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Surface albedo regulates aerosol direct climate effect

Author

Listed:
  • Annan Chen

    (Peking University)

  • Chuanfeng Zhao

    (Peking University
    Peking University)

  • Haotian Zhang

    (Peking University)

  • Yikun Yang

    (Peking University)

  • Jiefeng Li

    (Peking University)

Abstract

Aerosols and Surface Albedo (SA) are critical in balancing Earth’s energy budget. With the changes of surface types and corresponding SA in recent years, an intriguing yet unresolved question emerges: how does Aerosol Direct Radiative Effect (ADRE) and its warming effect (AWE) change with varying SA? Here we investigate the critical SA marking ADRE shift from negative to positive under varying aerosol properties, along with the impact of SA on the ADRE. Results show that AWE often occurs in mid-high latitudes or regions with high-absorptivity aerosols, with critical SA ranging from 0.18 to 0.96. Thinner and/or more absorptive aerosols more readily cause AWE statistically. In regions where the SA trend is significant, SA has decreased at −0.012/decade, causing a −0.2 ± 0.17 W/m²/decade ADRE change, with the most pronounced changes in the Northern Hemisphere during June-July. As SA declines, we highlight enhanced ADRE cooling or reduced AWE, indicating aerosols’ stronger cooling, partly countering the energy rise from SA reduction.

Suggested Citation

  • Annan Chen & Chuanfeng Zhao & Haotian Zhang & Yikun Yang & Jiefeng Li, 2024. "Surface albedo regulates aerosol direct climate effect," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52255-z
    DOI: 10.1038/s41467-024-52255-z
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    References listed on IDEAS

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    1. Julia Schmale & Paul Zieger & Annica M. L. Ekman, 2021. "Aerosols in current and future Arctic climate," Nature Climate Change, Nature, vol. 11(2), pages 95-105, February.
    2. Zutao Ouyang & Pietro Sciusco & Tong Jiao & Sarah Feron & Cheyenne Lei & Fei Li & Ranjeet John & Peilei Fan & Xia Li & Christopher A. Williams & Guangzhao Chen & Chenghao Wang & Jiquan Chen, 2022. "Albedo changes caused by future urbanization contribute to global warming," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    3. Timothy J. Garrett & Chuanfeng Zhao, 2006. "Increased Arctic cloud longwave emissivity associated with pollution from mid-latitudes," Nature, Nature, vol. 440(7085), pages 787-789, April.
    4. Havala O. T. Pye & Cavin K. Ward-Caviness & Ben N. Murphy & K. Wyat Appel & Karl M. Seltzer, 2021. "Secondary organic aerosol association with cardiorespiratory disease mortality in the United States," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
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