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Earlier leaf-out warms air in the north

Author

Listed:
  • Xiyan Xu

    (Institute of Atmospheric Physics, Chinese Academy of Sciences)

  • William J. Riley

    (Lawrence Berkeley National Laboratory)

  • Charles D. Koven

    (Lawrence Berkeley National Laboratory)

  • Gensuo Jia

    (Institute of Atmospheric Physics, Chinese Academy of Sciences)

  • Xiaoyan Zhang

    (Nanjing University of Information Science and Technology)

Abstract

Earlier leaf-out in response to climate warming has been recorded in northern temperate and boreal regions. In turn, this shift modifies climate by altering seasonal cycles of surface energy, water and carbon budgets. Here, we use the Community Earth System Model 1.2 to investigate climate feedbacks from advanced leaf-out in northern temperate and boreal vegetation. An imposed 12-day earlier leaf-out in this region, consistent with recent observations, enhances annual surface warming in the Northern Hemisphere. We identify warming hotspots in the Canadian Arctic Archipelago (~0.7 °C), east and west edges of Siberia (~0.4 °C) and southeastern Tibetan Plateau (~0.3 °C). We attribute this enhanced warming to combined effects of indirect water vapour, cloud and snow-albedo radiative feedbacks through intensified poleward water vapour transport rather than direct vegetation albedo and latent heat biophysical feedbacks. With continued warming, positive feedbacks between climate and leaf phenology are likely to amplify warming in the northern high latitudes.

Suggested Citation

  • Xiyan Xu & William J. Riley & Charles D. Koven & Gensuo Jia & Xiaoyan Zhang, 2020. "Earlier leaf-out warms air in the north," Nature Climate Change, Nature, vol. 10(4), pages 370-375, April.
    • Handle: RePEc:nat:natcli:v:10:y:2020:i:4:d:10.1038_s41558-020-0713-4
    DOI: 10.1038/s41558-020-0713-4
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    Cited by:

    1. Xu Lian & Sujong Jeong & Chang-Eui Park & Hao Xu & Laurent Z. X. Li & Tao Wang & Pierre Gentine & Josep Peñuelas & Shilong Piao, 2022. "Biophysical impacts of northern vegetation changes on seasonal warming patterns," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Georgeta Bandoc & Adrian Piticar & Cristian Patriche & Bogdan Roșca & Elena Dragomir, 2022. "Climate Warming-Induced Changes in Plant Phenology in the Most Important Agricultural Region of Romania," Sustainability, MDPI, vol. 14(5), pages 1-23, February.

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