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

1 Citation (Scopus)

Abstract

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.

LanguageEnglish
Title of host publication2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages2526-2528
Number of pages3
ISBN (Electronic)9781479979295
DOIs
Publication statusPublished - 12 Nov 2015
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Milan, Italy
Duration: 26 Jul 201531 Jul 2015

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015
CountryItaly
CityMilan
Period26/07/1531/07/15

Fingerprint

Synthetic aperture radar
tropical cyclone
Boundary layers
synthetic aperture radar
boundary layer
air-sea interaction
RADARSAT
Aspect ratio
typhoon
wind field
surface wind
vortex
surface layer
wavelength
Vortex flow
ocean
Wavelength
Air
distribution
analysis

Keywords

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

Cite this

Werkmeister, A., Graber, H., Foster, R., & Romeiser, R. (2015). Tropical cyclone boundary layer rolls derived from SAR. In 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) (pp. 2526-2528). [7326325] Piscataway, NJ: IEEE. https://doi.org/10.1109/IGARSS.2015.7326325
Werkmeister, Astrid ; Graber, Hans ; Foster, Ralph ; Romeiser, Roland. / Tropical cyclone boundary layer rolls derived from SAR. 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ : IEEE, 2015. pp. 2526-2528
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title = "Tropical cyclone boundary layer rolls derived from SAR",
abstract = "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.",
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Werkmeister, A, Graber, H, Foster, R & Romeiser, R 2015, Tropical cyclone boundary layer rolls derived from SAR. in 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)., 7326325, IEEE, Piscataway, NJ, pp. 2526-2528, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015, Milan, Italy, 26/07/15. https://doi.org/10.1109/IGARSS.2015.7326325

Tropical cyclone boundary layer rolls derived from SAR. / Werkmeister, Astrid; Graber, Hans; Foster, Ralph; Romeiser, Roland.

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ : IEEE, 2015. p. 2526-2528 7326325.

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

TY - GEN

T1 - Tropical cyclone boundary layer rolls derived from SAR

AU - Werkmeister, Astrid

AU - Graber, Hans

AU - Foster, Ralph

AU - Romeiser, Roland

PY - 2015/11/12

Y1 - 2015/11/12

N2 - 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.

AB - 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.

KW - atmosphere

KW - sea surface

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Werkmeister A, Graber H, Foster R, Romeiser R. Tropical cyclone boundary layer rolls derived from SAR. In 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). Piscataway, NJ: IEEE. 2015. p. 2526-2528. 7326325 https://doi.org/10.1109/IGARSS.2015.7326325