| 1951—2018年衢州市椪柑采摘期连阴雨天气变化特征 |
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| 引用本文： | 汪晨,毛程燕,龚理卿,王健疆. 1951—2018年衢州市椪柑采摘期连阴雨天气变化特征[J]. 气象与环境学报, 2021, 37(2): 71-76. DOI: 10.3969/j.issn.1673-503X.2021.02.010 |
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| 作者姓名： | 汪晨 毛程燕 龚理卿 王健疆 |
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| 作者单位： | 衢州市气象局,浙江 衢州324000 |
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| 基金项目： | 浙江省气象科技计划项目(2020YB20);衢州市科技计划指导性项目(2020091) |
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| 摘 要： | 基于1951—2018年衢州市椪柑采摘期降水量、雨日、日照时数、相对湿度等逐日气象资料,应用统计分析和小波分析方法,分析椪柑采摘期连阴雨天气变化特征及其大气环流背景.结果表明:1951—2018年衢州椪柑采摘期连阴雨日数、次数和强度呈略微增加趋势、滑动3d无雨次数呈减少趋势;滑动3d无雨次数存在明显的5a、7a和15a...
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| 关 键 词： | 椪柑采摘期 连阴雨 大气环流背景 |
| 收稿时间： | 2020-05-12 |
Change characteristics of continuous rain during the picking period of ponkan in Quzhou from 1951 to 2018 |
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| Chen WANG,Cheng-yan MAO,Li-qing GONG,Jian-jiang WANG. Change characteristics of continuous rain during the picking period of ponkan in Quzhou from 1951 to 2018[J]. Journal of Meteorology and Environment, 2021, 37(2): 71-76. DOI: 10.3969/j.issn.1673-503X.2021.02.010 |
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| Authors: | Chen WANG Cheng-yan MAO Li-qing GONG Jian-jiang WANG |
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| Affiliation: | Quzhou Meteorological Service, Quzhou 324000, China |
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| Abstract: | Studying the continuous rain characteristics and atmospheric circulation background during the picking period of ponkan in Quzhou can provide a scientific guide for picking ponkan on time.Based on the daily weather data such as precipitation, rainy days, sunshine hours, relative humidity, etc., this study analyzed the change characteristics of the continuous rain and atmospheric circulation background during the picking period of ponkan from 1951 to 2018 using the statistical analysis and wavelet analysis methods.The results show that the number of consecutive rainy days, frequency, and intensity of rain during the picking period of Quzhou ponkans lightly increase, and the number of rainless days with a 3-day sliding decreases and shows the characteristics of 5 years and 7 years inter-annual and 15 years inter-decadal cyclical changes, and the cycles present a shortening trend.In the strong continuous rainy years during the ponkan picking period, a meridional circulation with two heights and one low prevails over the Asia-Europe region.Under such circumstances, strong cold air moves southward frequently and eastward slowly, and the southerly warm and humid airflow is active, which causes a convergence of warm and cold air in the middle and lower reaches of the Yangtze River for a long time. |
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| Keywords: | Ponkan picking period Continuous rain Atmospheric circulation background |
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