Radiative forcing from the 2020 shipping fuel regulation is large but hard to detect DOI Creative Commons
Jianhao Zhang,

Yao‐Sheng Chen,

Edward Gryspeerdt

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: Jan. 13, 2025

Abstract Reduction in aerosol cooling unmasks greenhouse gas warming, exacerbating the rate of future warming. The strict sulfur regulation on shipping fuel implemented 2020 (IMO2020) presents an opportunity to assess potential impacts such emission regulations and detectability deliberate perturbations for climate intervention. Here we employ machine learning capture cloud natural variability estimate a radiative forcing +0.074 ±0.005 W m −2 related IMO2020 associated with changes shortwave effect over three low-cloud regions where routes prevail. We find low this event, attributed strong albedo cover. Regionally, is higher southeastern Atlantic stratocumulus deck. These results raise concerns that reductions emissions will accelerate warming proposed as marine brightening need be substantial order overcome detectability.

Language: Английский

Radiative forcing from the 2020 shipping fuel regulation is large but hard to detect DOI Creative Commons
Jianhao Zhang,

Yao‐Sheng Chen,

Edward Gryspeerdt

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: Jan. 13, 2025

Abstract Reduction in aerosol cooling unmasks greenhouse gas warming, exacerbating the rate of future warming. The strict sulfur regulation on shipping fuel implemented 2020 (IMO2020) presents an opportunity to assess potential impacts such emission regulations and detectability deliberate perturbations for climate intervention. Here we employ machine learning capture cloud natural variability estimate a radiative forcing +0.074 ±0.005 W m −2 related IMO2020 associated with changes shortwave effect over three low-cloud regions where routes prevail. We find low this event, attributed strong albedo cover. Regionally, is higher southeastern Atlantic stratocumulus deck. These results raise concerns that reductions emissions will accelerate warming proposed as marine brightening need be substantial order overcome detectability.

Language: Английский

Citations

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