Skip to main content

Advertisement

Log in

Projected precipitation changes over China for global warming levels at 1.5 °C and 2 °C in an ensemble of regional climate simulations: impact of bias correction methods

  • Published:
Climatic Change Aims and scope Submit manuscript

Abstract

Four bias correction methods, i.e., gamma cumulative distribution function (GamCDF), quantile–quantile adjustment (QQadj), equidistant cumulative probability distribution function (CDF) matching (EDCDF), and transform CDF (CDF-t), to read are applied to five daily precipitation datasets over China produced by LMDZ4-regional that was nested into five global climate models (GCMs), BCC-CSM1-1m, CNRM-CM5, FGOALS-g2, IPSL-CM5A-MR, and MPI-ESM-MR, respectively. A unified mathematical framework can be used to define the four bias correction methods, which helps understanding their natures and essences for identifying the most reliable probability distributions of projected climate. CDF-t is shown to be the best bias correction method based on a comprehensive evaluation of different precipitation indices. Future precipitation projections corresponding to the global warming levels of 1.5 °C and 2 °C under RCP8.5 were obtained using the bias correction methods. The multi-method and multi-model ensemble characteristics allow to explore the spreading of projections, considered a surrogate of climate projection uncertainty, and to attribute such uncertainties to different sources. It was found that the spread among bias correction methods is smaller than that among dynamical downscaling simulations. The four bias correction methods, with CDF-t at the top, all reduce the spread among the downscaled results. Future projection using CDF-t is thus considered having higher credibility.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

Data availability

The interpolated 0.5° × 0.5° daily precipitation datasets are available from the URL (http://rcg.gvc.gu.se/). The LMDZ4 datasets are available from the NEC-SX5 of the IDRIS/CNRS computer center.

References

Download references

Acknowledgments

We thank the editor and three anonymous reviewers for their constructive comments.

Funding

This study was supported by the National Key Research and Development Program of China (2017YFA0603804, 2018YFC1507704), the Postgraduate Research and Practice Innovation Program of Government of Jiangsu Province (SJKY19_0930), and the Visiting Fellowship from China Scholarship Council (NO. 201908320544). L. Li acknowledges the support of French ANR (Project China-Trend-Stream). D. Chen is supported by the Swedish STINT and MERGE.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Zhihong Jiang.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

ESM 1

(DOCX 5058 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Guo, L., Jiang, Z., Chen, D. et al. Projected precipitation changes over China for global warming levels at 1.5 °C and 2 °C in an ensemble of regional climate simulations: impact of bias correction methods. Climatic Change 162, 623–643 (2020). https://doi.org/10.1007/s10584-020-02841-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10584-020-02841-z

Keywords

Navigation