Solar Tides in a Multi-year High Altitude Reanalysis

The high-altitude version of the Navy Global Environmental Model (NAVGEM-HA) has produced a reanalysis field from ground to 100km for a four-year period starting from September 2017. This latest product is run with spectral resolution of T119 and has 143 vertical levels. With a hybrid four-dimensional variational (4DVAR) algorithm, it has assimilated observations both from the lower atmosphere and middle atmosphere. Most notably, it assimilated meteor radar wind measurements between 80 and 100km from 30 stations around the world. We will evaluate wind and temperature fields from this reanalysis in the MLT region, with a focus on the solar tides.