1. Ha, S.-Y. and Y.-H. Kuo, 2003: Assimilation of GPS slant wet delay: Impact of observing network design. Proceedings of International Workshop on GPS Meteorology. —GPS Meteorology: Ground-Based and Space Borne Applications—.
2. The statistical structure of short-range forecast errors as determined from radiosonde data. Part I: The wind field
3. Ishikawa, Y., 2001: Development of a mesoscale 4- dimensional variational data assimilation (4DVar) system at JMA. Proceedings of the 81st Annual Meeting of AMS: Precipitation Extremes: Prediction, Impacts, and Responses, P2.45.
4. Koizumi, K., 2001: The four-dimensional data assimilation system for the JMA mesoscale model. Proceedings of the 14th Conference on Numerical Weather Prediction, J96-J98.