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Tropical Cyclone Parameters Derived from Synthetic Aperture Radar (SAR) Images

Reppucci, Antonio and Lehner, Susanne and Schulz-Stellenfleth, Johannes (2006) Tropical Cyclone Parameters Derived from Synthetic Aperture Radar (SAR) Images. In: Proceedings of IGARSS 2006, pp. 1-4. IGARSS 2006, 2006-07-31 - 2006-08-04, Denver (USA).

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Ocean waves play an important role in the dynamics of extreme events like hurricanes or typhoons by conditioning the air/sea fluxes of momentum, heat and moisture. In this study a data set of ENVISAT ASAR Scan SAR images (400 x 400 km coverage) are used to observe the structure of tropical cyclones and typhoons at the sea surface. The following features of hurricanes were determined: - wavelength and direction of boundary layer rolls for information of mixed boundary layer depth - radius of maximum wind speed - sea state in terms of wavelength and –direction. These image parameters are related to parametric models of hurricanes and validated by aircraft measurements from the national hurricane center (NHC). The work aims at the improvement of prediction of the cyclone track, intensity and sea state at these high wind speed conditions. The paper focuses on two illustrative case studies from August 2005, e.g., images of hurricane Katrina acquired over the Gulf of Mexico and of typhoon Talim acquired over the NW Pacific.

Document Type:Conference or Workshop Item (Speech)
Title:Tropical Cyclone Parameters Derived from Synthetic Aperture Radar (SAR) Images
AuthorsInstitution or Email of Authors
Reppucci, AntonioUNSPECIFIED
Lehner, SusanneUNSPECIFIED
Schulz-Stellenfleth, JohannesUNSPECIFIED
Journal or Publication Title:Proceedings of IGARSS 2006
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-4
Keywords:Hurricane, Typhoon, SAR wind, SAR wave
Event Title:IGARSS 2006
Event Location:Denver (USA)
Event Type:international Conference
Event Dates:2006-07-31 - 2006-08-04
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By: Bärbel Bolowski
Deposited On:23 May 2006
Last Modified:27 Apr 2009 12:54

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