J4 ›› 2005, Vol. 23 ›› Issue (2): 39-43.

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Diagnosis of a Sectional Gale and Sandstorm Weather Case

QIAN Li1,2, YANG Xiao-ling2, DING Wen-kui2   

  1. 1. Institute of Arid Meteorology, CMA, Lanzhou  730020, China;2. Wuwei Meteorological Bureau of Gansu Province, Wuwei  733000,Gansu, China
  • Received:2004-11-30 Revised:2005-06-09 Online:2005-06-30 Published:2005-06-30

一次区域性冻害天气的成因分析

钱莉1,2杨晓玲2丁文魁2   

  1. 1,中国气象局兰州干旱气象研究所,甘肃兰州730020;2.甘肃省武威市气象局,甘肃武威733000
  • 作者简介:钱莉(1963-),女,浙江金华人,工程师,主要从事天气预报和研究工作.E-mail: wwqxjql@163.com
  • 基金资助:

    兰州区域气象中心“天气与气候研究室”项目资助,"武威iii灾害天气预报监测服务系统”课题资助

Abstract:

A sectional strong frost occurred continually in the east of Hexi corridor in the morning on 3 and 4 and 5 May 2004. This process engendered the most serious harm to farming and forestry in this city. Using real time MICAPS data and ground automation OhSPTVat10riS,  We analyze meteOTOlOglCal and  ChmatOlOglCa1 TeaSOriS  Of th1S  frnSt  Calalnlty  Weather pTOCPSS.  The  TPSLI1tS  S110W  that  Strong cold air explosion is directional reason of this frost calamity. Crop developing is brought forward because of air temperature anomaly high, air temperature and ground temperature below 0℃last for a long time, which aggravate extent of this frost calamity. We obtain a point of view for prediction frost on the basis upwards and put forward effective measures of defending frost.

Key words: cold wave, strong fiost, cause analysis

摘要:

2004年5月3-5日清晨,河西走廊东部地区连续发生区域性强霜冻天气,对武威市农林业生产造成有气象记录(1951年)以来最为严重的危害。文中应用实时MICAPS气象资料和地面自动观测资料,对这次冻害天气过程进行了天气学和气候学成因分析,在此基础上得到了霜冻预报的着眼点,结果表明强冷空气爆发是造成冻害的直接原因,前期y温异常偏高使农作物生育期提前、长时间持续0℃以下气温和地温加剧了冻害程度。

关键词: 寒潮, 强霜冻, 天气学, 气候学, 成因

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