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Evidence of Abrupt Transitions Between Sea Ice Dynamical Regimes in the East Greenland Marginal Ice Zone

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2023gl103558· OSTI ID:1993342
Sea ice modulates the energy exchange between the atmosphere and the ocean through its kinematics. Marginal ice zone (MIZ) dynamics are complex and are not well resolved in routine observations. Here, we investigate sea ice dynamics in the Greenland Sea MIZ using in situ and remote sensing Lagrangian drift datasets. These datasets provide a unique view into ice dynamics spanning spatial scales. We find evidence of tidal currents strongly affecting sub-daily ice motion. Velocity anomalies show abrupt transitions aligned with gradients in seafloor topography, indicating changes in ocean currents. Remote-sensed ice floe trajectories derived from moderate resolution satellite imagery provide a view of small-scale variability across the Greenland continental shelf. Ice floe trajectories reveal a west-east increasing velocity gradient imposed by the East Greenland Current, with maximum velocities aligned along the continental shelf edge. These results highlight the importance of small scale ocean variability for ice dynamics in the MIZ.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
National Aeronautics and Space Administration; Office of Naval Research; U.S. National Science Foundation; USDOE
OSTI ID:
1993342
Alternate ID(s):
OSTI ID: 1993750
OSTI ID: 1995323
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 15 Vol. 50; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (48)

Accuracy assessment of global barotropic ocean tide models journal August 2014
Thin ice and storms: Sea ice deformation from buoy arrays deployed during N-ICE2015: THIN ICE AND STORMS journal June 2017
Variability and trends in the Arctic Sea ice cover: Results from different techniques: TRENDS IN THE ARCTIC SEA ICE COVER journal August 2017
The ERA5 global reanalysis journal June 2020
The Drift of Sea Ice book January 2011
Tidal dissipation from free drift sea ice in the Barents Sea assessed using GNSS beacon observations journal July 2022
On the velocity field of the East Greenland Current journal August 1988
Tidal forcing on sea-ice drift and deformation in the western Weddell Sea in early austral summer, 2004 journal April 2008
Increased maritime traffic in the Arctic: Implications for governance of Arctic sea routes journal September 2021
Incorporating tides and internal gravity waves within global ocean general circulation models: A review journal August 2022
Ice Floe Tracker: An algorithm to automatically retrieve Lagrangian trajectories via feature matching from moderate-resolution visual imagery journal December 2019
Corrigendum: Spatial and temporal characterisation of sea-ice deformation journal March 2018
A barotropic inverse tidal model for the Arctic Ocean: BAROTROPIC INVERSE TIDAL MODEL journal January 2004
A younger, thinner Arctic ice cover: Increased potential for rapid, extensive sea-ice loss journal January 2007
Observation of cyclone-induced inertial sea-ice oscillation in Fram Strait journal May 2009
Subsynoptic scale spatial variability of sea ice deformation in the western Weddell Sea during early summer journal January 2012
Intensification of Near‐Surface Currents and Shear in the Eastern Arctic Ocean journal August 2020
Diurnal tides near the Yermak Plateau journal January 1992
Barents Sea tidal and inertial motions from Argos ice buoys during the Coordinated Eastern Arctic Experiment journal January 1995
Large-scale oceanography in Fram Strait during the 1984 Marginal Ice Zone Experiment journal January 1987
Boundary layer, upper ocean, and ice observations in the Greenland Sea Marginal Ice Zone journal January 1987
Mesoscale sea ice deformation in the East Greenland marginal ice zone journal January 1987
Sea ice motion in response to geostrophic winds journal January 1982
Array programming with NumPy journal September 2020
SciPy 1.0: fundamental algorithms for scientific computing in Python journal February 2020
Sea ice drift tracks from autonomous buoys in the MOSAiC Distributed Network journal June 2023
Spinning ice floes reveal intensification of mesoscale eddies in the western Arctic Ocean journal April 2022
Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback journal October 2020
Marginal ice zone dynamics: history, definitions and research perspectives journal September 2022
Ocean Wave Interactions with Sea Ice: A Reappraisal journal January 2020
An Assessment of Global Ocean Barotropic Tide Models Using Geodetic Mission Altimetry and Surface Drifters journal January 2021
Sea Ice Motion Vector Retrievals from AMSR2 89-GHz Data: Validation Algorithm with Simultaneous Multichannel Observations journal January 2023
Temporal and Spatial Patterns of Ship Traffic in the Canadian Arctic from 1990 to 2015 + Supplementary Appendix 1: Figs. S1–S7 (See Article Tools) journal February 2018
Overview of the MOSAiC expedition journal January 2022
Sea ice drift tracks from the Distributed Network of autonomous buoys deployed during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition 2019 - 2021 dataset January 2022
ERA5 hourly data on single levels from 1940 to present dataset March 2024
Satellite remote sensing of sea-ice thickness and kinematics: a review journal January 2010
Spatial and temporal characterization of sea-ice deformation journal January 2011
Process Drivers, Inter-Model Spread, and the Path Forward: A Review of Amplified Arctic Warming journal February 2022
Tidal forcing, energetics, and mixing near the Yermak Plateau journal March 2015
Does the East Greenland Current exist in the northern Fram Strait? journal September 2018
Fram Strait sea ice export variability and September Arctic sea ice extent over the last 80 years journal January 2017
An enhancement to sea ice motion and age products at the National Snow and Ice Data Center (NSIDC) journal May 2020
Brief Communication: Mesoscale and submesoscale dynamics in the marginal ice zone from sequential synthetic aperture radar observations journal September 2020
A new state-dependent parameterization for the free drift of sea ice journal February 2022
Sea ice inertial oscillations in the Arctic Basin journal January 2012
MOSAiC Extended Acknowledgement other January 2021
xarray: N-D labeled Arrays and Datasets in Python journal April 2017

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