Publication Abstracts

Watanabe et al. 2013

Watanabe, M., Y. Kamae, M. Yoshimori, A. Oka, M. Sato, M. Ishii, T. Mochizuki, and M. Kimoto, 2013: Strengthening of ocean heat uptake efficiency associated with the recent climate hiatus. Geophys. Res. Lett., 40, 3175-3179, doi:10.1002/grl.50541.

The rate of increase of global-mean surface air temperature (SATg) has apparently slowed during the last decade. We investigated the extent to which state-of-the-art general circulation models (GCMs) can capture this hiatus period by using multimodel ensembles of historical climate simulations. While the SATg linear trend for the last decade is not captured by their ensemble means regardless of differences in model generation and external forcing, it is barely represented by an 11-member ensemble of a GCM, suggesting an internal origin of the hiatus associated with active heat uptake by the oceans. Besides, we found opposite changes in ocean heat uptake efficiency (κ), weakening in models and strengthening in nature, which explain why the models tend to overestimate the SATg trend. The weakening of κ commonly found in GCMs seems to be an inevitable response of the climate system to global warming, suggesting the recovery from hiatus in coming decades.

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BibTeX Citation

@article{wa06400o,
  author={Watanabe, M. and Kamae, Y. and Yoshimori, M. and Oka, A. and Sato, M. and Ishii, M. and Mochizuki, T. and Kimoto, M.},
  title={Strengthening of ocean heat uptake efficiency associated with the recent climate hiatus},
  year={2013},
  journal={Geophys. Res. Lett.},
  volume={40},
  pages={3175--3179},
  doi={10.1002/grl.50541},
}

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RIS Citation

TY  - JOUR
ID  - wa06400o
AU  - Watanabe, M.
AU  - Kamae, Y.
AU  - Yoshimori, M.
AU  - Oka, A.
AU  - Sato, M.
AU  - Ishii, M.
AU  - Mochizuki, T.
AU  - Kimoto, M.
PY  - 2013
TI  - Strengthening of ocean heat uptake efficiency associated with the recent climate hiatus
JA  - Geophys. Res. Lett.
VL  - 40
SP  - 3175
EP  - 3179
DO  - 10.1002/grl.50541
ER  -

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