Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields
Forecasts of rapid intensification (RI) within tropical cyclones continue to be a major challenge, primarily due to difficulty in determining the processes that distinguish RI and non-RI storms. In this study, the aim was to identify the most important RI/non-RI discriminatory variables in the North...
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fttriple:oai:gotriple.eu:10670/1.pd283g 2023-05-15T17:33:43+02:00 Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields Grimes, Alexandria 2016-01-01 https://doi.org/10.5772/63988 https://openresearchlibrary.org/ext/api/media/effdc235-cfe2-4566-a8b7-4d8af66661a2/assets/external_content.pdf https://openresearchlibrary.org/viewer/effdc235-cfe2-4566-a8b7-4d8af66661a2 en eng IntechOpen ISBN:9789535127024 doi:10.5772/63988 10670/1.pd283g https://openresearchlibrary.org/ext/api/media/effdc235-cfe2-4566-a8b7-4d8af66661a2/assets/external_content.pdf https://openresearchlibrary.org/viewer/effdc235-cfe2-4566-a8b7-4d8af66661a2 lic_creative-commons Open Research Library envir geo Book https://vocabularies.coar-repositories.org/resource_types/c_2f33/ 2016 fttriple https://doi.org/10.5772/63988 2023-01-22T17:55:11Z Forecasts of rapid intensification (RI) within tropical cyclones continue to be a major challenge, primarily due to difficulty in determining the processes that distinguish RI and non-RI storms. In this study, the aim was to identify the most important RI/non-RI discriminatory variables in the North Atlantic basin, not only by level, but also spatial location relative to the tropical cyclone center. These important variables, identified using rotated principal component analysis on one-dimensional and three-dimensional GEFS reforecast base-state variables from 1985 to 2009, led to the identification of diagnostic fields with the largest variability between RI and non-RI events. Hierarchical clustering techniques performed on rotated PC loadings provided map types of RI and non-RI cyclones. Analysis of these composite map types, as well as composite derived fields including divergence, relative vorticity, equivalent potential temperature, static stability, and vertical shear, revealed interesting distinguishing characteristics between RI and non-RI events. Results suggested that vorticity in the mid-levels, divergence in the upper-levels, equivalent potential temperature, and specific humidity play critical roles in successfully discriminating between RI and non-RI storms. These findings give key insights to which variables should be used in developing a prognostic classification scheme to assist with operational forecasts of tropical cyclone RI. Book North Atlantic Unknown |
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envir geo Grimes, Alexandria Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
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envir geo |
description |
Forecasts of rapid intensification (RI) within tropical cyclones continue to be a major challenge, primarily due to difficulty in determining the processes that distinguish RI and non-RI storms. In this study, the aim was to identify the most important RI/non-RI discriminatory variables in the North Atlantic basin, not only by level, but also spatial location relative to the tropical cyclone center. These important variables, identified using rotated principal component analysis on one-dimensional and three-dimensional GEFS reforecast base-state variables from 1985 to 2009, led to the identification of diagnostic fields with the largest variability between RI and non-RI events. Hierarchical clustering techniques performed on rotated PC loadings provided map types of RI and non-RI cyclones. Analysis of these composite map types, as well as composite derived fields including divergence, relative vorticity, equivalent potential temperature, static stability, and vertical shear, revealed interesting distinguishing characteristics between RI and non-RI events. Results suggested that vorticity in the mid-levels, divergence in the upper-levels, equivalent potential temperature, and specific humidity play critical roles in successfully discriminating between RI and non-RI storms. These findings give key insights to which variables should be used in developing a prognostic classification scheme to assist with operational forecasts of tropical cyclone RI. |
format |
Book |
author |
Grimes, Alexandria |
author_facet |
Grimes, Alexandria |
author_sort |
Grimes, Alexandria |
title |
Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
title_short |
Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
title_full |
Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
title_fullStr |
Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
title_full_unstemmed |
Diagnosing Tropical Cyclone Rapid Intensification Through Rotated Principal Component Analysis of Synoptic-Scale Diagnostic Fields |
title_sort |
diagnosing tropical cyclone rapid intensification through rotated principal component analysis of synoptic-scale diagnostic fields |
publisher |
IntechOpen |
publishDate |
2016 |
url |
https://doi.org/10.5772/63988 https://openresearchlibrary.org/ext/api/media/effdc235-cfe2-4566-a8b7-4d8af66661a2/assets/external_content.pdf https://openresearchlibrary.org/viewer/effdc235-cfe2-4566-a8b7-4d8af66661a2 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Open Research Library |
op_relation |
ISBN:9789535127024 doi:10.5772/63988 10670/1.pd283g https://openresearchlibrary.org/ext/api/media/effdc235-cfe2-4566-a8b7-4d8af66661a2/assets/external_content.pdf https://openresearchlibrary.org/viewer/effdc235-cfe2-4566-a8b7-4d8af66661a2 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5772/63988 |
_version_ |
1766132305555881984 |