NSIDC Cryosphere Seminar

Gina Jozef to discuss: Taking Part in the MOSAiC Expedition, and What We Have Learned About the Central Arctic Atmosphere and Sea Ice
Abstract: The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition was the largest polar expedition in history, which was carried out with the goal of gaining fundamental insights about the central Arctic as the epicenter of global warming, to better understand global climate change. MOSAiC was based out of the icebreaker RV Polarstern, which was frozen into the Arctic sea ice near the North Pole and set to passively drift for an entire year from September 2019 through October 2020. During legs 3 and 4 of MOSAiC (March – August 2020), our team deployed uncrewed aircraft systems (UAS) to take measurements of the Arctic atmosphere and sea ice. The HELiX, a hexacopter equipped with up- and downward looking pyranometers and a multispectral camera, recorded measurements which give insight into the differing albedo of various sea ice features, and the evolution of melt ponds through summertime. The DataHawk2, a fixed-wing UAS equipped with various meteorological sensors, recorded measurements which reveal key thermodynamic and kinematic processes dictating the atmospheric boundary layer. Additional measurement platforms, including the radiosondes, meteorological tower, ceilometer, and radiation station, allow us to gain a holistic understanding of important atmospheric processes in central Arctic using a self-organizing map analysis.
In this talk, we give an overview of MOSAiC and share what it was like to take part in the expedition, getting to know the central Arctic firsthand, while learning about the wonders and difficulties of remote field work. Additionally, an overview of the MOSAiC UAS operations, and the resulting data products and analyses will be given. Lastly, we discuss on the benefits of self-organizing maps to reduce large datasets into meaningful patterns, using the atmospheric boundary layer during MOSAiC as an example.
 
Gina Jozef – PhD Candidate, ATOC/CIRES/NSIDC 
Gina Jozef is a fourth year PhD student in the department of Atmospheric and Oceanic Sciences (ATOC) at the University of Colorado Boulder, studying boundary layer meteorology of the central Arctic using data from the MOSAiC expedition. On MOSAiC, Gina operated uncrewed aircraft, also known as drones, to collect meteorological measurements of the lower atmosphere. Prior to joining ATOC at CU, Gina completed her Bachelor of Arts degree in Environmental Science with a concentration in Physics at Colorado College, where she studied dynamics of the Ross Ice Shelf. This December, Gina plans to embark on her next polar journey, again deploying uncrewed aircraft, but this time in Antarctica at the Siple Dome field camp. 
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Meeting ID: 540 961 8610
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