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Greater probability of extreme precipitation under 1.5 °C and 2 °C warming limits over East-Central Asia

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A Correction to this article was published on 14 July 2020

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Abstract

East-Central Asia is one of the most vulnerable and sensitive regions to climate change, and the variability of extreme precipitation attracts great attention due to the large population and the importance of its economy. Here, three special runs with the Community Earth System Model (CESM) are used to project the changes in representative extreme precipitation indices (Rx1day, Rx5day, R95p, SDII) over East-Central Asia under the 1.5 °C and 2 °C Paris Agreement limits. The results indicate that Rx1day and Rx5day will increase by 28% and 15%, respectively, under the 1.5 °C warming level relative to the historical period (1971–2000). Most areas over East-Central Asia are projected to experience an accelerated increase in response to a further 0.5 °C warming. Specifically, humid areas (HAs) are projected to experience a greater increase in R95p annual days and area fraction, whereas arid and semiarid areas (ASAs) may have threefold higher risks. The proportion of extreme precipitation in total will increase ~10% in most HAs in response to the 0.5 °C additional warming. Holding global warming at 1.5 °C instead of 2 °C reduces the occurrence of R95p annual days by ~3 days/year in humid areas and ~1 day/year in ASAs. For SDII, most HAs will experience 0.2–0.6 mm/day and 0.2–0.4 mm/day increases in 1.5 °C or 2 °C warming limits, especially in Southeast China and the Himalayas. Therefore, limiting global warming to under 1.5 °C is beneficial to reducing the occurrence and associated impact of precipitation extremes in East-Central Asia.

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  • 14 July 2020

    The original article has been corrected. During proof correction, the author supplied new images that were unfortunately not included.

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Acknowledgements

This work was jointly supported by the National Natural Science Foundation of China (41705077 and 41630426) and the National Key Research and Development Program of China (2017YFC1502305). ADK was funded by the Australian Research Council (DE180100638). The authors acknowledge the NCAR for releasing the CESM low-warming experiment products and the data were acquired from http://www.cesm.ucar.edu/experiments/1.5-2.0-targets.html. The authors thank the two anonymous reviewers for their valuable suggestions.

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Correspondence to Haipeng Yu.

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The original version of this article was revised: During proof correction, the author supplied new images that were unfortunately not included.

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Zhang, M., Yu, H., King, A.D. et al. Greater probability of extreme precipitation under 1.5 °C and 2 °C warming limits over East-Central Asia. Climatic Change 162, 603–619 (2020). https://doi.org/10.1007/s10584-020-02725-2

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  • DOI: https://doi.org/10.1007/s10584-020-02725-2

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