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Sandia scientists develop computer tools to study inadvertent marine cloud brightening.

Two KTH students have completed a master's thesis comparing the carbon footprint of electric hydrofoil ferries to that of traditional diesel ferries. The study shows that the hydrofoil ferries emit 97.5% less carbon dioxide during their life cycle than diesel-powered ones.

In last year's Arctic Report Card, experts provided indirect evidence that ship traffic is increasing in the Arctic: record amounts of foreign trash and marine debris like abandoned fishing gear are washing up in BERING Sea communities, and the underwater soundscape is getting louder. An essay in the 2022 Arctic Report Card reports direct evidence that ship traffic is increasing as sea ice dwindles-not just in near-shore, territorial waters of Arctic coastal countries, but increasingly, in the high seas of the Central Arctic Ocean.

Antarctica is experiencing rapid and complex change, and it is critical to have a better understanding of these changes for the region's ocean ecosystems. The costs and logistical challenges to operate scientific research vessels prohibits the scaling of crucial science and discovery in the region. Yet, the tourism industry in Antarctica is growing rapidly, and collaboration between tourism companies and researchers provides important access to the region. While researchers gain from free or discounted ship time, it also provides the travel companies with enrichment opportunities for their guests. Scientists have been conducting research aboard platforms of opportunity (POMs) like tourism or cargo ships for decades, studying oceanographic conditions as well as organisms from phytoplankton to marine mammals, with some of the earliest published research using data collected aboard cruise ships headed to Antarctica. As the number of Antarctic tourism vessels has increased to over 70 boats, more research and citizen science projects are successfully expanding to take advantage of these POMs in Antarctica.