840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32
A two-layer discrete vortex model developed previously is applied to the study of short-term displacements of tropical vortexes due to their mutual interaction. The model treats the tropical cells as point-form vortexes and obtains analytic solutions for the stream functions in two layers in terms o...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.408.6178 2023-05-15T17:34:30+02:00 840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 M. L. Kwandekaw Gandikta V. Raq The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.408.6178 http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.408.6178 http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf text ftciteseerx 2016-01-08T03:10:29Z A two-layer discrete vortex model developed previously is applied to the study of short-term displacements of tropical vortexes due to their mutual interaction. The model treats the tropical cells as point-form vortexes and obtains analytic solutions for the stream functions in two layers in terms of Hankel functions of zero order. These solutions form a system of ordinary differential equations that governs the motion of the vortex filaments of finite strengths in the lowei and upper layers. The model can handle a finite number of vortexe? simultaneously. It a1so allows the influence of a basic flow to be considered. Initially, the model is applied to some analytical data in an attempt to study the patterns of motion for both binary and single tropical vortex systems. It is found that the individual vortexes exhibit a variety of complex trajectories depending upon their strengths and tilts, and upon stability parameters, p: and fit. Of interest in this study is the “self-interaction ” concept according to which the upper level circulation of a sloping vortex interacts with the lower level circulation. It is shown that the observed short-period oscillations of the surface trajectory of a tropical cyclone can be explained to a reasonable extent using this concept. A case study is made involving multiple vortexes over the North Atlantic Ocean. The results illustrate how mutual interaction influences the motion of individual vortexes and further demonstrate the importance of the surrounding vortexes in modifying the well-known cyclonic Text North Atlantic Unknown |
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English |
description |
A two-layer discrete vortex model developed previously is applied to the study of short-term displacements of tropical vortexes due to their mutual interaction. The model treats the tropical cells as point-form vortexes and obtains analytic solutions for the stream functions in two layers in terms of Hankel functions of zero order. These solutions form a system of ordinary differential equations that governs the motion of the vortex filaments of finite strengths in the lowei and upper layers. The model can handle a finite number of vortexe? simultaneously. It a1so allows the influence of a basic flow to be considered. Initially, the model is applied to some analytical data in an attempt to study the patterns of motion for both binary and single tropical vortex systems. It is found that the individual vortexes exhibit a variety of complex trajectories depending upon their strengths and tilts, and upon stability parameters, p: and fit. Of interest in this study is the “self-interaction ” concept according to which the upper level circulation of a sloping vortex interacts with the lower level circulation. It is shown that the observed short-period oscillations of the surface trajectory of a tropical cyclone can be explained to a reasonable extent using this concept. A case study is made involving multiple vortexes over the North Atlantic Ocean. The results illustrate how mutual interaction influences the motion of individual vortexes and further demonstrate the importance of the surrounding vortexes in modifying the well-known cyclonic |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
M. L. Kwandekaw Gandikta V. Raq |
spellingShingle |
M. L. Kwandekaw Gandikta V. Raq 840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
author_facet |
M. L. Kwandekaw Gandikta V. Raq |
author_sort |
M. L. Kwandekaw |
title |
840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
title_short |
840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
title_full |
840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
title_fullStr |
840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
title_full_unstemmed |
840 MONTHLY WEATHER REVIEW VOI. 99, No. 11 UDC 651.516.61:551.609.327:561.511.32 |
title_sort |
840 monthly weather review voi. 99, no. 11 udc 651.516.61:551.609.327:561.511.32 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.408.6178 http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.408.6178 http://docs.lib.noaa.gov/rescue/mwr/099/mwr-099-11-0840.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766133356129419264 |