The Cryosphere
The Cryosphere
TC
Articles | Volume 18, issue 4
Articles | Volume 18, issue 4
https://doi.org/10.5194/tc-18-1709-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-1709-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 4
Research article
 | 
10 Apr 2024
Research article |  | 10 Apr 2024

Triggers of the 2022 Larsen B multi-year landfast sea ice breakout and initial glacier response

Naomi E. Ochwat, Ted A. Scambos, Alison F. Banwell, Robert S. Anderson, Michelle L. Maclennan, Ghislain Picard, Julia A. Shates, Sebastian Marinsek, Liliana Margonari, Martin Truffer, and Erin C. Pettit

Supplement

https://doi.org/10.5194/tc-18-1709-2024-supplement

Data sets

ATLAS/ICESat-2 L3A Land Ice Height, Version 6 B. Smith et al. https://doi.org/10.5067/ATLAS/ATL06.006

WorldView, Earth Observing System Data and Information System (EOSDIS), Version 4.30.0 NASA https://worldview.earthdata.nasa.gov

CAWCR Wave Hindcast - Aggregated Collection. v5 Thomas Durrant et al. http://hdl.handle.net/102.100.100/137152?index=1

Snow status (wet/dry) in Antarctica from AMSR-E and AMSR2 passive microwave radiometers 2002 – 2023 Ghislain Picard https://doi.org/10.18709/perscido.2023.04.ds391

Quantarctica, an integrated mapping environment for Antarctica, the Southern Ocean, and sub-Antarctic islands (https://www.npolar.no/quantarctica/) K. Matsuoka et al. https://doi.org/10.1016/j.envsoft.2021.105015

Sea ice remote sensing using AMSR-E 89 GHz channels (https://seaice.uni-bremen.de/sea-ice-concentration/amsre-amsr2) G. Spreen et al. https://doi.org/10.1029/2005JC003384

ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47

Pre-IceBridge ATM L1B Qfit Elevation and Return Strength, Version 1 M. Studinger https://doi.org/10.5067/8Q93SAT2LG3Q

Model code and software

Hybrid Pluggable Processing Pipeline (HyP3): A cloud-native infrastructure for generic processing of SAR data K. Hogenson et al. https://doi.org/10.5281/zenodo.4646138

Video supplement

NASA MODIS imagery time series Naomi Ochwat https://doi.org/10.5446/66845

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Short summary
On the Antarctic Peninsula, there is a small bay that had sea ice fastened to the shoreline (fast ice) for over a decade. The fast ice stabilized the glaciers that fed into the ocean. In January 2022, the fast ice broke away. Using satellite data we found that this was because of low sea ice concentrations and a high long-period ocean wave swell. We find that the glaciers have responded to this event by thinning, speeding up, and retreating by breaking off lots of icebergs at remarkable rates.
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