Quantifying overlapping and differing information of global precipitation for GCM forecasts and El Niño–Southern Oscillation

Zhao, Tongtiegang; Chen, Haoling; Tian, Yu; Yan, Denghua; Xu, Weixin; Cai, Huayang; Wang, Jiabiao; Chen, Xiaohong

doi:https://doi.org/10.5194/hess-26-4233-2022

Articles | Volume 26, issue 16

Hydrol. Earth Syst. Sci., 26, 4233–4249, 2022

https://doi.org/10.5194/hess-26-4233-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Hydrol. Earth Syst. Sci., 26, 4233–4249, 2022

https://doi.org/10.5194/hess-26-4233-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 16

Research article

17 Aug 2022

Research article | 17 Aug 2022

Quantifying overlapping and differing information of global precipitation for GCM forecasts and El Niño–Southern Oscillation

Tongtiegang Zhao et al.

Supplement

https://doi.org/10.5194/hess-26-4233-2022-supplement

Data sets

Forecast and observation datasets IRI Data Library https://iridl.ldeo.columbia.edu/SOURCES/.Models/.NMME/

Niño3.4 index Climate Prediction Center https://www.cpc.ncep.noaa.gov/data/indices/

Short summary

This paper develops a novel set operations of coefficients of determination (SOCD) method to explicitly quantify the overlapping and differing information for GCM forecasts and ENSO teleconnection. Specifically, the intersection operation of the coefficient of determination derives the overlapping information for GCM forecasts and the Niño3.4 index, and then the difference operation determines the differing information in GCM forecasts (Niño3.4 index) from the Niño3.4 index (GCM forecasts).