Title :
Analysis of atmospheric vortex streets observed on SAR image
Author :
Li, Xiaofeng ; Clemente-Coln, P. ; Pichel, W. ; Vachon, P. ; Friedman, K.
Author_Institution :
NOAA, Maryland, MD, USA
Abstract :
The sea surface imprint of atmospheric vortex streets (AVS) observed on a RADARSAT SAR image of the Aleutian Islands in the western Gulf of Alaska acquired on December 22, 1999, is analyzed. The AVS is interpreted as the atmosphere analog of classic Von Kluman vortex streets. The AVS length is about 220 km. There are several pairs of vortices within the AVS. The vortex shedding period is estimated to be about 36 minutes. The vortex tangential velocity and the energy dissipated during the vortex lifetime are estimated using the Von Karman vortex streets theory
Keywords :
atmospheric movements; meteorology; ocean waves; oceanographic regions; troposphere; vortices; AD 1999 12 22; Aleutian Islands; Gulf of Alaska; North Pacific; SAR image; Von Kluman vortex street; atmosphere; atmospheric vortex streets; length; meteorology; sea surface; sea surface imprint; troposphere; vortex shedding period; vortex street; vortices; Atmosphere; Clouds; Frequency estimation; Image analysis; Laboratories; Oceans; Rough surfaces; Satellites; Sea surface; Surface roughness;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.859704
