Shape measures of rain shields as indicators of changing environmental conditions in a landfalling tropical storm Export

@article{citeulike:3470909, abstract = {The atmosphere and land surface can alter the structure of a landfalling tropical cyclone (TC), resulting in complex spatial patterns of rainfall. Rather than average observations from many TCs, this study utilizes a Geographic Information System (GIS) to spatially analyse radar reflectivity data that define the rain shield of TC Dennis (1999). The effects of the atmosphere and land surface upon the rain shield are quantified through the calculation of six shape metrics: areal coverage, elongation, compactness, fragmentation, orientation, and distance and bearing of the polygon centroid from the storm circulation centre. Analysis of the data in hourly intervals reveals the extent to which the landfall process, vertical wind shear, dry air intrusion, interaction with mountains, and extratropical transition (ET) affect the location, size, and shape of the rain shield. Results illustrate the influences that multiple forcings can have upon TC structure and demonstrate that the calculation of the shape metrics can provide a method to evaluate the effects of environmental conditions upon multiple TCs. Copyright {\copyright} 2008 Royal Meteorological Society}, address = {University of Florida, Department of Geography, Florida, USA}, author = {Matyas, Corene}, citeulike-article-id = {3470909}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/met.70}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/117943159/ABSTRACT}, doi = {10.1002/met.70}, journal = {Meteorological Applications}, keywords = {centroid, cyclones, elongation, environmental\_conditions, faculty, geographic, geographic\_information\_system, geographic\_information\_system\_gis, gis, information, journal, land\_surface, landfall, matyas, metrics, radar, rain\_shield, rainfall, shape\_measures, spatial\_patterns, systems, tropical, ufgeog, vertical\_wind\_shear}, number = {2}, pages = {259--271}, posted-at = {2009-10-06 19:11:49}, priority = {0}, title = {Shape measures of rain shields as indicators of changing environmental conditions in a landfalling tropical storm}, url = {http://dx.doi.org/10.1002/met.70}, volume = {15}, year = {2008} }

TY - JOUR ID - citeulike:3470909 L3 - citeulike-article-id:3470909 N2 - The atmosphere and land surface can alter the structure of a landfalling tropical cyclone (TC), resulting in complex spatial patterns of rainfall. Rather than average observations from many TCs, this study utilizes a Geographic Information System (GIS) to spatially analyse radar reflectivity data that define the rain shield of TC Dennis (1999). The effects of the atmosphere and land surface upon the rain shield are quantified through the calculation of six shape metrics: areal coverage, elongation, compactness, fragmentation, orientation, and distance and bearing of the polygon centroid from the storm circulation centre. Analysis of the data in hourly intervals reveals the extent to which the landfall process, vertical wind shear, dry air intrusion, interaction with mountains, and extratropical transition (ET) affect the location, size, and shape of the rain shield. Results illustrate the influences that multiple forcings can have upon TC structure and demonstrate that the calculation of the shape metrics can provide a method to evaluate the effects of environmental conditions upon multiple TCs. Copyright © 2008 Royal Meteorological Society IS - 2 JF - Meteorological Applications AD - University of Florida, Department of Geography, Florida, USA EP - 271 TI - Shape measures of rain shields as indicators of changing environmental conditions in a landfalling tropical storm VL - 15 SP - 259 KW - centroid KW - cyclones KW - elongation KW - environmental_conditions KW - faculty KW - geographic KW - geographic_information_system KW - geographic_information_system_gis KW - gis KW - information KW - journal KW - land_surface KW - landfall KW - matyas KW - metrics KW - radar KW - rain_shield KW - rainfall KW - shape_measures KW - spatial_patterns KW - systems KW - tropical KW - ufgeog KW - vertical_wind_shear AU - Matyas, Corene PY - 2008/// UR - http://dx.doi.org/10.1002/met.70 ER -