Assessment of progress and status of data assimilation in numerical weather prediction

The International Workshop on Real-Time NWP Forecast System was hosted by the Korea Institute of Atmospheric Prediction Systems (KIAPS). The workshop focused on facilitating the advancement of operational data assimilation (DA) systems to improve real-time weather prediction, such as cutting-edge DA methodologies, the impact of observations in the operational numerical weather prediction (NWP) systems, and future directions of operational DA. Experts from various international operational centers were invited to share experi­ences in DA and to discuss how to further improve forecast performance. The workshop included 32 oral and 23 poster presentations, which covered the current status of real-time NWP, hybrid DA, satellite and radar DA, and ensemble DA, and the observation impact on overall forecast performance.