10:45 AM - 12:15 PM
[PEM12-P31] Research on atmospheric gravity waves associated with Extreme Weather Phenomenon (Heavy Rainfall in August 2021)
Keywords:Atmospheric gravity waves
Comparing the brightness temperature disturbance in the satellite observation data and the temperature disturbance in the reanalysis data, stripe-shaped gravity waves are seen from the East China Sea to Kyushu, respectively, and their positions and horizontal wavelengths seem to be relatively consistent. Comparing ΔNBE, a measure of the non-equilibrium component of the jet stream obtained from the parameters of the reanalysis data, with the temperature disturbance, it appears that gravity waves are generated from areas with large gradients in geopotential height, respectively.
The comparative agreement between the reanalysis data and the observed data, as well as the supposed agreement between the ΔNBE and the temperature disturbance, suggest that the observed gravity waves may be of frontal origin.