Sujeong Lim, Korea Institute of Atmospheric Prediction Systems (KIAPS)

Case study for the typhoon in the KIAPS 3DVAR system

In-Hyuk Kwon, Hyo-Jong Song, Jun Park and Ji-Hyun Ha


The Korea Institute of Atmospheric Prediction Systems (KIAPS) is a government funded non-profit research and development institute located in Seoul, South Korea. KIAPS is developing the KIAPS-Global Model, a backbone for the next-generation operational global numerical weather prediction (NWP) system. In second stage, Test Model Development (2014-2016), we have a beta version of the KIAPS Integration Model (KIM) that can produce reasonable global forecasting. This model has a cubed-sphere grid and is based on the spectral element method for horizontal spatial discretization. We also started semi-real time forecast with the 3-dimensional variational (3DVAR) data assimilation system since July, 2015. It is capable of processing the satellite radiance data (AMSU-A, IASI, AMV), GPS Radio Occultation (GPS-RO), AIRCRAFT, and synoptic observation (SONDE and SURFACE). To evaluate the performance of the 3DVAR system, we conducted a case study belonged to the semi-real time forecast periods. Along with some verification score, we identify the assimilation effects on the example of typhoon forecast.

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