Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation
Precipitation associated with landfalling tropical cyclones (TCs) poses a significant flood risk to vast regions along and inland of the coasts. Quantifying spatial characteristics of tropical cyclone precipitation (TCP) and defining homogeneous rainfall regions can benefit forecasts and hazard miti...
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ftdoajarticles:oai:doaj.org/article:e0254b87fb71424ba5c940528390f11e 2023-10-09T21:53:54+02:00 Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation Yao Zhou Corene J. Matyas 2021-05-01T00:00:00Z https://doi.org/10.1080/15481603.2021.1908675 https://doaj.org/article/e0254b87fb71424ba5c940528390f11e EN eng Taylor & Francis Group http://dx.doi.org/10.1080/15481603.2021.1908675 https://doaj.org/toc/1548-1603 https://doaj.org/toc/1943-7226 1548-1603 1943-7226 doi:10.1080/15481603.2021.1908675 https://doaj.org/article/e0254b87fb71424ba5c940528390f11e GIScience & Remote Sensing, Vol 58, Iss 4, Pp 542-561 (2021) tropical cyclones satellite precipitation geographic information system shape analysis multivariate clustering Mathematical geography. Cartography GA1-1776 Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.1080/15481603.2021.1908675 2023-09-24T00:36:59Z Precipitation associated with landfalling tropical cyclones (TCs) poses a significant flood risk to vast regions along and inland of the coasts. Quantifying spatial characteristics of tropical cyclone precipitation (TCP) and defining homogeneous rainfall regions can benefit forecasts and hazard mitigation of TCs. This work aims to evaluate the application of spatial metrics and satellite precipitation data in characterizing precipitation associated with landfalling TCs over the North Atlantic. This study applied an object-based Geographic Information System method to measure rainfall fields associated with North Atlantic landfalling TCs from the satellite-based rain rate estimates from 1998–2014. Eleven spatial metrics measuring the entire rainfall field and the largest rainfall polygon within the rain field were evaluated using a set of non-parametric tests to determine if they could distinguish rainfall patterns among four storm intensity categories. A multivariate clustering method with hotspot analysis was utilized to investigate spatial variations and regionalize the rainfall patterns into nine clusters using selected metrics. Five spatial metrics, namely area, solidity, dispersion, closure, and roundness, were selected since they meet three criteria: 1) having a relatively full range of 0– 1 (besides area); 2) having a significant increasing or decreasing trend with intensity, and 3) showing significant differences between any two storm categories. The clustering results indicate that TC rainfall patterns exhibit significant regional variations when storms are over land as well as over sub-basins, including the Caribbean Sea, Gulf of Mexico, and the North Atlantic. The clustering results reveal that intensity is one of the key factors in determining rainfall patterns and reflect the impact of other factors, such as wind shear, moisture content, and interaction with land. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles GIScience & Remote Sensing 58 4 542 561 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
tropical cyclones satellite precipitation geographic information system shape analysis multivariate clustering Mathematical geography. Cartography GA1-1776 Environmental sciences GE1-350 |
spellingShingle |
tropical cyclones satellite precipitation geographic information system shape analysis multivariate clustering Mathematical geography. Cartography GA1-1776 Environmental sciences GE1-350 Yao Zhou Corene J. Matyas Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
topic_facet |
tropical cyclones satellite precipitation geographic information system shape analysis multivariate clustering Mathematical geography. Cartography GA1-1776 Environmental sciences GE1-350 |
description |
Precipitation associated with landfalling tropical cyclones (TCs) poses a significant flood risk to vast regions along and inland of the coasts. Quantifying spatial characteristics of tropical cyclone precipitation (TCP) and defining homogeneous rainfall regions can benefit forecasts and hazard mitigation of TCs. This work aims to evaluate the application of spatial metrics and satellite precipitation data in characterizing precipitation associated with landfalling TCs over the North Atlantic. This study applied an object-based Geographic Information System method to measure rainfall fields associated with North Atlantic landfalling TCs from the satellite-based rain rate estimates from 1998–2014. Eleven spatial metrics measuring the entire rainfall field and the largest rainfall polygon within the rain field were evaluated using a set of non-parametric tests to determine if they could distinguish rainfall patterns among four storm intensity categories. A multivariate clustering method with hotspot analysis was utilized to investigate spatial variations and regionalize the rainfall patterns into nine clusters using selected metrics. Five spatial metrics, namely area, solidity, dispersion, closure, and roundness, were selected since they meet three criteria: 1) having a relatively full range of 0– 1 (besides area); 2) having a significant increasing or decreasing trend with intensity, and 3) showing significant differences between any two storm categories. The clustering results indicate that TC rainfall patterns exhibit significant regional variations when storms are over land as well as over sub-basins, including the Caribbean Sea, Gulf of Mexico, and the North Atlantic. The clustering results reveal that intensity is one of the key factors in determining rainfall patterns and reflect the impact of other factors, such as wind shear, moisture content, and interaction with land. |
format |
Article in Journal/Newspaper |
author |
Yao Zhou Corene J. Matyas |
author_facet |
Yao Zhou Corene J. Matyas |
author_sort |
Yao Zhou |
title |
Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
title_short |
Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
title_full |
Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
title_fullStr |
Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
title_full_unstemmed |
Regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
title_sort |
regionalization of precipitation associated with tropical cyclones using spatial metrics and satellite precipitation |
publisher |
Taylor & Francis Group |
publishDate |
2021 |
url |
https://doi.org/10.1080/15481603.2021.1908675 https://doaj.org/article/e0254b87fb71424ba5c940528390f11e |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
GIScience & Remote Sensing, Vol 58, Iss 4, Pp 542-561 (2021) |
op_relation |
http://dx.doi.org/10.1080/15481603.2021.1908675 https://doaj.org/toc/1548-1603 https://doaj.org/toc/1943-7226 1548-1603 1943-7226 doi:10.1080/15481603.2021.1908675 https://doaj.org/article/e0254b87fb71424ba5c940528390f11e |
op_doi |
https://doi.org/10.1080/15481603.2021.1908675 |
container_title |
GIScience & Remote Sensing |
container_volume |
58 |
container_issue |
4 |
container_start_page |
542 |
op_container_end_page |
561 |
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1779317269804875776 |