CMA Geostationary Infrared Observation Dataset for 3D AMV Studies
FY-4A, the first satellite of the FY-4 series, is regarded as an experimental satellite, which has been launched on 14 December 2016. Starting from FY-4B which has been launched on 3 June 2021, the subsequent FY-4 series satellites will be used as operational ones. The FY-4B GIIRS has some significant performance improvements compared with FY-4A GIIRS. Its spectral range in long-wave infrared is extended from 680 cm−1 to 1130 cm−1 , so the total number of channels is 1682. Furthermore, the spatial resolution is increased to 12 km. In normal observation mode, FY-4B GIIRS make observation every two hour, support the NWP applications.
In order to exploit potentialities of Geostationary Hyperspectral Infrared observation, supporting 3D AMV studies and regional NWP applications. NSMC makes FY-4B GIIRS regional observation experiment in 2022, which make observation every 15 minutes. As a preliminary result output of the experiment, the CMA Geostationary Hyperspectral Infrared observation data set V0.9 have been generated, the technical details of the experiment, the calibration performance and the data set arrangement will be discussed.
