Impacts of Antarctic ice mass loss on New Zealand climate

Pauling, Andrew G., Smith, Inga J., Ridley, Jeff K., Martin, Torge, Thomas, Max and Stevens, David P. (2025) Impacts of Antarctic ice mass loss on New Zealand climate. Geophysical Research Letters, 52 (4). ISSN 0094-8276

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Abstract

We investigate the impacts of meltwater from Antarctic Ice Sheet (AIS) mass loss on New Zealand climate in a state-of-the-art global climate model. We conduct simulations with additional meltwater from AIS mass loss for both the historical period and a high-emissions future scenario. The ocean surface to the southeast of New Zealand cools, with the largest change in winter and spring. The additional meltwater results in a northward shift of the oceanic sub-tropical front near New Zealand, which partially offsets the projected southward shift of this front in a warming climate. Wintertime surface westerly winds to the south of New Zealand also increase with the addition of the meltwater. The magnitude of the impact of Antarctic meltwater is uncertain due to the wide spread in estimates of Antarctic mass imbalance, but has important implications for future projections for New Zealand climate.

Item Type:	Article
Additional Information:	Data Availability Statement: CMIP6 data used in this study is available from the Earth System Grid Federation (ESGF) archive: https://aims2.llnl.gov/search/cmip6. The SOFIA model output data are available at https://crd-data-donnees-rdc.ec.gc.ca/CCCMA/SOFIA (Swart et al., 2023). Code and processed data necessary to reproduce the results of this study are archived at Pauling (2024a, 2024b) respectively. Funding information: AGP, IJS, and MT were funded by the Deep South National Science Challenge (MBIE contract number C01X1412). AGP, IJS, and MT acknowledge additional support from the Antarctic Science Platform (University of Otago subcontract 19424 from VUW's ASP Project 4 contract with Antarctica New Zealand through MBIE SSIF Programmes Investment contract number ANTA1801). JR was supported by the Met Office Hadley Centre Climate Programme funded by DBEIS and Defra.
Uncontrolled Keywords:	sdg 13 - climate action ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School:	Faculty of Science > School of Engineering, Mathematics and Physics University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Numerical Simulation, Statistics & Data Science Faculty of Science > Research Groups > Fluids & Structures Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Related URLs:	https://agupubs.onlinelibrary.wiley.com/...
Depositing User:	LivePure Connector
Date Deposited:	14 Feb 2025 15:30
Last Modified:	18 Feb 2025 01:21
URI:	https://ueaeprints.uea.ac.uk/id/eprint/98503
DOI:	10.1029/2024GL111047

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