5.5 Exploring the Key Features of Tropical Cyclogenesis Using Satellite Data

Thursday, 11 January 2018: 11:30 AM
Room 19AB (ACC) (Austin, Texas)
Zhuo Wang, Univ. of Illinois at Urbana−Champaign, Urbana, IL

Different satellite datasets were used along with the ERA-Interim reanalysis to investigate the key convective and thermodynamic features of tropical cyclogenesis. More than 150 named tropical cyclones over the Atlantic were examined in a quasi-Lagrangian framework, and the analysis yields the following findings.
  • The key feature of convection for TC genesis is not the intensity or extent of deep convection, but the convective organization near the pouch center.
  • Column moistening near the pouch center precedes the transition to sustained deep convection and tropical cyclogenesis.
  • Tropical cyclogenesis may be an outcome of the collective contribution by different precipitation types.
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