%AWu, Xue [Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China, College of Earth and Planetary Sciences University of Chinese Academy of Sciences Beijing China]%AHoffmann, Lars [Jülich Supercomputing Centre Jülich Germany]%AWright, Corwin [Centre for Space, Atmospheric and Oceanic Science, University of Bath Bath UK]%AHindley, Neil [Centre for Space, Atmospheric and Oceanic Science, University of Bath Bath UK]%AKalisch, Silvio [Department of Atmospheric Sciences Yonsei University Seoul South Korea]%AAlexander, M. [NorthWest Research Associates CoRA Office Boulder CO USA]%AWang, Yinan [Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China]%BJournal Name: Geophysical Research Letters; Journal Volume: 49; Journal Issue: 1; Related Information: CHORUS Timestamp: 2023-08-20 15:54:50 %D2021%IDOI PREFIX: 10.1029 %JJournal Name: Geophysical Research Letters; Journal Volume: 49; Journal Issue: 1; Related Information: CHORUS Timestamp: 2023-08-20 15:54:50 %K %MOSTI ID: 10385512 %PMedium: X %TStratospheric Gravity Waves as a Proxy for Hurricane Intensification: A Case Study of Weather Research and Forecast Simulation for Hurricane Joaquin %XAbstract

We conducted simulations with a 4‐km resolution for Hurricane Joaquin in 2015 using the weather research and forecast (WRF) model. The model data are used to study stratospheric gravity waves (GWs) generated by the hurricane and how they correlate with hurricane intensity. The simulation results show spiral GWs propagating upward and anticlockwise away from the hurricane center. GWs with vertical wavelengths up to 14 km are generated. We find that GW activity is more frequent and intense during hurricane intensification than during weakening, particularly for the most intense GW activity. There are significant correlations between the change of stratospheric GW intensity and hurricane intensity. Therefore, the emergence of intensive stratospheric GW activity may be considered a useful proxy for identifying hurricane intensification.

%0Journal Article