| 大连市蒸发量变化特征及影响因子 |
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| 引用本文： | 赵冬艳.大连市蒸发量变化特征及影响因子[J].辽宁气象,2011(4):34-38. |
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| 作者姓名： | 赵冬艳 |
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| 作者单位： | 大连市气象局,辽宁大连115001 |
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| 基金项目： | 大连市气象局项目“气象论文成果共享平台”资助 |
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| 摘 要： | 采用线性倾向估计法和累积距平曲线和完全相关系数法,分析了1951—2001年大连市蒸发量变化特征及其影响因子。结果表明：大连市年蒸发量呈增加趋势,其中夏季蒸发量的增加趋势最为明显,其次为春季,秋季和冬季蒸发量增加趋势不显著;年蒸发量的增加主要来自夏季的贡献。大连市年及四季蒸发量与日照时数、平均地面温度、平均气温日较差和平均风速总体上呈正相关,与平均相对湿度呈负相关。平均相对湿度减小和平均地面温度上升是大连市蒸发量增加的主要原因。
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| 关 键 词： | 蒸发量 影响因子 大连市 |
Characteristics of variations of pan evaporation and its influencing factors in Dalian,Liaoning province |
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| ZHAO Dong-yan.Characteristics of variations of pan evaporation and its influencing factors in Dalian,Liaoning province[J].Liaoning Meteorological Quarterly,2011(4):34-38. |
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| Authors: | ZHAO Dong-yan |
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| Institution: | ZHAO Dong-yan(Dalian Meteorological Service,Dalian 116001,China) |
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| Abstract: | The characteristics of variations of pan evaporation and its influencing factors from 1951 to 2001 were analyzed in Dalian in terms of methods of a linear tendency estimation,an cumulative anomaly and a complete correlation coefficient.The results show that the annual pan evaporation has an increasing trend.The trend is significant in summer,followed in spring.However,it is not significant in autumn and winter.Summer pan evaporation is the main contributor to annual pan evaporation.Annual and seasonal pan evaporation is positively correlated with the sunshine duration,average surface temperature,diurnal range of average temperature and average wind speed,and negatively correlated with average relative humidity.The decreasing average relative humidity and the increasing average surface temperature are the major reasons for the increasing pan evaporation in Dalian. |
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| Keywords: | Pan evaporation Influencing factors Dalian |
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