干旱气象

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延伸期干旱、沙尘暴过程低频方法预报系统简介

冯建英1王芝兰1柳媛普1李 旭2   

  1. 1. 中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点实验室, 甘肃 兰州 730020;
    2. 兰州大学半干旱气候变化教育部重点实验室, 甘肃 兰州 730000
  • 出版日期:2014-10-08 发布日期:2014-10-08
  • 作者简介:冯建英(1963-),女,甘肃天水人,副研究员,从事干旱沙尘暴等灾害性天气气候成因及其预测方法研究.E-mail:1156783479@qq.com
  • 基金资助:

    中国气象局气象关键技术集成与应用项目(CMAGJ2013M55) 、干旱气象科学研究基金项目(IAM201404)及兰州大学中央高校基本科研业务费专项资金(lzujbky-2013-108)共同资助

Drought and Dust Storm Process Extended-range Forecast System Based on Low-frequency Method and Its Application

FENG Jianying1WANG Zhilan1LIU Yuanpu1LI Xu2   

  1. 1. Institute of Arid Meteorology,Key Laboratory of Arid Climatic Change and ReducingDisaster of Gansu Province,Key Laboratory of Arid Climate Change and Disaster Reduction of CMA,Lanzhou 730020,China;
    2. Key Laboratory for Semi - Arid Climate Change of the Ministry of Education,Lanzhou University,Lanzhou 730000,China
  • Online:2014-10-08 Published:2014-10-08

摘要:

对延伸期干旱、沙尘暴过程低频预报系统的整体框架、子模块构成和功能、预报方法、操作步骤及应用情况进行详细介绍。该系统主要有干旱、沙尘暴过程低频方法预报2 个子系统,各子系统包括低频天气图、关键区低频曲线2 种预报方法。目前中国气象局兰州干旱气象研究所已使用该系统对西北地区东部的干旱过程和沙尘暴过程进行预报,就沙尘暴预报效果来说,2012 年预报准确率达到75%,2011 年和2013 年的预报准确率均达到67%,预报时效达到8 ~ 31 d。而对干旱过程的预报效果,2012 年预报准确率达80%,2011、2013 年分别达75%、67%,预报时效达6 ~30 d。

关键词: 延伸期预报, 干旱过程, 沙尘暴过程, 低频天气系统

Abstract:

This paper introduces the whole framework,structure and function in sub–modules,forecast method,operational procedure and application of the drought and dust storm process extended-range low-frequency method forecast system in detail.The system mainly contains the drought and dust storm process low-frequency method forecast subsystem,and the low - frequency weather map and low-frequency curve in key area methods are all involved with the system. Up to now,the system has been used by Lanzhou Institute of Arid Meteorology to forecast drought and dust storm process in the eastern of Northwest China. The prediction accuracy rate for dust storm process is 75% in 2012,67% in 2011 and 2013,respectively,and the forecast period reaches 8-31 days.For drought process,that is 80% in 2012,75% in 2011 and 67% in 2013,respectively,and the forecast period reaches 6 -30 days.

Key words: extended-range forecast, drought process, dust storm process, low-frequency weather system

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