Airborne Observations of Summer Thinning of Multiyear Sea Ice Originating From the Lincoln Sea.

ABSTRACT: To better understand recent changes of Arctic sea ice thickness and extent, it is important to distinguish between the contributions of winter growth and summer melt to the sea ice mass balance. In this study we present a Lagrangian approach to quantify summer sea ice melt in which multiyear ice (MYI) floes that were surveyed by airborne electromagnetic thickness sounding within Nares Strait during summer were backtracked, using satellite imagery, to a region in close proximity (3-20 km) to spring ice thickness surveys carried out in the Lincoln Sea. Typical modal total MYI thicknesses, including ~0.4-m snow, ranged between 3.9 and 4.7 m in the Lincoln Sea during April. Ice-only modal thicknesses were between 2.2 and 3.0 m in Nares Strait during August. Total thinning including snow and ic

SUBMITTER: Lange BA 

PROVIDER: S-EPMC6472558 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature