气象
氣象
기상
METEOROLOGICAL MONTHLY
2009年
5期
26-33
,共8页
林良勋%吴乃庚%蔡安安%庄旭东
林良勛%吳迺庚%蔡安安%莊旭東
림량훈%오내경%채안안%장욱동
低温雨雪冰冻%天气气候成因%预报与应急响应
低溫雨雪冰凍%天氣氣候成因%預報與應急響應
저온우설빙동%천기기후성인%예보여응급향응
cryogenic freezing rain and snow weather%disaster characteristic and influence%weather and climate analysis%forecast and emergency response%rethinking of disaster
2008年初我国南方遭受了百年一遇低温雨雪冰冻灾害,广东的受灾程度属80年一遇,造成了重大经济损失和严重社会影响.分析发现:灾害过程在近年来最严重的一次"拉尼娜"事件背景下发生的,与欧亚地区持续大气环流异常密切相关.在"北脊南槽"和西太平洋副高偏北偏强的形势下,冷暖气流在我国南方地区频繁交汇,使对流层中低层形成逆温层和局地经向环流产生异常,造成了此次持续低温雨雪冰冻过程.面对灾害引发的公共事件,广东省气象部门打破常规、准确预警,启动预案,通过媒体和"公共事件预警信息发布平台",及时传播权威的公共预警信息,为安定民心、稳定社会、减少灾害起到积极作用.灾后反思发现,山区冰灾的监测、灾害的评估、公共信息发布等的能力和规范均亟待加强.
2008年初我國南方遭受瞭百年一遇低溫雨雪冰凍災害,廣東的受災程度屬80年一遇,造成瞭重大經濟損失和嚴重社會影響.分析髮現:災害過程在近年來最嚴重的一次"拉尼娜"事件揹景下髮生的,與歐亞地區持續大氣環流異常密切相關.在"北脊南槽"和西太平洋副高偏北偏彊的形勢下,冷暖氣流在我國南方地區頻繁交彙,使對流層中低層形成逆溫層和跼地經嚮環流產生異常,造成瞭此次持續低溫雨雪冰凍過程.麵對災害引髮的公共事件,廣東省氣象部門打破常規、準確預警,啟動預案,通過媒體和"公共事件預警信息髮佈平檯",及時傳播權威的公共預警信息,為安定民心、穩定社會、減少災害起到積極作用.災後反思髮現,山區冰災的鑑測、災害的評估、公共信息髮佈等的能力和規範均亟待加彊.
2008년초아국남방조수료백년일우저온우설빙동재해,엄동적수재정도속80년일우,조성료중대경제손실화엄중사회영향.분석발현:재해과정재근년래최엄중적일차"랍니나"사건배경하발생적,여구아지구지속대기배류이상밀절상관.재"북척남조"화서태평양부고편북편강적형세하,랭난기류재아국남방지구빈번교회,사대류층중저층형성역온층화국지경향배유산생이상,조성료차차지속저온우설빙동과정.면대재해인발적공공사건,광동성기상부문타파상규、준학예경,계동예안,통과매체화"공공사건예경신식발포평태",급시전파권위적공공예경신식,위안정민심、은정사회、감소재해기도적겁작용.재후반사발현,산구빙재적감측、재해적평고、공공신식발포등적능력화규범균극대가강.
At the beginning of 2008, South China encounters freezing rain disaster which is the most serious freezing rain in the past 100 year. Especially in Guangdong Province, it caused great economic loss and social impact. The results show that this case is associated with La Nina event and anomalous atmospheric circulation. The circulation situation of the middle and high levels in Asia and Europe was a pattern of north ridge and south trough circulation pattern and the western Pacific subtropical high was stronger in intensity and northward in position. The cold air moving down from the north-east side of Tibetan Plateau and butting up against moist southerly form the Bay of Bengal and the South China Sea produced the low-level temperature inversion over South China and the anomalous local-meridional circulation, which caused the continuous cryogenic freezing rain and snow weather. When confront the public events that caused by the freezing rain, Guangdong Provincial Meteorology Bureau has a good communication with the media, authority weather warning information are published in time, which has a positive effect in stabilize the popular feelings and society. Rethinking of disaster found that the ability of monitoring, evaluating and information publishing about freezing rain disaster in mountain area still need to be reinforced.