首页|期刊简介|投稿指南|分类索引|刊文选读|订阅指南|资料|样刊邮寄查询|常见问题解答|联系我们
张晶晶. 九江市一次低温雨雪冰冻天气垂直温度层结分析[J]. 科学技术与工程, 2019, 19(33): 61-67.
张晶晶.Vertical Temperature Stratification Analysis of a Low Temperature Rain and Snow Freezing Weather in Jiujiang City[J].Science Technology and Engineering,2019,19(33):61-67.
九江市一次低温雨雪冰冻天气垂直温度层结分析
Vertical Temperature Stratification Analysis of a Low Temperature Rain and Snow Freezing Weather in Jiujiang City
投稿时间:2019-04-21  修订日期:2019-08-20
DOI:
中文关键词:  九江  阴雨雪  冻雨  温度层结
英文关键词:Jiujiang  Rain and Snow  Frozen Rain  Temperature Stratification
基金项目:2012年公益性行业(气象)科研专项(GYHY201206004);中国气象局气象关键技术集成与应用项目(CMAGJ2013M74);中国气象科学研究院灾害天气国家重点实验室2012年开放课题“南方短时强降水中β尺度结构与形成机理研究”(2012LASW-B01);2012年开放课题南京雷达气象与强天气开放实验室2012年研究基金“风廓线雷达数据质量控制与产品服务平台研究”(BJG201205) ;中国气象局预报员专项项目“2014年第10号台风“麦德姆”局地特大暴雨成因分析”(CMAYBY2015-039);江西省气象局预报员专项“两次台风暴雨过程中尺度特征对比分析”。
  
作者单位
张晶晶 Jiujiang Meteorological Bureau, Jiujiang 332000, Jiangxi Province
摘要点击次数: 464
全文下载次数: 126
中文摘要:
      运用收集到的资料分析了2018年1月25-28日九江市阴雨雪和低温天气形成原因,分析到了阴雨雪低温的恶劣天气的演变过程和水气环流特征,得出了江西地区冻雨的温度垂直分布特征结构和在九江地区具体应用情况的结论。结果表明:在条件为700hPa和500hPa稳定的环流情况下,具体的降雪区域和大气位置为850hPa-925hPa的区域的相应位置对应;水汽的输送过程非常频繁,同时该地区的辐合比较明显导致雨雪天气处于经常变化的情况;低层冷空气天气对冬天降水的形态起着非常关键的作用,江西省的冻雨情况一般发生在850-1000hPa迅速降温,同时700hPa的升温,925-700hPa有非常明显的温差。产生冻雨情况一定要存在融化层,冻雨的融化层处于700hPa左右;通常的冻雨条件是1000hPa时温度低于1℃,925hPa和850hPa时温度低于- 2℃和700hPa时温度大于>0℃,上述的数值范围是九江地区冻雨的天气遇到标准范围值,同时也应注意融化层位于850hPa的情况。研究表明随着地面的温度降低,冻雨天气越容易产生,冻雨一般发生在最低气温低于0℃,同时一天的平均气温低于1.0℃。
英文摘要:
      By using conventional observation data, the causes of the formation of low-temperature, rainy and snowy weather process in Jiujiang City from January 25 to 28, 2018 are analyzed. The circulation characteristics and evolution of continuous low-temperature, rainy and snowy weather in Jiujiang City are pointed out. The application indexes of vertical temperature stratification characteristics of freezing rain in Jiangxi Province are summarized. The results show that the location of snowfall area corresponds to the convergence area of 850 hPa-925 hPa under the stable circulation situation of 500 hPa and 700 hPa; active water vapor transport and strong convergence can maintain the rain and snow weather; low-level cold air plays a key role in the phase of winter precipitation; the occurrence of frozen rain in Jiangxi Province is usually accompanied by severe 1000-850 hPa cooling and 700 hPa warming, 925-700 hPa warming. There is obvious temperature inversion. The thawing layer is the necessary condition for the occurrence of freezing rain. The thawing layer of freezing rain is located at 700 hPa. Generally, the temperature of 1000 hPa < 1 C, 925 hPa and 850 hPa < 2 C and 700 hPa < 0 C are used as the threshold criteria for the prediction of freezing rain in Jiujiang. At the same time, attention should be paid to the situation that the thawing layer is located at 850 hPa. The lower the surface temperature is, the better the formation of frozen rain. The lowest temperature is below 0 and the average temperature is below 1.0 when the frozen rain occurs.
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第31651215位访问者
版权所有:科学技术与工程编辑部
主管:中国科学技术协会    主办:中国技术经济学会
Tel:(010)62118920 E-mail:stae@vip.163.com
京ICP备05035734号-4
技术支持:本系统由北京勤云科技发展有限公司设计

京公网安备 11010802029091号