Publication Abstracts

Lin et al. 2019

Lin, Y.-J., Y.-T. Hwang, P. Ceppi, and J.M. Gregory, 2019: Uncertainty in the evolution of climate feedback traced to the strength of the Atlantic Meridional Overturning Circulation. Geophys. Res. Lett., 46, no. 21, 12331-12339, doi:10.1029/2019GL083084.

In most coupled climate models, effective climate sensitivity increases for a few decades following an abrupt CO2 increase. The change in the climate feedback parameter between the first 20 years and the subsequent 130 years is highly model dependent. In this study, we suggest that the intermodel spread of changes in climate feedback can be partially traced to the evolution of the Atlantic Meridional Overturning Circulation. Models with stronger Atlantic Meridional Overturning Circulation recovery tend to project more amplified warming in the Northern Hemisphere a few decades after a quadrupling of CO2. Tropospheric stability then decreases as the Northern Hemisphere gets warmer, which leads to an increase in both the lapse-rate and shortwave cloud feedbacks. Our results suggest that constraining future ocean circulation changes will be necessary for accurate climate sensitivity projections.

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BibTeX Citation

@article{li00310a,
  author={Lin, Y.-J. and Hwang, Y.-T. and Ceppi, P. and Gregory, J. M.},
  title={Uncertainty in the evolution of climate feedback traced to the strength of the Atlantic Meridional Overturning Circulation},
  year={2019},
  journal={Geophys. Res. Lett.},
  volume={46},
  number={21},
  pages={12331--12339},
  doi={10.1029/2019GL083084},
}

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RIS Citation

TY  - JOUR
ID  - li00310a
AU  - Lin, Y.-J.
AU  - Hwang, Y.-T.
AU  - Ceppi, P.
AU  - Gregory, J. M.
PY  - 2019
TI  - Uncertainty in the evolution of climate feedback traced to the strength of the Atlantic Meridional Overturning Circulation
JA  - Geophys. Res. Lett.
VL  - 46
IS  - 21
SP  - 12331
EP  - 12339
DO  - 10.1029/2019GL083084
ER  -

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