Janek Uin, Stephen R. Springston and Thomas B Watson, Brookhaven National Laboratory, Upton, NY, United States

Christopher Cox¹, Matthew Shupe², Ola P G Persson², Stefanie Arndt³, David Clemens-Sewall⁴, Michael Gallagher², Donald K Perovich⁵ and Chris Polashenski⁴, (1)NOAA PSL, Boulder, CO, United States, (2)CIRES/University of Colorado/NOAA PSL, Boulder, CO, United States, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (4)Dartmouth College, Thayer School of Engineering, Hanover, NH, United States, (5)USA CRREL, Hanover, NH, United States

Bonnie Light¹, Donald K Perovich², Marcel Nicolaus³, Madison Smith⁴, Melinda Webster⁵, David Clemens-Sewall², Philipp Anhaus⁶, Julia Regnery⁷, Stefanie Arndt⁸, Amy Macfarlane⁹, Ian Rafael¹⁰, Felix Linhardt¹¹, Marika M Holland¹² and Christian Katlein⁸, (1)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (2)Dartmouth College, Thayer School of Engineering, Hanover, NH, United States, (3)Alfred Wegener Institute, Bremerhaven, Germany, (4)University of Washington, Seattle, United States, (5)University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, AK, United States, (6)Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany, (7)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (8)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (9)WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland, (10)Dartmouth College, Hanover, United States, (11)Christian-Albrechts-Universität zu Kiel, Department of Geography, Kiel, Germany, (12)Natl Ctr Atmospheric Research, Boulder, CO, United States

Jennifer K Hutchings¹, Rajlaxmi Basu², Bin Cheng³, Polona Itkin⁴, Ruibo Lei⁵, Jari Juhani Haapala³, Christian Haas⁶, Mario Hoppmann⁷, Phil Byongjun Hwang⁸, Luisa von Albedyll⁹ and Daniel Watkins¹⁰, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)University of Huddersfield, Huddersfield, England, United Kingdom, (3)Finnish Meteorological Institute, Helsinki, Finland, (4)UiT The Arctic University of Norway, Tromsø, Norway, (5)Polar Research Institute of China, Shanghai, China, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (7)Alfred-Wegener-Institute, Oldenburg, Germany, (8)Scottish Association for Marine Science, Oban, United Kingdom, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, sea ice physics, Bremerhaven, Germany, (10)Oregon State University, Corvallis, OR, United States

Marc Oggier¹, Robert Rember¹, Allison A. Fong², Dorothea Bauch^3,4, Dmitry Divine⁵, Sinhue Torres-Valdes⁶, Steven Fons^7,8, Ellen Damm⁶, Hajo Eicken¹, Rolf Gradinger⁹, Mats A Granskog⁵, Knut V. Høyland^10,11, Ruibo Lei¹², Brice Loose¹³, Marcel Nicolaus⁶, Egor Shimanchuk¹⁴, Laura Wischnewski⁶ and The MOSAiC Sea-Ice Biogeochemical Coring Team, (1)University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, AK, United States, (2)Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (4)Leibniz-Labor, University of Kiel CAU, Kiel, Germany, (5)Norwegian Polar Institute, Tromsø, Norway, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (7)University of Maryland College Park, Department of Atmospheric and Oceanic Science, College Park, MD, United States, (8)NASA Goddard Space Flight Center, Greenbelt, DC, United States, (9)UiT The Arctic University of Norway, Institute of Marine Research, Tromsø, Norway, (10)Norwegian University of Science and Technology, Trondheim, Norway, (11)The University Centre in Svalbard, Longyearbyen,, Norway, (12)Polar Research Institute of China, Key Laboratory for Polar Science of the MNR, Shanghai, China, (13)University of Rhode Island, Narragansett, RI, United States, (14)Arctic and Antarctic Research Institute, St.Petersburg, Russia

Torsten Kanzow¹, Benjamin Rabe¹, Janin Schaffer², Markus A Janout¹, Ying-Chih Fang³, Ivan Kuznetsov¹, Mario Hoppmann⁴, Volker Mohrholz⁵, Sandra Tippenhauer¹, Kirstin Schulz⁶, Hailong Liu⁷, Bin Kong⁸, Natalia Sukhikh⁹, Ruibo Lei¹⁰, Ian Raphael¹¹, David Clemens-Sewall¹¹, Donald K Perovich¹², Serdar Sakinan¹³ and Bin Cheng¹⁴, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, (3)University of Alaska School of Fisheries & Ocean Science, Fairbanks, AK, United States, (4)Alfred-Wegener-Institute, Oldenburg, Germany, (5)Leibniz-Institute for Baltic Sea Research Warnemünde, Physical Oceanography and Instrumentation, Rostock-Warnemünde, Germany, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Physical Oceanography, Bremerhaven, Germany, (7)Shanghai Jiao Tong University, Shanghai, China, (8)First Institute of Oceanography, State Oceanic Administration, Qingdao, China, (9)University of Bremen, IUP/MARUM, Bremen, Germany, (10)Polar Research Institute of China, Key Laboratory for Polar Science of the MNR, Shanghai, China, (11)Dartmouth College, Thayer School of Engineering, Hanover, NH, United States, (12)USA CRREL, Hanover, NH, United States, (13)Wageningen University and Research Center, Wageningen, Netherlands, (14)Finnish Meteorological Institute, Helsinki, Finland

Ivan Kuznetsov¹, Ying-Chih Fang¹, Benjamin Rabe¹, Alexey Androsov^1,2, Mario Hoppmann¹, Volker Mohrholz³, Sandra Tippenhauer¹, Kirstin Schulz⁴, Vera Fofonova¹, Markus A Janout¹, Ilker Fer⁵, Till Baumann⁵, Timothy P Stanton⁶, Hailong Liu⁷ and Maria Mallet¹, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Shirshov Institute of Oceanology RAS, Moscow, Russia, (3)Leibniz-Institute for Baltic Sea Research Warnemünde, Physical Oceanography and Instrumentation, Rostock-Warnemünde, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Physical Oceanography, Bremerhaven, Germany, (5)Geophysical Institute, University of Bergen and Bjerknes Center for Climate Research, Bergen, Norway, (6)Naval Postgraduate School, Oceanography, Monterey, CA, United States, (7)Shanghai Jiao Tong University, Shanghai, China

Amy Solomon, NOAA Boulder, Earth Systems Research Lab, Boulder, CO, United States, Jonathan Day, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom and MOSAIC Near Real-Time Verification Team