15th International Winds Workshop April 12 - 16, 2021 Virtual (13 UTC Start Time)

JMA’s latest geostationary meteorological satellites, Himawari-8 and -9 are positioned at around 140.7E and cover the same region over the eastern part of Asia and the Western Pacific. Himawari-9 has been suspended its observation operation as a backup satellite for currently operational Himawari-8. JMA/MSC has derived Atmospheric Motion Vectors (AMVs) from the Himawari-8/AHI’s multi bands and highly frequent imagery since July 2015, and has disseminated the full-disk AMVs (VIS; 0.64μm, IR; 10.4μm and WV; 6.2/6.9/7.3μm) every hour via the Global Telecommunication System (GTS). The JMA plans to switch the role of the operational satellite from Himawari-8 to Himawari-9 at the end of 2022.

JMA plans to update AMV in the second half of 2021. There are no major changes to the derivation algorithm nor the AMV quality, but the content of the distributed data will be enhanced. The details of the planning changes are as follows.

・Addition of NIR (3.7 μm) and CO2(13.3 μm) winds

・Full disk AMV every 30 minutes

・Dissemination with new BUFR template

・Quality control information on cloud height (uncertainty of height, etc.)

・Abolition of QI with forecast

As one of the AMV development for the future, JMA is currently trying to improve the quality of AMV using machine learning techniques. Current findings on super-resolution for spectral and spatial resolution for satellite images will be presented.