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专家为何说世纪寒潮言过其实:前期已降温

来源: 南方日报网络版     时间: 2019年12月12日 02:23:47
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(带)(水)(猪)(皮)(接)(触)(到)(室)(外)(的)(铁)(门)(时)(,瞬)(间)(就)(粘)(住)(撕)(不)(下)(来)(
  大)(家)(不)(妨)(“对)(号)(入)(座)(”,看)(看)(自)(己)(所)(处)(的)(地)(区)(在)(本)(轮)(寒)(潮)(中)(将)(有)(何)(表)(现)(:
  有)(的)(地)(方)(刮)(大)(风)(:1月)(21日)(至)(25日)(,中)(东)(部)(地)(区)(自)(北)(向)(南)(将)(出)(现)(大)(风)(和)(强)(降)(温)(天)(气)(。西)(北)(地)(区)(东)(部)(、内)(蒙)(古)(、华)(北)(、东)(北)(地)(区)(南)(部)(、黄)(淮)(、江)(淮)(、江)(汉)(、江)(南)(、华)(南)(及)(西)(南)(地)(区)(东)(部)(的)(气)(温)(将)(先)(后)(下)(降)(6~8℃,华)(北)(北)(部)(、江)(南)(东)(北)(部)(及)(云)(南)(东)(部)(和)(南)(部)(等)(地)(局)(地)(降)(温)(幅)(度)(可)(达)(10~14℃;长)(江)(中)(下)(游)(地)(区)(的)(最)(低)(气)(温)(将)(下)(降)(至)(零)(下)(10℃左)(右)(。上)(述)(地)(区)(还)(将)(伴)(有)(4~5级)(偏)(北)(风)(,江)(河)(湖)(面)(以)(及)(山)(区)(迎)(风)(坡)(风)(力)(有)(6~7级)(,东)(部)(海)(区)(风)(力)(有)(6~8级)(,阵)(风)(可)(达)(9级)(。
  有)(的)(地)(方)(下)(大)(雨)(:1月)(20日)(至)(23日)(,江)(淮)(及)(其)(以)(南)(地)(区)(将)(出)(现)(雨)(雪)(天)(气)(过)(程)(,大)(部)(地)(区)(累)(计)(降)(水)(量)(有)(10~25毫)(米)(,安)(徽)(南)(部)(、江)(西)(中)(北)(部)(、福)(建)(北)(部)(、浙)(江)(等)(地)(降)(水)(量)(将)(高)(达)(30~50毫)(米)(。
  有)(的)(地)(方)(下)(暴)(雪)(:1月)(20日)(夜)(间)(至)(22日)(白)(天)(,湖)(北)(,安)(徽)(南)(部)(、江)(苏)(南)(部)(、上)(海)(、浙)(江)(中)(北)(部)(、江)(西)(中)(北)(部)(、湖)(南)(中)(北)(部)(等)(地)(将)(有)(小)(到)(中)(雨)(转)(大)(到)(暴)(雪)(,浙)(江)(中)(北)(部)(局)(地)(有)(大)(暴)(雪)(,过)(程)(累)(计)(降)(雪)(量)(有)(5~15毫)(米)(,浙)(江)(中)(北)(部)(局)(地)(达)(20毫)(米)(。积)(雪)(深)(度)(可)(达)(5~10厘)(米)(,部)(分)(地)(区)(15~20厘)(米)(。另)(外)(,新)(疆)(、西)(北)(地)(区)(东)(部)(将)(有)(小)(到)(中)(雪)(,局)(地)(大)(雪)(,西)(藏)(南)(部)(将)(有)(中)(到)(大)(雪)(,局)(地)(暴)(雪)(。
  有)(的)(地)(方)(有)(冻)(雨)(:1月)(21日)(至)(22日)(,湖)(南)(、贵)(州)(的)(部)(分)(地)(区)(将)(出)(现)(冻)(雨)(天)(气)(。
  这)(次)(寒)(潮)(称)(得)(上)(是)(“世)(纪)(寒)(潮)(”吗)(?
  1月)(18日)(,黑)(龙)(江)(省)(黑)(河)(市)(,官)(兵)(们)(出)(来)(站)(岗)(才)(一)(个)(小)(时)(,眼)(睫)(毛)(上)(都)(是)(冰)(碴)(,个)(个)(变)(成)(“冰)(人)(”。
  张)(涛)(认)(为)(,仅)(凭)(现)(有)(的)(气)(象)(数)(据)(,称)(这)(轮)(冷)(空)(气)(过)(程)(为)(“世)(纪)(寒)(潮)(”有)(些)(言)(过)(其)(实)(。
  张)(涛)(说)(,此)(次)(极)(地)(涡)(旋)(的)(尺)(度)(、强)(度)(和)(位)(置)(比)(较)(少)(见)(,但)(通)(常)(衡)(量)(寒)(潮)(的)(标)(准)(还)(有)(降)(温)(幅)(度)(指)(标)(。从)(基)(础)(温)(度)(来)(说)(,这)(次)(确)(实)(很)(低)(;但)(从)(降)(温)(幅)(度)(这)(个)(角)(度)(来)(说)(,此)(次)(算)(不)(上)(“世)(纪)(寒)(潮)(”,就)(算)(与)(去)(年)(入)(秋)(入)(冬)(以)(来)(的)(冷)(空)(气)(来)(比)(,其)(降)(温)(幅)(度)(都)(排)(不)(上)(号)(。因)(为)(前)(期)(已)(经)(有)(冷)(空)(气)(引)(起)(降)(温)(,整)(体)(的)(基)(础)(温)(度)(已)(经)(比)(较)(低)(,这)(一)(轮)(寒)(潮)(是)(雪)(上)(加)(霜)(。
  眼)(看)(着)(有)(些)(地)(区)(将)(出)(现)(冻)(雨)(,会)(不)(会)(重)(现)(我)(国)(南)(方)(地)(区)(2008年)(大)(面)(积)(雨)(雪)(冰)(冻)(灾)(害)(?
  专)(家)(认)(为)(,本)(轮)(冷)(空)(气)(过)(程)(在)(大)(部)(分)(地)(区)(都)(是)(“三)(日)(游)(”,持)(续)(时)(间)(不)(长)(。从)(1月)(26日)(开)(始)(,中)(东)(部)(地)(区)(气)(温)(将)(逐)(渐)(回)(升)(;1月)(29日)(前)(后)(,南)(方)(地)(区)(的)(气)(温)(将)(恢)(复)(到)(正)(常)(水)(平)(。
  寒)(潮)(爆)(发)(因)(为)(啥)(?
  1月)(19日)(,烟)(台)(降)(下)(大)(雪)(,当)(地)(滨)(海)(景)(区)(出)(现)(“冰)(凌)(”景)(观)(。
  到)(底)(是)(什)(么)(引)(发)(了)(这)(次)(寒)(潮)(?专)(家)(认)(为)(,寒)(潮)(与)(高)(纬)(度)(的)(一)(个)(尺)(度)(较)(大)(、位)(置)(偏)(南)(的)(涡)(旋)(系)(统)(有)(关)(,该)(系)(统)(较)(稳)(定)(并)(不)(断)(加)(强)(,有)(助)(于)(冷)(空)(气)(形)(成)(并)(持)(续)(堆)(积)(。
  张)(涛)(解)(释)(:“这)(次)(寒)(潮)(有)(一)(个)(突)(出)(的)(特)(点)(,是)(规)(模)(非)(常)(大)(,具)(体)(而)(言)(,有)(一)(个)(几)(千)(上)(万)(公)(里)(级)(的)(大)(涡)(旋)(盘)(踞)(在)(东)(西)(伯)(利)(亚)(至)(远)(东)(,这)(促)(使)(冷)(空)(气)(堆)(积)(和)(不)(停)(地)(南)(下)(渗)(透)(。”
  中)(央)(气)(象)(台)(高)(级)(工)(程)(师)(李)(勇)(指)(出)(,本)(次)(冷)(空)(气)(过)(程)(之)(所)(以)(能)(造)(成)(较)(强)(的)(雨)(雪)(天)(气)(,是)(源)(于)(冷)(暖)(空)(气)(的)(配)(合)(。来)(自)(北)(部)(的)(冷)(空)(气)(南)(下)(降)(低)(了)(温)(度)(,而)(从)(南)(部)(来)(的)(暖)(湿)(气)(流)(则)(带)(来)(较)(多)(的)(水)(汽)(。二)(者)(的)(相)(互)(作)(用)(共)(同)(导)(致)(了)(此)(次)(寒)(潮)(“风)(雨)(交)(加)(”的)(情)(景)(,甚)(至)(到)(1月)(26日)(至)(28日)(回)(温)(之)(后)(,南)(方)(还)(会)(发)(生)(降)(雨)(过)(程)(。
  突)(然)(这)(么)(冷)(正)(常)(吗)(?
  1月)(20日)(,辽)(宁)(沈)(阳)(,一)(位)(女)(乘)(客)(坐)(在)(凝)(结)(出)(冰)(花)(的)(车)(窗)(旁)(。
  上)(个)(月)(还)(挺)(暖)(和)(的)(,这)(个)(月)(突)(然)(这)(么)(冷)(,正)(常)(吗)(?
  张)(涛)(指)(出)(,“去)(年)(12月)(冷)(空)(气)(总)(体)(偏)(弱)(,今)(年)(1月)(份)(冷)(空)(气)(突)(然)(偏)(强)(的)(可)(能)(性)(是)(存)(在)(的)(,是)(符)(合)(自)(然)(规)(律)(的)(。”大)(气)(的)(运)(行)(存)(在)(周)(期)(性)(,短)(期)(的)(天)(气)(过)(程)(,与)(长)(期)(天)(气)(状)(况)(不)(能)(一)(概)(而)(论)(。一)(次)(或)(两)(次)(天)(气)(过)(程)(,与)(整)(个)(冬)(天)(到)(底)(是)(“寒)(冬)(”还)(是)(“暖)(冬)(”并)(无)(直)(接)(关)(系)(。
  这)(轮)(寒)(潮)(是)(“单)(打)(独)(斗)(”,还)(是)(“打)(前)(站)(的)(”?冷)(空)(气)(过)(程)(结)(束)(之)(后)(,近)(期)(内)(还)(会)(有)(寒)(潮)(来)(袭)(吗)(?
  李)(勇)(表)(示)(,根)(据)(现)(有)(的)(观)(测)(,冷)(空)(气)(虽)(然)(在)(中)(高)(纬)(地)(区)(存)(在)(槽)(级)(活)(动)(,但)(还)(没)(形)(成)(涡)(,所)(以)(短)(期)(内)(不)(会)(出)(现)(相)(同)(规)(模)(的)(较)(大)(寒)(潮)(。
  寒)(潮)(对)(春)(运)(有)(啥)(影)(响)(?
  2008年)(1月)(13日)(开)(始)(,受)(冰)(雪)(影)(响)(,上)(万)(辆)(车)(、四)(五)(万)(司)(乘)(人)(员)(滞)(留)(在)(京)(珠)(高)(速)(公)(路)(上)(。
  这)(次)(寒)(潮)(正)(好)(赶)(上)(了)(即)(将)(开)(始)(的)(春)(运)(。这)(大)(过)(年)(的)(,还)(能)(按)(时)(回)(家)(吗)(?
  李)(勇)(指)(出)(,由)(于)(冷)(空)(气)(过)(程)(影)(响)(范)(围)(大)(,同)(一)(天)(的)(不)(同)(地)(区)(,气)(象)(表)(现)(可)(能)(完)(全)(不)(同)(,因)(此)(希)(望)(各)(地)(相)(关)(部)(门)(在)(保)(障)(春)(运)(交)(通)(时)(进)(行)(综)(合)(考)(量)(。
  张)(涛)(对)(不)(同)(地)(区)(的)(春)(运)(交)(通)(注)(意)(事)(项)(有)(如)(下)(建)(议)(:
  中)(东)(部)(地)(区)(将)(持)(续)(低)(温)(天)(气)(,相)(关)(部)(门)(需)(做)(好)(供)(暖)(、供)(电)(、供)(气)(、农)(产)(品)(供)(应)(等)(保)(障)(工)(作)(。
  长)(江)(中)(下)(游)(、江)(南)(和)(贵)(州)(等)(地)(需)(防)(范)(雨)(雪)(、道)(路)(结)(冰)(对)(交)(通)(运)(输)(、电)(力)(供)(应)(以)(及)(城)(市)(运)(行)(等)(的)(不)(利)(影)(响)(。
  东)(部)(和)(南)(部)(沿)(海)(省)(份)(需)(注)(意)(防)(范)(海)(上)(大)(风)(对)(海)(上)(运)(输)(的)(不)(利)(影)(响)(,1月)(23日)(开)(始)(,整)(个)(从)(北)(到)(南)(的)(东)(部)(海)(区)(都)(有)(7—9级)(的)(大)(风)(,可)(能)(威)(胁)(航)(运)(安)(全)(。城)(市)(管)(理)(部)(门)(还)(需)(留)(意)(大)(风)(可)(能)(导)(致)(的)(高)(空)(坠)(物)(。
  江)(西)(、湖)(南)(、浙)(江)(、湖)(北)(、安)(徽)(等)(地)(的)(降)(雪)(和)(低)(温)(天)(气)(,会)(对)(露)(地)(蔬)(菜)(、油)(菜)(生)(长)(、温)(室)(大)(棚)(等)(产)(生)(不)(利)(影)(响)(,需)(做)(好)(防)(范)(工)(作)(。
  华)(南)(中)(南)(部)(部)(分)(亚)(热)(带)(作)(物)(、热)(带)(经)(济)(林)(果)((香)(蕉)(、菠)(萝)(等)()、水)(产)(养)(殖)(可)(能)(遭)(受)(寒)(害)(,需)(注)(意)(防)(范)(。
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