Publication Abstracts

Chen et al. 2023

Chen, J.-J., N.C. Swart, R. Beadling, X. Cheng, T. Hattermann, A. Jüling, Q. Li, J. Marshall, T. Martin, M. Muilwijk, A.G. Pauling, A. Purich, I.J. Smith, and M. Thomas, 2023: Reduced deep convection and bottom water formation due to Antarctic meltwater in a multi-model ensemble. Geophys. Res. Lett., 50, no. 24, e2023GL106492, doi:10.1029/2023GL106492.

The additional water from the Antarctic ice sheet and ice shelves due to climate-induced melt can impact ocean circulation and global climate. However, the major processes driving melt are not adequately represented in Coupled Model Intercomparison Project phase 6 (CMIP6) models. Here, we analyze a novel multi-model ensemble of CMIP6 models with consistent meltwater addition to examine the robustness of the modeled response to meltwater, which has not been possible in previous single-model studies. Antarctic meltwater addition induces a substantial weakening of open-ocean deep convection. Additionally, Antarctic Bottom Water warms, its volume contracts, and the sea surface cools. However, the magnitude of the reduction varies greatly across models, with differing anomalies correlated with their respective mean-state climatology, indicating the state-dependency of the climate response to meltwater. A better representation of the Southern Ocean mean state is necessary for narrowing the inter-model spread of response to Antarctic meltwater. %CS MAP NCCS

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BibTeX Citation

@article{ch05610j,
  author={Chen, J.-J. and Swart, N. C. and Beadling, R. and Cheng, X. and Hattermann, T. and Jüling, A. and Li, Q. and Marshall, J. and Martin, T. and Muilwijk, M. and Pauling, A. G. and Purich, A. and Smith, I. J. and Thomas, M.},
  title={Reduced deep convection and bottom water formation due to Antarctic meltwater in a multi-model ensemble},
  year={2023},
  journal={Geophysical Research Letters},
  volume={50},
  number={24},
  pages={e2023GL106492},
  doi={10.1029/2023GL106492},
}

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RIS Citation

TY  - JOUR
ID  - ch05610j
AU  - Chen, J.-J.
AU  - Swart, N. C.
AU  - Beadling, R.
AU  - Cheng, X.
AU  - Hattermann, T.
AU  - Jüling, A.
AU  - Li, Q.
AU  - Marshall, J.
AU  - Martin, T.
AU  - Muilwijk, M.
AU  - Pauling, A. G.
AU  - Purich, A.
AU  - Smith, I. J.
AU  - Thomas, M.
PY  - 2023
TI  - Reduced deep convection and bottom water formation due to Antarctic meltwater in a multi-model ensemble
JA  - Geophys. Res. Lett.
JO  - Geophysical Research Letters
VL  - 50
IS  - 24
SP  - e2023GL106492
DO  - 10.1029/2023GL106492
ER  -

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