| 河西走廊东部大雾气候特征及预报方法研究 |
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| 引用本文： | 杨晓玲,丁文魁,张义海. 河西走廊东部大雾气候特征及预报方法研究[J]. 安徽农业科学, 2010, 38(7): 3432-3435 |
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| 作者姓名： | 杨晓玲 丁文魁 张义海 |
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| 作者单位： | 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开放实验室,甘肃兰州,730020;甘肃省武威市气象局,甘肃武威,733000
2. 甘肃省武威市气象局,甘肃武威,733000 |
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| 基金项目： | 甘肃省气象局2007年重点科研项目 |
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| 摘 要： | 运用河西走廊东部武威市1961-2008年大雾气象资料,采用统计学方法分析了河西走廊东部大雾天气发生的地理分布、气候特征。结果表明,大雾具有明显的地域特征,山区多于川区,南部多于北部;大雾呈逐年减少趋势,一年中大雾发生的频率最高在7-10月,一日内大雾发生的集中时段是20：00到次日08：00。同时运用ECMWF数值预报格点场资料,采用Press准则进行因子初选,逐步回归预报方法进行因子精选,使用最优子集回归建立大雾预报方程,最终确定了春、夏、秋季大雾预报的全局最优的显著性方程,3个季节预报方程的拟合率分别为85.5%、82.1%、81.2%。
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| 关 键 词： | 大雾 气候特征 ECMWF 数值预报 河西走廊 |
Study on Fog Climate Characteristic and Forecasting Method in East of Hexi Corridor |
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| YANG Xiao-ling et al. Study on Fog Climate Characteristic and Forecasting Method in East of Hexi Corridor[J]. Journal of Anhui Agricultural Sciences, 2010, 38(7): 3432-3435 |
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| Authors: | YANG Xiao-ling et al |
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| Affiliation: | Key Laboratory of Arid Climatic Change and Reducing Disaster in Gansu Province;Key Open Laboratory of Arid Climate Change and Disaster Reduction;Lanzhou Institute of Arid Meteorology;China Meteorological Administration;Lanzhou;Gansu 730020 |
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| Abstract: | Using fog meteorological data of five stations of Wuwei in east of Hexi Corridor from 1961 to 2008,geography distribution and climate characteristic of fog were analyzed with statistical method.The results showed that fog has the obvious region characteristic,fog days are more in mountainous area than sichuan area and are more in south than in north.Fog assumes reducing tendency year by year.Fog occurring frequency is the highest from July to October in one year.Fog occurring centralized time is form 20:00 ... |
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| Keywords: | Fog Climate characteristic ECMWF Numerical forecasting Hexi Corridor |
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