Publication Abstracts

Rye et al. 2020

Rye, C.D., J. Marshall, M. Kelley, G. Russell, L.S. Nazarenko, Y. Kostov, G.A. Schmidt, and J. Hansen, 2020: Antarctic glacial melt as a driver of recent Southern Ocean climate trends. Geophys. Res. Lett., 47, no. 11, e2019GL086892, doi:10.1029/2019GL086892.

Recent trends in Southern Ocean (SO) climate — of surface cooling, freshening and sea-ice expansion — are not captured in historical climate simulations. Here we demonstrate that the addition of a plausible increase in Antarctic meltwater to a coupled climate model can produce a closer match to a wide range of climate trends. We use an ensemble of simulations of the Goddard Institute for Space Studies Earth System Model to compute "Climate Response Functions" (CRFs) for the addition of meltwater. These imply a cooling and freshening of the SO, an expansion of sea ice and an increase in steric height, all consistent with observations since 1992. The CRF framework allows one to compare the efficacy of Antarctic meltwater as a driver of SO climate trends, relative to greenhouse gas and surface wind forcing. The meltwater CRFs presented here strongly suggest that interactive Antarctic ice melt should be included in climate models.

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BibTeX Citation

  author={Rye, C. D. and Marshall, J. and Kelley, M. and Russell, G. and Nazarenko, L. S. and Kostov, Y. and Schmidt, G. A. and Hansen, J.},
  title={Antarctic glacial melt as a driver of recent Southern Ocean climate trends},
  journal={Geophys. Res. Lett.},

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RIS Citation

ID  - ry03000d
AU  - Rye, C. D.
AU  - Marshall, J.
AU  - Kelley, M.
AU  - Russell, G.
AU  - Nazarenko, L. S.
AU  - Kostov, Y.
AU  - Schmidt, G. A.
AU  - Hansen, J.
PY  - 2020
TI  - Antarctic glacial melt as a driver of recent Southern Ocean climate trends
JA  - Geophys. Res. Lett.
VL  - 47
IS  - 11
SP  - e2019GL086892
DO  - 10.1029/2019GL086892
ER  -

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