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中文摘要: 根据旬降水量资料,对华北雨季进行了划分。结果表明,华北雨季开始期主要集中在7月中旬左右,结束期主要集中在8月中旬左右,雨季强度的气候变化特点是由强转弱的趋势变化。分析发现当前期春季青藏高原500hPa高度场偏高和赤道东太平洋海温场偏低时,华北雨季强度为强或偏强的趋势;反之当高度场偏低和海温场偏高时,则雨季强度为弱或偏弱的趋势,这为预报华北雨季强弱变化提供了依据。
中文关键词: 雨季，雨季强度，预报因子
Abstract:Using the dekad precipitation data, rainy season in North China is defined. The analysis shows that the rainy season begins and ends in the second dekad of July and August, respecitively. The climate change of rainy season intensity is divided into foe three stages. It was found that the change of rainy season intensity is related with the change of 500hpa height field in QinghaiXizang plateau region and ENSO event.
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引用文本：
赵汉光,1994.华北的雨季[J].气象,20(6):3-8.
,1994.Rainy Season in North China[J].Meteor Mon,20(6):3-8.
赵汉光,1994.华北的雨季[J].气象,20(6):3-8.
,1994.Rainy Season in North China[J].Meteor Mon,20(6):3-8.