Updates on AMV Datasets and Their Use at NCEP GSI
In the last few years a number of imaging instruments were replaced with newer imagers of similar capabilities providing global coverage. Himawari-8, Meteosat-8 and 11, GOES-16 and 17 are almost identical in terms of spatial and spectral potential. AMVs retrieval algorithms keep up to respond to instrumental and imagery improvements. Continuously evolving NWP models adapt to product change as well.
NCEP GSI has been updated to assimilate geostationary GOES-16 and GOES-17 AMVs, and polar NOAA-20 VIIRS. We will present the work introducing these two data streams, and results from evaluating and improving the AMVs Observation operator in NCEP GSI, addressing changes in the AMV products.
We will also present results from evaluating Leo-Geo winds, showing strong potential for positive impact in DA, and preliminary results from investigating ESA’s Aeolus Doppler Lidar wind profiles.
