Relationship between the potential and actual intensities of tropical cyclones on interannual time scales
[1] The thermodynamic theory for the physics of a mature tropical cyclone (TC) tells us that the cyclone's intensity cannot exceed an upper bound, the potential intensity (PI). This combined with an empirical result due to Emanuel leads to a prediction of average TC intensity change, given the...
Main Authors: | , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Columbia University
2007
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7916/d8sb44wf https://academiccommons.columbia.edu/doi/10.7916/D8SB44WF |
id |
ftdatacite:10.7916/d8sb44wf |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7916/d8sb44wf 2023-05-15T17:33:50+02:00 Relationship between the potential and actual intensities of tropical cyclones on interannual time scales Wing, A. A. Sobel, Adam H. Camargo, Suzana J. 2007 https://dx.doi.org/10.7916/d8sb44wf https://academiccommons.columbia.edu/doi/10.7916/D8SB44WF unknown Columbia University https://dx.doi.org/10.1029/2006gl028581 Geophysics Meteorology Text Articles article-journal ScholarlyArticle 2007 ftdatacite https://doi.org/10.7916/d8sb44wf https://doi.org/10.1029/2006gl028581 2021-11-05T12:55:41Z [1] The thermodynamic theory for the physics of a mature tropical cyclone (TC) tells us that the cyclone's intensity cannot exceed an upper bound, the potential intensity (PI). This combined with an empirical result due to Emanuel leads to a prediction of average TC intensity change, given the change in PI. The slope of the predicted relationship between percentagewise variations in PI and those in intensity can vary between 0.5 and 1, depending on the mean PI and on what threshold is applied to the intensity data. For the Atlantic and Pacific, typical values are around 0.65 when tropical storms are excluded and 0.8 when they are included. The authors use best track data for the North Atlantic and western North Pacific, combined with PI computed from reanalysis data sets, to test these predictions. The results show that observed interannual variations of maximum TC intensity are consistent with the predictions of PI theory. Modest fractions of the variance in actual intensity are explained by PI variations. Much of the interannual variation in PI experienced by the storms comes from variation in TC tracks, so that the storms in different years are more or less likely to sample regions of high PI, rather than from variations in PI at a fixed location. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geophysics Meteorology |
spellingShingle |
Geophysics Meteorology Wing, A. A. Sobel, Adam H. Camargo, Suzana J. Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
topic_facet |
Geophysics Meteorology |
description |
[1] The thermodynamic theory for the physics of a mature tropical cyclone (TC) tells us that the cyclone's intensity cannot exceed an upper bound, the potential intensity (PI). This combined with an empirical result due to Emanuel leads to a prediction of average TC intensity change, given the change in PI. The slope of the predicted relationship between percentagewise variations in PI and those in intensity can vary between 0.5 and 1, depending on the mean PI and on what threshold is applied to the intensity data. For the Atlantic and Pacific, typical values are around 0.65 when tropical storms are excluded and 0.8 when they are included. The authors use best track data for the North Atlantic and western North Pacific, combined with PI computed from reanalysis data sets, to test these predictions. The results show that observed interannual variations of maximum TC intensity are consistent with the predictions of PI theory. Modest fractions of the variance in actual intensity are explained by PI variations. Much of the interannual variation in PI experienced by the storms comes from variation in TC tracks, so that the storms in different years are more or less likely to sample regions of high PI, rather than from variations in PI at a fixed location. |
format |
Text |
author |
Wing, A. A. Sobel, Adam H. Camargo, Suzana J. |
author_facet |
Wing, A. A. Sobel, Adam H. Camargo, Suzana J. |
author_sort |
Wing, A. A. |
title |
Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
title_short |
Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
title_full |
Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
title_fullStr |
Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
title_full_unstemmed |
Relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
title_sort |
relationship between the potential and actual intensities of tropical cyclones on interannual time scales |
publisher |
Columbia University |
publishDate |
2007 |
url |
https://dx.doi.org/10.7916/d8sb44wf https://academiccommons.columbia.edu/doi/10.7916/D8SB44WF |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1029/2006gl028581 |
op_doi |
https://doi.org/10.7916/d8sb44wf https://doi.org/10.1029/2006gl028581 |
_version_ |
1766132475728232448 |