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“国产做受❌❌❌高潮水立方”-环球时报

秋台风“康国产做受❌❌❌高潮水立方妮”姗姗来迟 气象专家权威解读

来源: 观察者网
2024-11-01 08:47:29

最佳回答

“国产做受❌❌❌高潮水立方”秋台风“康国产做受❌❌❌高潮水立方妮”姗姗来迟 气象专家权威解读

  中新国产做受❌❌❌高潮水立方网福州10月30日电 (国产做受❌❌❌高潮水立方龙敏 国产做受❌❌❌高潮水立方张钤 廖玥)今年第21号台风“康妮”快速增强,已于10月30日早晨加强为超强台风。作为秋台风,“姗姗来迟”的“康妮”路径多变,实力不容小觑。记者采访了福建省气象台首席预报员赖巧珍,多方位解读此轮台风天气过程。

  赖巧珍介绍,从卫星云图来看,“康妮”体型庞大,结构对称,台风眼清晰,极其“肥硕”的核心云团正以每小时15至20公里左右的速度继续向西北方向移动。预计“康妮”将于31日中午前后在台湾岛东部沿海登陆,尔后穿过台湾岛向闽浙沿海靠近。

  台风登陆台湾岛后,路径走向将如何变化?赖巧珍表示,受高空槽东移靠近和副热带高压东退的影响,引导气流偏北分量加大,台风将逐渐转向东北方向移动。但由于高空槽移动、副热带高压减弱东退进程以及冷空气影响程度的预报均具有不确定性,且台风登陆穿过台湾岛后,其强度和结构都将受到严重破坏,导致台风后期路径还存在变数,不排除登陆闽浙沿海的可能性。

  移速方面,为何“康妮”前期移动缓慢,后期明显加速前进?赖巧珍解释,台风移动速度主要受环境引导气流和台风自身强度、结构等因素影响。当台风生成初期或者引导气流比较弱时,台风的移速主要和台风强度有关,台风越强,移速越慢。从路径预报图上看,“康妮”前期发展阶段正忙于“长身体”,蹒跚地学走路,但当台风“康妮”发展到较强强度时,自身内力形成并逐渐增强,且更靠近副热带高压,引导气流加强,使其“健步如飞”。到了后期,台风穿过台湾岛,强度明显减弱,在副热带高压和高空槽的叠加效应下,引导气流仍继续加强,台风继续保持高速运行。

  “康妮”何以实现短期内快速增强,后期强度将如何变化?赖巧珍说,前期“康妮”所处的海域海表温度较高,上空环境风垂直切变小,有利环境令其飞速地完成24小时强度三级跳,登陆后,受台湾岛地形摩擦及增大的垂直风切变影响,台风强度将逐渐减弱。

  台风将给福建带来怎样的风雨影响?受台风“康妮”影响,福建将迎来大风和强降水。30日夜间至11月1日,福建沿海海区和渔场最大风力可达10至12级、阵风12至14级;陆上大风预计沿海地区部分县市阵风可达8至10级。台风带来的强降水时段集中在10月31日至11月1日,中北部沿海地区有暴雨到大暴雨。

  秋台风指出生于9月至11月的台风。秋台风有何特点?赖巧珍介绍,秋台风更倾向于生成在西北太平洋较低纬度的洋面上,那里的海温较近海海温和高纬度海温更高,能量充足,该海域距离陆地远,台风能够有充足的时间和空间来“长身体”,往往能够长成结构对称,台风眼清晰的台风,因此,秋台风发展为超强台风的比例更高。也正是由于其生命史长,副热带高压和冷空气等影响因子变数大,台风强度、路径走向、风雨影响常常让人捉摸不透。例如,让秋台风又爱又恨的冷空气,它的参与会造成台风风雨影响范围更大、影响时间可能变长,但当冷空气太强时,又不利于台风的发展,进而影响台风路径的变化,增加预报难度。总而言之,秋台风都不可小觑,需加强防范。

  气象专家提醒,此次台风过程需特别防范海上大风及中北部沿海地区台风暴雨的灾害影响。(完)

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