Agnirva Space Premier League - Expedition #30939: Color and Climate: The Science Behind the HyperAngular Rainbow Polarimeter

The Earth’s atmosphere is filled with aerosols—tiny particles that can affect climate, weather, and air quality. The HyperAngular Rainbow Polarimeter (HARP) was designed to study these aerosols from space in incredible detail. Developed by a team led by Dr. Jose Vanderlei Martins at the University of Maryland, this experiment was deployed during Expedition 61/62.

HARP used multi-angle, multi-spectral polarimetry to examine how sunlight interacts with aerosols. By measuring scattered light, HARP could determine the size, shape, and composition of particles. This information helps scientists understand how aerosols influence cloud formation and global temperatures.

What made HARP unique was its wide field of view and ability to capture ‘rainbow angles,’ offering deeper insights than traditional instruments. Its findings contribute to climate modeling and help policymakers address issues like pollution and climate change.

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