Tropical cyclone boundary layer rolls derived from SAR

Astrid Werkmeister, Hans Graber, Ralph Foster, Roland Romeiser

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)


In this work we present a proposed procedure for retrieving large aspect ratio roll vortices in tropical cyclone wind fields over the ocean from Synthetic Aperture Radar (SAR) images. Preliminary results are shown for one RADARSAT-2 image of super typhoon Megi. We use surface-layer pressure-corrected high-resolution surface wind vector fields as input to a boundary layer model in order to retrieve estimates of the vertical wind distribution in the lowest 1-2 km of the tropical cyclone. Preliminary results show evidence of large aspect ratio rolls, whose wavelengths correspond to results shown in previous works. Further analysis of these profiles will help to improve the understanding of air-sea interaction under these extreme conditions.

Original languageEnglish
Title of host publication2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Place of PublicationPiscataway, NJ
Number of pages3
ISBN (Electronic)9781479979295
Publication statusPublished - 12 Nov 2015
EventIEEE International Geoscience and Remote Sensing Sympium (IGARSS 2015) - Convention Center, Milan, Italy
Duration: 26 Jul 201531 Jul 2015


ConferenceIEEE International Geoscience and Remote Sensing Sympium (IGARSS 2015)
Abbreviated titleIGARSS 2015


  • atmosphere
  • sea surface
  • synthetic aperture radar
  • tropical cyclones


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