Warm Season Afternoon Thunderstorm Characteristics under Weak Synoptic-Scale Forcing over Taiwan Island
The spatial and temporal characteristics and distributions of thunderstorms in Taiwan during the warm season (May–October) from 2005 to 2008 and under weak synoptic-scale forcing are documented using radar reflectivity, lightning, radiosonde, and surface data. Average hourly rainfall amounts peaked...
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| Veröffentlicht in: | Weather and forecasting 2011-02, Vol.26 (1), p.44-60 |
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| creator | LIN, Pin-Fang CHANG, Pao-Liang JOU, Ben Jong-Dao WILSON, James W ROBERTS, Rita D |
| description | The spatial and temporal characteristics and distributions of thunderstorms in Taiwan during the warm season (May–October) from 2005 to 2008 and under weak synoptic-scale forcing are documented using radar reflectivity, lightning, radiosonde, and surface data. Average hourly rainfall amounts peaked in midafternoon (1500–1600 local solar time, LST). The maximum frequency of rain was located in a narrow strip, parallel to the orientation of the mountains, along the lower slopes of the mountains. Significant diurnal variations were found in surface wind, temperature, and dewpoint temperature between days with and without afternoon thunderstorms (TSA and non-TSA days). Before thunderstorms occurred, on TSA days, the surface temperature was warmer (about 0.5°–1.5°C) and the surface dewpoint temperature was moister (about 0.5°–2°C) than on non-TSA days. Sounding observations from northern Taiwan also showed warmer and higher moisture conditions on TSA days relative to non-TSA days. The largest average difference was in the 750–550-hPa layer where the non-TSA days averaged 2.5°–3.5°C drier. These preconvective factors associated with the occurrences of afternoon thunderstorms could be integrated into nowcasting tools to enhance warning systems and decision-making capabilities in real-time operations. |
| doi_str_mv | 10.1175/2010waf2222386.1 |
| format | Article |
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Average hourly rainfall amounts peaked in midafternoon (1500–1600 local solar time, LST). The maximum frequency of rain was located in a narrow strip, parallel to the orientation of the mountains, along the lower slopes of the mountains. Significant diurnal variations were found in surface wind, temperature, and dewpoint temperature between days with and without afternoon thunderstorms (TSA and non-TSA days). Before thunderstorms occurred, on TSA days, the surface temperature was warmer (about 0.5°–1.5°C) and the surface dewpoint temperature was moister (about 0.5°–2°C) than on non-TSA days. Sounding observations from northern Taiwan also showed warmer and higher moisture conditions on TSA days relative to non-TSA days. The largest average difference was in the 750–550-hPa layer where the non-TSA days averaged 2.5°–3.5°C drier. These preconvective factors associated with the occurrences of afternoon thunderstorms could be integrated into nowcasting tools to enhance warning systems and decision-making capabilities in real-time operations.</description><identifier>ISSN: 0882-8156</identifier><identifier>EISSN: 1520-0434</identifier><identifier>DOI: 10.1175/2010waf2222386.1</identifier><identifier>CODEN: WEFOE3</identifier><language>eng</language><publisher>Boston, MA: American Meteorological Society</publisher><subject>Climate ; Data collection ; Decision making ; Diurnal variations ; Earth, ocean, space ; Exact sciences and technology ; External geophysics ; Hourly rainfall ; Lightning ; Meteorology ; Moisture effects ; Mountains ; Nowcasting ; Radar ; Radar reflectivity ; Radiosondes ; Rain ; Rainfall ; Real time operation ; Reflectance ; Studies ; Surface temperature ; Surface wind ; Thunderstorms ; Warm seasons ; Warning systems ; Weather</subject><ispartof>Weather and forecasting, 2011-02, Vol.26 (1), p.44-60</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright American Meteorological Society 2011</rights><rights>Copyright American Meteorological Society Feb 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c468t-bcff10620fb62646888200d9df62870f63f404c7f4115bf4c4bbe562c0f8e68b3</citedby><cites>FETCH-LOGICAL-c468t-bcff10620fb62646888200d9df62870f63f404c7f4115bf4c4bbe562c0f8e68b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3679,27923,27924</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23901614$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>LIN, Pin-Fang</creatorcontrib><creatorcontrib>CHANG, Pao-Liang</creatorcontrib><creatorcontrib>JOU, Ben Jong-Dao</creatorcontrib><creatorcontrib>WILSON, James W</creatorcontrib><creatorcontrib>ROBERTS, Rita D</creatorcontrib><title>Warm Season Afternoon Thunderstorm Characteristics under Weak Synoptic-Scale Forcing over Taiwan Island</title><title>Weather and forecasting</title><description>The spatial and temporal characteristics and distributions of thunderstorms in Taiwan during the warm season (May–October) from 2005 to 2008 and under weak synoptic-scale forcing are documented using radar reflectivity, lightning, radiosonde, and surface data. Average hourly rainfall amounts peaked in midafternoon (1500–1600 local solar time, LST). The maximum frequency of rain was located in a narrow strip, parallel to the orientation of the mountains, along the lower slopes of the mountains. Significant diurnal variations were found in surface wind, temperature, and dewpoint temperature between days with and without afternoon thunderstorms (TSA and non-TSA days). Before thunderstorms occurred, on TSA days, the surface temperature was warmer (about 0.5°–1.5°C) and the surface dewpoint temperature was moister (about 0.5°–2°C) than on non-TSA days. Sounding observations from northern Taiwan also showed warmer and higher moisture conditions on TSA days relative to non-TSA days. The largest average difference was in the 750–550-hPa layer where the non-TSA days averaged 2.5°–3.5°C drier. 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forecasting</jtitle><date>2011-02-01</date><risdate>2011</risdate><volume>26</volume><issue>1</issue><spage>44</spage><epage>60</epage><pages>44-60</pages><issn>0882-8156</issn><eissn>1520-0434</eissn><coden>WEFOE3</coden><abstract>The spatial and temporal characteristics and distributions of thunderstorms in Taiwan during the warm season (May–October) from 2005 to 2008 and under weak synoptic-scale forcing are documented using radar reflectivity, lightning, radiosonde, and surface data. Average hourly rainfall amounts peaked in midafternoon (1500–1600 local solar time, LST). The maximum frequency of rain was located in a narrow strip, parallel to the orientation of the mountains, along the lower slopes of the mountains. Significant diurnal variations were found in surface wind, temperature, and dewpoint temperature between days with and without afternoon thunderstorms (TSA and non-TSA days). Before thunderstorms occurred, on TSA days, the surface temperature was warmer (about 0.5°–1.5°C) and the surface dewpoint temperature was moister (about 0.5°–2°C) than on non-TSA days. Sounding observations from northern Taiwan also showed warmer and higher moisture conditions on TSA days relative to non-TSA days. The largest average difference was in the 750–550-hPa layer where the non-TSA days averaged 2.5°–3.5°C drier. These preconvective factors associated with the occurrences of afternoon thunderstorms could be integrated into nowcasting tools to enhance warning systems and decision-making capabilities in real-time operations.</abstract><cop>Boston, MA</cop><pub>American Meteorological Society</pub><doi>10.1175/2010waf2222386.1</doi><tpages>17</tpages><oa>free_for_read</oa></addata></record> |
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| source | American Meteorological Society; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Climate Data collection Decision making Diurnal variations Earth, ocean, space Exact sciences and technology External geophysics Hourly rainfall Lightning Meteorology Moisture effects Mountains Nowcasting Radar Radar reflectivity Radiosondes Rain Rainfall Real time operation Reflectance Studies Surface temperature Surface wind Thunderstorms Warm seasons Warning systems Weather |
| title | Warm Season Afternoon Thunderstorm Characteristics under Weak Synoptic-Scale Forcing over Taiwan Island |
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