共查询到19条相似文献,搜索用时 46 毫秒
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突发灾害事件的应急气象短信服务策略 总被引:6,自引:10,他引:6
从3次公共灾害事件的应急短信服务过程总结了气象短信应急服务的经验:发布应急短信需要周密部署,除了确定信息内容、受众范围、发布时机等之外,还需要针对不同情况采用不同服务策略.分析手机短信的传播优势和应急信息的特点,认为现阶段气象部门搭建公共突发事件预警信息发布平台是可行的. 相似文献
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游积平张毅李贤浩陈新刚高建秋钟晨郑凯 《广东气象》2017,(4):60-64
根据目前我国民用无人机的性能和分类,结合广东省突发应急事件的要求,对广东省无人机气象灾害应急平台设计进行了探讨。结果表明,建立全省应急无人机统一框架,需要规范无人机视频采集格式。由无人机、通信以及地面测控等组成的无人机平台,具有集航线设计、显示回放、多媒体采集、喊话及二次开发等功能。对于不同地域的应急应选用不同类型的无人机,城市应急选用自带降落伞的多旋翼无人机;山区应急选用具有垂直起降功能的固定翼无人机;海上应急选用长航时、速度快、抗风能力强且能在沙滩上起降的固定翼无人机。 相似文献
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柳崇健 《中国气象科学研究院年报》2004,(1):22-22
“突发性强灾害天气预警系统”项目旨在为气象部门提供一套预测功能先进且响应迅速,同时具有业务化应用前景的突发性强灾害天气预警系统“叆飔雯”(EWSSWE:Early Warning System for Severe Weather Event)原型。本预警系统的先进性主要体现在:①按利用数字工程理念确定的工作主线展开研制;②采用实 相似文献
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重大气象灾害天气过程新媒体服务的思考 总被引:1,自引:0,他引:1
通过研究重大灾害天气过程新媒体服务手段、渠道及效益,期望探索气象部门与互联网企业在重大气象灾害天气服务过程高效无缝的常态化合作模式,实现"政府主导、部门联动、社会参与"防灾减灾机制,有效扩大灾害信息覆盖面,解决气象信息传播"最后一公里",达到提速扩面,高效、快速将气象灾害信息传送给社会公众,以减少气象灾害带来的生命财产损失。 相似文献
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张庆阳 《气象科技合作动态》2005,(5):29-32
联合国最近出台的报告指出,过去10年内全球发生的气象灾害导致30多万人丧生,造成经济损失超过8000亿美元。联合国建议各国制定包括气象灾害在内的综合防灾战略。本将美国、日本、英国和巴西等有代表性国家应对气象灾害的对策概述如下。 相似文献
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文章从气象灾害入手,以气象灾害应急管理为核心,着重探讨了气象灾害防御应急管理的重要性,并结合我国应急管理体制的特点和运行机制提出了加强应急管理工作、提升应急管理水平的方法和措施。 相似文献
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一次诱发山地灾害突发性暴雨数值模拟及诊断分析 总被引:5,自引:0,他引:5
应用MM5V3.5中尺度非静力数值模式对2003年7月14~15日发生在陕西省一次区域性暴雨过程进行数值模拟和诊断分析,结果发现,西太平洋副热带高压西侧的暖湿气流和新疆冷空气是这次暴雨的主要影响系统,充沛的水汽输送、能量的积聚和强烈的上升运动为暴雨的发生提供了充分的条件,700hPa低涡、切变线是暴雨形成的触发机制.模拟结果表明:涡度场和散度场及垂直上升运动互耦;特强辐合辐散柱的出现早于强涡度柱,而深厚的强气旋性涡柱则几乎与暴雨最强盛时期同时出现. 相似文献
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As the strongest subseasonal atmospheric variability during boreal winter, three remarkable sudden stratospheric major warming(SSW) events in the 2000 s are investigated in terms of the Brewer–Dobson circulation(BDC) response. Our study shows that the changes of cross-isentropic velocity during the SSWs are not only confined to the polar region, but also extend to the whole Northern Hemisphere: enhanced descent in the polar region, as well as enhanced ascent in the tropics. When the acceleration of the deep branch of the BDC descends to the middle stratosphere, its strength rapidly decreases over a period of one to two weeks. The acceleration of the deep branch of the BDC is driven by the enhanced planetary wave activity in the mid-to-high-latitude stratosphere. Different from the rapid response of the deep branch of the BDC, tropical upwelling in the lower stratosphere accelerates up to 20%–40% compared with the climatology, 20–30 days after the onset of the SSWs,and the acceleration lasts for one to three months. The enhancement of tropical upwelling is associated with the large-scale wave-breaking in the subtropics interacting with the midlatitude and tropical Quasi-Biennial Oscillation–related mean flow. 相似文献
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Masakazu TAGUCHI 《大气科学进展》2020,37(3):250-258
This study reports verification results of hindcast data of four systems in the subseasonal-to-seasonal(S2 S) prediction project for major stratospheric sudden warmings(MSSWs) in northern winter from 1998/99 to 2012/13. This report deals with average features across all MSSWs, and possible differences between two MSSW types(vortex displacement and split types). Results for the average features show that stratospheric forecast verifications, when further averaged among the four systems, are judge... 相似文献
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加强重大气象灾害应急服务的思考 总被引:2,自引:0,他引:2
以桂林2011年1月2~27日连续26天的低温冰冻灾害过程气象应急服务为例,分析现阶段桂林气象应急的成功经验和应急过程中存在的不足,同时结合桂林当地的建设发展,对加强重大气象灾害应急服务进行了思考,提出了重大气象灾害应急服务体系建设的一些建议。 相似文献
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通过对天气短信用户的行为特征从主观能动性、在网特征影响、县域定制、市场容量预测等方面进行分析.理清了未来一段时间短信业务发展的方向,并从产品定位,现有推广方式升级,新营销方式创新等方面进行适应策略研究探索,效果明显。 相似文献
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Influence of Major Stratospheric Sudden Warming on the Unprecedented Cold Wave in East Asia in January 2021 总被引:1,自引:1,他引:1
An unprecedented cold wave intruded into East Asia in early January 2021 and led to record-breaking or historical extreme low temperatures over vast regions.This study shows that a major stratospheric sudden warming(SSW)event at the beginning of January 2021 exerted an important influence on this cold wave.The major SSW event occurred on 2 January 2021 and subsequently led to the displacement of the stratospheric polar vortex to the East Asian side.Moreover,the SSW event induced the stratospheric warming signal to propagate downward to the mid-to-lower troposphere,which not only enhanced the blocking in the Urals-Siberia region and the negative phase of the Arctic Oscillation,but also shifted the tropospheric polar vortex off the pole.The displaced tropospheric polar vortex,Ural blocking,and another downstream blocking ridge over western North America formed a distinct inverted omega-shaped circulation pattern(IOCP)in the East Asia-North Pacific sector.This IOCP was the most direct and impactful atmospheric pattern causing the cold wave in East Asia.The IOCP triggered a meridional cell with an upward branch in East Asia and a downward branch in Siberia.The meridional cell intensified the Siberian high and low-level northerly winds,which also favored the invasion of the cold wave into East Asia.Hence,the SSW event and tropospheric circulations such as the IOCP,negative phase of Arctic Oscillation,Ural blocking,enhanced Siberian high,and eastward propagation of Rossby wave eventually induced the outbreak of an unprecedented cold wave in East Asia in early January 2021. 相似文献
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