Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 7
Articles | Volume 18, issue 7
https://doi.org/10.5194/essd-18-5259-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-5259-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 7
Data description article
 | 
22 Jul 2026
Data description article |  | 22 Jul 2026

SEAS5-BCSD: a bias-corrected and downscaled global seasonal forecast reference dataset for 1981–2024

Jan N. Weber, Christof Lorenz, Tanja C. Schober, Rebecca Wiegels, and Harald Kunstmann

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Short summary
Seasonal forecasts can support drought preparedness but are often limited by systematic biases. We present a global Bias-Corrected and Spatially Disaggregated (BCSD) reference dataset based on the European Centre for Medium-Range Weather Forecasts (ECMWF) Seasonal Forecasting System 5 (SEAS5) and observational data. It provides 0.25° global land forecasts from 1981 onward for improved drought and climate-impact applications and is openly available via the World Data Center for Climate.
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