| 川西高原一次持续性暖区强降水分析 |
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| 引用本文： | 李德友,王玲,邹玲.川西高原一次持续性暖区强降水分析[J].高原山地气象研究,2016,36(1):81-85. |
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| 作者姓名： | 李德友 王玲 邹玲 |
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| 作者单位： | 1. 四川省阿坝州气象局, 马尔康 624000; |
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| 基金项目： | 中国气象局预报员专项(CMAYBY2014-059),川气课题2014-开发-14,阿气课题2015-1 |
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| 摘 要： | 利用MICAPS资料对2015年6月26~30日川西高原出现暖区持续性短时强降水天气过程的500h Pa平均高度、温度、湿度和风速等要素的环境场、探空气象要素时间序列进行了分析。结果发现:川西高原暖区强降水具有间歇性、突发性、局地性、强度剧烈等特点;高原暴雨区在暖区东北部、湿区中部、弱风速区内;干露锋、风速辐合、干冷空气下沉、非绝热加热可能成为高原短时强降水的触发条件;高原不稳定层结的维持和非绝热加热为局地强降水天气产生提供了有利的能量和动力环境条件,高空湿层的维持和低层水汽突增是局地短时强降水产生的水汽环境条件。这些可以作为预报高原暴雨的关注点。
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| 关 键 词： | 暖区 持续性 短时强降水 环境场 |
| 收稿时间： | 2016-03-05 |
Analysis of Strong Precipitation in a Continuous Warm Area in the Western Sichuan Plateau |
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| Affiliation: | 1. Aba Meteorological Bureau, Maerkang 624000, China;2. Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China;3. Songpan County Meteorological Bureau, Songpan 623300, China;4. Hongyuan County Bureau Meteorology, Hongyuan 624400, China |
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| Abstract: | Environmental field,sounding meteorological elements of the time series data for use MICAPS June 2015 26 to 30 Western Sichuan Plateau persistent heavy rainfall weather process warm area 500hPa average height,temperature,humidity and wind speed and other factors were analyzed. The results showed that: the West Sichuan Plateau warm area with intermittent heavy rain,sudden,local resistance,strength,violent and other characteristics; highland area in the warm rain northeast,central wet area,low wind speed area; dry Lu Feng,wind speed convergence together,the dry cold air sinks,non-adiabatic heating may become heavy rainfall plateau trigger conditions; maintenance and non-adiabatic heating plateau unstable stratification of local produce heavy rainfall weather provided favorable conditions for the energy and dynamic environment,high altitude maintenance and low-level moisture spurt wet layer is water vapor local environmental conditions produce heavy rainfall.These can be used as heavy rain forecast plateau concerns. |
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