On the Spectra of Gravity Waves Generated by Two Typical Convective Systems
AbstractSpectral characteristics of lower-stratospheric gravity waves generated in idealized mei-yu front and tropical cyclone (TC) are compared by performing high-resolution simulations. The results suggest that the systems which organize convection in different forms can generate waves with distinctly different presentation. The mei-yu front appears as a linear zonal wave source and gravity waves are dominated by cross-frontal (meridional) propagating components. The northward (southward) components have dominant meridional wavelengths of 125–333 km (>250 km), periods of 100–200 min (83–143 min), and phase speeds of 0–15 m s−1 (15–20 m s−1). The TC appears as a point wave source and gravity waves propagate equally in various horizontal directions. The waves exhibit greater power and broader spectral distributions compared with those in the mei-yu front, with dominant horizontal wavelengths longer than 62.5 km, periods of 33–600 min, and phase speeds slower than ~40 m s−1. View Full-Text
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Wang, Y.; Zhang, L.; Peng, J.; Zhang, Y.; Wei, T. On the Spectra of Gravity Waves Generated by Two Typical Convective Systems. Atmosphere 2019, 10, 405.
Wang Y, Zhang L, Peng J, Zhang Y, Wei T. On the Spectra of Gravity Waves Generated by Two Typical Convective Systems. Atmosphere. 2019; 10(7):405.Chicago/Turabian Style
Wang, Yuan; Zhang, Lifeng; Peng, Jun; Zhang, Yun; Wei, Tongfeng. 2019. "On the Spectra of Gravity Waves Generated by Two Typical Convective Systems." Atmosphere 10, no. 7: 405.
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