Check out my interview with NSF’s Frank Rack, and Scripp’s Jeff Bowman, and we’ll answer questions about MOSAiC. Nearly a dozen American researchers have returned from the largest Polar expedition in history where they took the closest look ever at the Arctic as the epicenter of global warming. The researchers spent months aboard the RV Polarstern icebreaker, one of the most advanced and versatile polar research ships worldwide, studying the physical, chemical, and biological processes that couple the Arctic atmosphere, sea ice, ocean, and ecosystem. The icebreaker is frozen into Arctic sea ice and drifting with it for a full year, allowing scientists to collect data in every season.   Onboard and out on the ice, the scientists are deploying a network of instruments and measurements to capture information about how processes change across space. Coordinated activities from land-based stations, aircraft, additional ships, and satellites will support the expedition. Ultimately, measurements and analyses from this global mission will help scientists improve models and forecasts of local, regional, and global weather and climate. Check it out…