Articles written in Journal of Earth System Science
Volume 130 All articles Published: 19 February 2021 Article ID 0047 Research article
In this study, monthly S2S reforecast for 20 years obtained from the European Centre for Medium-Range Weather Forecast (ECMWF) were evaluated against the
$\bullet$ Monthly S2S reforecast for 20 years obtained from the European Centre for Medium-Range Weather Forecast (ECMWF) were evaluated against the in-situ rainfall data over Zambia using 1-month lead time forecast.
$\bullet$ The two datasets agree with the rainfall pattern throughout the year thereby, the S2S ECMWF realistically simulates the mean annual cycle skillfully by identifying the wet season from November to March (NDJFM), and the driest season as June to September (JJAS), in agreement with the observations.
$\bullet$ The S2S ECMWF exhibits a better performance during wet months compared to dry months though depicted a slight wet bias in estimating the observed variation during the wet season.
$\bullet$ The lowest spatial average value of RMSE and MAE during the wet season (NDJFM) was observed in March while the highest RMSE and MAE were recorded in December.
$\bullet$ The CRPSS in most of the stations during the wet season (NDJFM) had positive values, while during dry months the results show most of the stations having negative CRPSS values.
Volume 131, 2022
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