Application of HY-2A/SCAT Records to Understanding the Surface Wind Field Structure of Typhoon Soulik
ZHAO Yong
ZHAO Chaofang
SUN Ruyao
Abstract：HY-2A Scatterometer sea surface wind records were applied to observing and studying the surface wind field structure of typhoon Soulik (No.102013) in northwestern Pacific Ocean in this study.Typhoon's center positions,track and surface background winds were estimated using the wind field decomposition theorem with the improved numerical differentiation technique based on Tikhonov regularization theory.Center positions estimated here show a high degree of consistency with typhoon's vortex structure.Distribution of TC's actual (relative) tangential and radial surface winds referring to the TC center were then extracted and fitted.Most of the conclusions of the surface wind distribution confirmed past low level aircraft reconnaissance,yet some (radial winds) showed discrepancy and needed to be investigated further.The fitted model of the normalized tangential winds profile behaved like a Rankine vortex and the normalized radial winds behaved like an inverted Gaussian model,which still needed to be improved through future studies.
Keywords：HY-2A/SCATtyphooncenter locatingwind structure
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 39-47 )