| 浙江省四季划分方法探讨 |
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| 引用本文： | 郁珍艳,吴利红,高大伟,樊高峰.浙江省四季划分方法探讨[J].气象科技,2014,42(3):474-481. |
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| 作者姓名： | 郁珍艳 吴利红 高大伟 樊高峰 |
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| 作者单位： | 浙江省气候中心， 杭州 310017;浙江省气候中心， 杭州 310017;浙江省气候中心， 杭州 310017;浙江省气候中心， 杭州 310017 |
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| 摘 要： | 利用1971—2011年浙江省63个站逐日气温资料,结合物候观测资料,经过统计计算及对比分析,发现运用候温法来判断换季时间常造成换季偏晚;运用气象学法和气候学法则会造成换季偏早,也很容易造成换季偏晚;各种方法造成的换季异常在各地区呈现出不同的特征。而分析各种方法造成换季时间异常的主要原因,基本都是由于期间几天的气温波动导致换季条件不满足造成的,波动持续时间一般不长,以3～5天为主,波动幅度一般也不大。因此充分考虑各种方法的优缺点,并考虑尽量减少气温波动的影响,总结出一套能够解决这些方法存在的问题,并且相对合理、适用于浙江地区的四季划分方法,得到的结果大大减少了其他方法偏早或由弱冷空气造成的偏晚现象,全省平均四季换季时间分别为3月16日、5月29日、9月30日、12月8日,换季明显偏早或偏晚的频次较其他方法明显减少,在全省各地区均比较符合物候现象。
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| 关 键 词： | 四季划分标准 物候 四季开始时间 |
| 收稿时间： | 2013/3/26 0:00:00 |
| 修稿时间： | 2013/12/6 0:00:00 |
Investigation of Methods for Season Division in Zhejiang Province |
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| Yu Zhenyan,Wu Lihong,Gao Dawei and Fan Gaofeng.Investigation of Methods for Season Division in Zhejiang Province[J].Meteorological Science and Technology,2014,42(3):474-481. |
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| Authors: | Yu Zhenyan Wu Lihong Gao Dawei and Fan Gaofeng |
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| Institution: | Zhejiang Climate Center, Hangzhou 310017;Zhejiang Climate Center, Hangzhou 310017;Zhejiang Climate Center, Hangzhou 310017;Zhejiang Climate Center, Hangzhou 310017 |
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| Abstract: | Using the daily temperature data from 63 stations from 1971 to 2011 over Zhejiang Province,combining with the phenology data,statistical calculations and comparative analysis are conducted.The results show that the seasons often start later by the method of pentad temperature and earlier or later with the methods of meteorology and climatology; the abnormal season start dates caused by different methods exhibit different characteristics in various regions.The main reasons for the abnormal season start dates are analyzed,and the results indicate that abnormal cases occur mainly when the temperature fluctuation of several days leads to the unsatisfied conditions of season change,but the lasting time of the fluctuations is not long generally,mainly in 3 to 5 days,and the fluctuation range is not great.So considering fully the advantages and disadvantages of various methods and the influence of temperature fluctuation,a method is presented,which is reasonable relatively and applicable to Zhejiang Province and can solve the problems of these methods.The provincial average start dates of seasons are 16 March,29 May,30 September,and 8 December.The frequency of seasons starting earlier or later reduced obviously,compared with other methods,and the result is more in line with the phenology in each region. |
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| Keywords: | season division standard phenology season start date |
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