| 寿光市日照时数变化特征及其影响因子分析 |
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| 引用本文： | 高学芹,高建英. 寿光市日照时数变化特征及其影响因子分析[J]. 中国农学通报, 2016, 32(20): 141-146 |
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| 作者姓名： | 高学芹 高建英 |
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| 作者单位： | 寿光市气象局,青州市气象局 |
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| 基金项目： | 潍坊市气象局气象科学技术研究项目“冬暖式蔬菜大棚种植对寿光气候的影响研究分析”(2013wfqxkt10)。 |
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| 摘 要： | 为了揭示寿光市日照时数的变化规律和特征,选用寿光市1960—2014年日照、风速、降水、总云量、相对湿度等气象资料,采用线性倾向估计、累积距平和信噪比等方法,对寿光市近55年的日照时数变化特征及其影响因子进行了统计分析。结果表明:寿光市年日照时数呈显著减少,气候倾向率为-66.15 h/10 a;其中夏季减少的趋势最显著,气候倾向率为-26.52 h/10 a,春季减少趋势最不明显;日照时数年代际变化呈"阶梯"状显著减少,气候倾向率为-71.68 h/10 a;1—12月日照时数的年变化均呈减少趋势,6月减少趋势最为明显,倾向率为-10.65 h/10 a。寿光市四季和年日照时数在随时间的变化过程中均不存在显著突变。年日照时数与年降水量、降水日数、总云量、水汽压呈负相关,与平均风速、相对湿度和雾日数呈正相关。寿光市日照时数与各气象因子的关联程度随季节不同而异,平均风速和总云量成为影响寿光市年、四季日照时数显著减小的重要气象因子。
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| 关 键 词： | 日照时数 气候倾向率 突变 影响因子 |
| 收稿时间： | 2015-11-29 |
| 修稿时间： | 2015-12-11 |
Analysis on Sunshine Time Variation Characteristics andInfluencing Factor Thereof in Shouguang |
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| Abstract: | Meteorological data in Shouguang from 1960 to 2014, including sunshine, wind speed, precipitation, total cloud cover, relative humidity, etc., are selected in order to reveal sunshine time change rules and characteristics in Shouguang. Linear trend estimation, cumulative departure, signal-to-noise ratio and other methods are adopted for statistically analyzing sunshine time variation characteristics and its influencing factors of Shouguang in recent 55 years. Results show that annual sunshine time of Shouguang is significantly reduced, climate tendency rate is 66.15 h / 10 a; wherein reduction trend in summer is the most significant, climate tendency rate is -26.52h/10a, reduction trend in spring is not obvious; Sunshine time decadal change is significantly reduced in "ladder" shape, and climate tendency rate is 71.68 h/10 a; annual sunshine time from January to December is reducing, reduction in June is the most obvious. The tendency rate is 10.65 h/10 a. Season and annual sunshine time in Shouguang do not have significant mutations in the changing process with time. Annual sunshine time has negative correlation with annual precipitation, precipitation duration, total cloud cover and vapor pressure, and positive correlation with average wind speed, relative humidity and fog days. Correlation between sunshine time and various meteorological factors varies with different seasons. Average wind speed and total cloud cover become important meteorological factors affecting significant reduction of annual and seasonal sunshine time in Shouguang. |
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| Keywords: | sunshine time climate tendency rate mutation influencing factor |
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