Publication Abstracts
Mitevski et al. 2022
, L. Polvani, and , 2022: Asymmetric warming/cooling response to CO2 increase/decrease due to non-logarithmic forcing, not feedbacks. Geophys. Res. Lett., 49, no. 5, e2021GL097133, doi:10.1029/2021GL097133.
We explore the CO2 dependence of effective climate sensitivity (SG) with symmetric abrupt and transient CO2 forcing, spanning the range 1/8×, 1/4×, 1/2×, 2×, 4×, and 8×CO2, using two state-of-the-art fully coupled atmosphere-ocean-sea-ice-land models. In both models, under abrupt CO2 forcing, we find an asymmetric response in surface temperature and SG. The surface global warming at 8×CO2 is more than one third larger than the corresponding cooling at 1/8×CO2, and SG is CO2 dependent, increasing non-monotonically from 1/8×CO2 to 8×CO2. We find similar CO2 dependence in the transient runs, forced with -1%yr-1CO2 and +1%yr-1CO2 up to 1/8×CO2 and 8×CO2, respectively. The non-logarithmic radiative forcing — not the changing feedbacks — primarily explains the dependence of SG on CO2. The changing feedbacks, however, explain SG's non-monotonic
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BibTeX Citation
@article{mi00620a, author={Mitevski, I. and Polvani, L. and Orbe, C.}, title={Asymmetric warming/cooling response to CO2 increase/decrease due to non-logarithmic forcing, not feedbacks}, year={2022}, journal={Geophysical Research Letters}, volume={49}, number={5}, pages={e2021GL097133}, doi={10.1029/2021GL097133}, }
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RIS Citation
TY - JOUR ID - mi00620a AU - Mitevski, I. AU - Polvani, L. AU - Orbe, C. PY - 2022 TI - Asymmetric warming/cooling response to CO2 increase/decrease due to non-logarithmic forcing, not feedbacks JA - Geophys. Res. Lett. JO - Geophysical Research Letters VL - 49 IS - 5 SP - e2021GL097133 DO - 10.1029/2021GL097133 ER -
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