Polarized Submillimeter Ice-cloud Radiometer
From Spacefaring
The Polarized Submillimeter Ice-cloud Radiometer (PolSIR) is a NASA space mission consisting of two 16U CubeSats flying in low Earth orbit, expected to launch in 2028. This mission intends to measure characteristics of ice clouds in tropical and subtropical regions to improve understanding of Earth's dynamic atmosphere. This mission follows the previous successful NASA CubeSat mission also studying ice clouds with radiometry, IceCube.