主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (4): 139-143.doi: 10.3969/j.issn.1673-503X.2016.04.019

• 简报 • 上一篇    下一篇

误差订正在辽宁地区冬季温度预报中的应用

贾旭轩1,2, 田莉1, 陆井龙1, 杨扬3   

  1. 1. 沈阳中心气象台, 辽宁 沈阳 110166;
    2. 兰州大学大气科学学院, 甘肃 兰州 730000;
    3. 锦州市生态与农业气象中心, 辽宁 锦州 121000
  • 收稿日期:2015-04-20 修回日期:2015-08-14 出版日期:2016-08-30 发布日期:2016-08-30
  • 作者简介:贾旭轩,男,1984年生,工程师,主要从事数值预报释用和决策服务研究,E-mail:jiaxxmail@126.com。
  • 基金资助:
    中国气象局山洪建设项目“气象灾害管理系统”(2014)、辽宁省气象局科研项目“省级乡镇精细化气象要素指导预报研究”(201302)和辽宁省气象局乡镇预报创新团队共同资助。

Application of bias correction to temperature forecast in winter in Liaoning province

JIA Xu-xuan1,2, TIAN Li1, LU Jing-long1, YANG Yang3   

  1. 1. Shenyang Central Meteorological Observatory, Shenyang 110166, China;
    2. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China;
    3. Jinzhou Ecological and Agricultural Meteorological Center, Jinzhou 121000, China
  • Received:2015-04-20 Revised:2015-08-14 Online:2016-08-30 Published:2016-08-30

摘要: 利用7 d固定误差订正和滑动误差订正方法对2014年冬季辽宁地区中尺度业务模式2 m温度预报产品插值结果进行订正,并将订正结果与中央气象台MOS预报进行对比,分析MOS、7 d固定误差订正和滑动误差订正3种数值模式后处理方法对辽宁地区冬季温度预报准确率的影响。结果表明:经过两种误差订正后的预报结果准确率均比数值模式预报插值结果高,滑动误差订正效果优于7 d固定误差订正;24 h最高气温预报中,滑动误差订正结果的准确率最高;最低气温预报中,08时滑动误差订正结果准确率高于中央气象台MOS预报,但20时滑动误差订正结果准确率低于MOS预报。滑动误差订正需1-15 d的资料积累,比MOS方法所需资料少且操作简单,适合观测资料积累少的地区开展数值模式的温度订正。

关键词: 数值预报产品, 7 d固定误差订正, 滑动误差订正, MOS预报

Abstract: The interpolation results of 2 m temperature forecast products produced by the meso-scale operational model in winter of 2014 in Liaoning province were corrected using methods of 7-day bias correction (7DBC) and running mean bias correction (RMBC).The correction results were compared to products of MOS (model output statistics) forecast.The forecast accuracy of the three methods,MOS forecast,7DBC and RMBC,were analyzed.The results show that forecast accuracy of the two bias correction methods is higher than that of NWP (numerical weather prediction) interpolation method.The RMBC method is better than the 7DBC method.As to 24 h maximum temperature forecast,the forecast accuracy of the RMBC method is the highest.For minimum temperature forecast,the forecast accuracy of RMBC is higher than that of NMC (National Meteorological Center) MOS forecast at 08:00,while less than MOS forecast at 20:00.The method of RMBC needs accumulated data of 1 to 15 days.Compared to MOS method,the method of RMBC needs less data and is easy to operate,which is more suitable for areas without long-term records to conduct numerical model revisions for temperature.

Key words: NWP (numerical weather prediction) products, 7-day bias correction, Running-mean bias correction, MOS (model output statistics) forecast

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