Atmospheric highs drive asymmetric sea ice drift during lead opening from Point Barrow
نویسندگان
چکیده
Abstract. Throughout winter, the winds of migrating weather systems drive recurrent opening sea ice leads from Alaska's northernmost headland, Point Barrow. As extend offshore into Beaufort and Chukchi seas, they produce velocity discontinuities that are challenging to represent in models. We investigate how synoptic wind patterns form originating Barrow influence drift across Pacific Arctic. identify 135 satellite thermal infrared imagery between January–April 2000–2020 generate an ensemble lead-opening sequences by averaging atmospheric conditions events. On average, open as highs differing ice–coast interactions Northerly compress pack against coast over several days, slowing drift. west shift offshore, cover fractures a lead extends headland interior. Ice accelerates it separates coast, drifting twice fast (relative winds) east lead, which remains coastally bound. Consequently, its contribution climatological circulation becomes zonally asymmetric These findings highlight coastal boundaries modify response consolidated forcing producing spatially varying regimes stress kinematics. Observed connections winds, drift, provide test cases for models aiming capture realistic transport during these deformation
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ژورنال
عنوان ژورنال: The Cryosphere
سال: 2023
ISSN: ['1994-0424', '1994-0416']
DOI: https://doi.org/10.5194/tc-17-3229-2023