Status of Operational Atmospheric Motion Vector from GEO-KOMPSAT-2A (GK2A) at KMA
The GEO-KOMPSAT-2A (GK2A) satellite provides observational images from 25 July 2019 operationally. The National Meteorological Satellite Center (NMSC) of the Korea Meteorological Agency(KMA) started to disseminate Atmospheric Motion Vectors(AMVs) of GK2A via the Global Telecommunication System(GTS) since 25 October 2019.
This study gives information on the recent operational development conducted on the GK2A AMVs products and the performances of them. Research activities have led to several changes in the operational algorithm, such as elimination of cloud base correction, alternation of inversion layer correction, and the implementation of an additional process to set the altitude of water vapor winds. The quantitative and qualitative validation were performed using radio-sonde, numerical weather prediction model, and Cloud-Aerosol Lidar and Infrared Pathfinder Observations (CALIPSO) data. In addition, we will present the impact of AMV in the Korean Integrated Model(KIM) system for global weather forecasting. Last, KMA plans to develop rapid-scan AMV using high temporal(2 minutes) and spatial resolution(0.5 km) images, and it is expected that rapid-scan AMV can be useful for small scale winds and typhoon analysis.
