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The interaction between the turbulence and gravity wave observed in the middle stratosphere based on the round-trip intelligent sounding system
  • Yang He,
  • Zheng Sheng,
  • Mingyuan He
Yang He
National University of Defense Technology

Corresponding Author:heyang12357@sina.com

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Zheng Sheng
National University of Defense Technology
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Mingyuan He
National University of Defense Technology
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Abstract

Based on the round-trip intelligent sounding system, we used the structure function and spectrum analysis method to analyze the interaction between the small-scale gravity wave and turbulence in the middle stratosphere. The result showed that the generation of turbulence was closely related to the Kelvin-Helmholtz(KH) billows. An upscale energy cascade occurred on the spatial scale of KH billows, while a downscale energy cascade occurred on a larger spatial scale (gravity wave scale), which resulted in the breaking of the gravity wave and turbulence. Obvious two-dimensional turbulence that the inverse energy cascade in 2D exists simultaneously with a direct enstrophy cascade to the small scales was found, which is considered to be the first-hand observation result of relevant height.