Horizontal Transition of Turbulent Cascade in the Near-Surface Layer of Tropical Cyclones

Details

• Journal Title:
  Journal of the Atmospheric Sciences
• Personal Author:
  Tang, Jie ; Byrne, David ; Zhang, Jun A. ; Wang, Yuan ; Lei, Xiao-tu ; Wu, Dan ; Fang, Ping-zhi ; Zhao, Bing-ke
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research)
• Description:
  Tropical cyclones (TC) consist of a large range of interacting scales from hundreds of kilometers to a few meters. The energy transportation among these different scalesthat is, from smaller to larger scales (upscale) or vice versa (downscale)may have profound impacts on TC energy dynamics as a result of the associated changes in available energy sources and sinks. From multilayer tower measurements in the low-level (<120 m) boundary layer of several landing TCs, the authors found there are two distinct regions where the energy flux changes from upscale to downscale as a function of distance to the storm center. The boundary between these two regions is approximately 1.5 times the radius of maximum wind. Two-dimensional turbulence (upscale cascade) occurs more typically at regions close to the inner-core region of TCs, while 3D turbulence (downscale cascade) mostly occurs at the outer-core region in the surface layer.
• Source:
  Journal of the Atmospheric Sciences, 72(12), 4915-4925.
• DOI:
  https://doi.org/10.1175/JAS-D-14-0373.1
• Document Type:
  Journal Article
• Funding:
  Grant no. NA14NWS4680028
• Rights Information:
  Other
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:17830ab3e005c3ac0ad9e2bcfd388dc0ff4ed912b3a3c3288a4cbd0e974f91fc
• Download URL:
  https://repository.library.noaa.gov/view/noaa/16182/noaa_16182_DS1.pdf
• File Type:
  [PDF - 1.78 MB ]