Objective Measures of Tropical Cyclone Structure and Intensity Change From Remotely Sensed Infrared Image Data

An objective technique for obtaining features associated with the shape and dynamics of cloud structures embedded in tropical cyclones from satellite infrared images is described. As the tropical cyclone develops from an unstructured cloud cluster and intensifies, the cloud structures become more ax...

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Bibliographic Details
Published in:	IEEE transactions on geoscience and remote sensing Vol. 46; no. 11; pp. 3574 - 3580
Main Authors:	Pineros, M.F., Ritchie, E.A., Tyo, J.S.
Format:	Journal Article
Language:	English
Published:	New York, NY IEEE 01-11-2008 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Applied geophysics Brightness temperature Clouds Clusters Cyclones Dissipation Earth sciences Earth, ocean, space Exact sciences and technology Image processing Infrared detectors Infrared imagery Infrared imaging Internal geophysics Mathematical analysis meteorology Oceans Remote sensing Satellites Sea measurements Tropical cyclones Weather forecasting Wind forecasting North Atlantic Gulf of Mexico Atlantic Ocean Northwest Atlantic North American Atlantic image processing infrared rays maturity meteorology Space remote sensing remote sensing clouds intensity brightness temperature hurricanes symmetry techniques imagery organization storms
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Summary:	An objective technique for obtaining features associated with the shape and dynamics of cloud structures embedded in tropical cyclones from satellite infrared images is described. As the tropical cyclone develops from an unstructured cloud cluster and intensifies, the cloud structures become more axisymmetric about an identified reference point. Using variables derived from remotely sensed data, the technique calculates the gradient of the brightness temperatures to measure the level of symmetry of each structure, which characterizes the degree of cloud organization of the tropical cyclone. The results presented show that the technique provides an objective measure of both the structure and the intensity of the tropical cyclone from early stages, through intensification, maturity, and dissipation.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0196-2892 1558-0644
DOI:	10.1109/TGRS.2008.2000819