French spaceport in Kourou, French Guiana on December 18, 2004, by an Ariane 5 G+.
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