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October 9, 2025Remote SensingOpen Access

Impact of Assimilating Doppler Radar Data on Short-Term Numerical Weather Forecasting at Different Spatial Scales

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Radar data assimilation significantly improves hourly precipitation forecasts during heavy rainfall events, enhancing accuracy.
Improvements in mesoscale systems are pronounced within the first 2 h of the forecast, showing rapid diminishment thereafter.
Large-scale systems exhibit greater stability and predictability, revealing a smaller but positive impact from radar assimilation.
The findings underscore the critical role of radar data assimilation in enhancing short-term forecasts across varying spatial scales.

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This analysis shows improved precipitation predictions in Southern China using radar data assimilation, highlighting mesoscale impacts.

Luo et al. (2025) studied this question.

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