Sea ice is at the ocean-atmosphere interface and it plays a major role in the Earth's climate system. Sea ice changes in the Arctic and Antarctic occur at large and small spatial scales, and with a wide temporal window from seconds to years. Remote sensing methods can provide data at all these scales and the range of different techniques available (e.g., microwave, visible, and infrared; active and passive; polarimetric, interferometric and hyperspectral, etc.) has made remote sensing a fundamental tool for the study of sea ice and its geophysical properties. This session aims to share recent progress made in the development and application of remote sensing techniques to study sea ice, including applications for model evaluations, process studies and interdisciplinary investigations. In particular, we encourage submissions of recent remote sensing opportunities, including CRYO2ICE, MOSAiC, the use commercial sensors, and preparation for upcoming missions, such as NISAR.