山东诸城市天气现象变化趋势分析

Analysis on the Climate Change Trend in Zhucheng of Shandong Province

[目的]分析诸城市历年天气现象的变化特征及其影响。[方法]利用诸城市1958～2011年的逐日天气现象资料,采用曲线图、趋势图、频率等方法,对近54年诸城市出现的天气现象总日数、年平均日数、频率等分布特征进行了统计分析。[结果]近54年诸城市共出现天气现象19种,总日数32 398 d;雪暴、烟幕、沙尘暴、极光、龙卷、尘卷风和冰针7种天气现象从未出现,露、轻雾、结冰、雨、霜、雾、雷暴、积雪、雪、大风10种天气现象出现较多,吹雪、飑、雨凇、冰雹、雾凇、霾、扬沙、闪电、浮尘9种天气现象出现较少;轻雾、雨等7种天气现象出现天数总体均呈递增趋势,露、结冰等12种天气现象出现天数均呈递减趋势。[结论]该研究为当地具体预报起到指导作用,更好地为农服务提供科学依据。

[ Objective ] To study the climate changing characteristics and influence in Zhucheng. [ Method] According to the daily meteorological data of Zl^ucheng from 1958 to 2011 ,the total days,annual average days,frequency,etc, of each weather phenomenon were statistically analyzed with curves,trend map and frequency. [Result] 19 types of weather phenomena appeared in Zhucheng for a total of 32 398 days during the 54 years. Seven types of weather,including snowstorm, smoke, dust storm, aurora borealis, tornadoes, dust tornado and ice needles, never appeared. Ten types, including dew, mist, ice, rain, frost, fog, thunderstorms, large snow, snow and high w/nds, occurred rarely ; nine types, including snow drift , squall , glaze , hail , rime , haze , blowing sand,lightning and dust,appeared very less; the days with mist,rain and other five types of weather presented a gradual increasing tendency; while the days with dew,ice and other ten types of weather presented a decreasing tendency. [ Conclu- sion] The study guided the weather forecast in Zhucheng and provided scientific services for its agriculture.