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Position: Home > Articles > Analysis on Variation of Atmospheric Visibility in Dezhou Journal of Anhui Agricultural Sciences 2012 (31) 15338-15340

德州地区大气能见度变化特征分析

作  者:
张玉洁;高林;苑文华;马辉
单  位:
山东省气象局大气探测技术保障中心;山东省枣庄市气象局
关键词:
能见度;变化特征;德州地区
摘  要:
利用德州市气象局PWD20能见度仪观测的2009年的资料,分析了德州地区大气能见度的变化特征。结果表明,全年能见度日均值为8.55 km,最低值出现在07:00,最高值出现在16:00;四季能见度日变化总体趋势比较明显,冬季能见度最好,春季次之,夏季最差;能见度的季节变化特征是夏季最差,秋季次之,春季最好。低能见度主要发生在后半夜至凌晨,10:00以后出现概率明显减少,16:00以后又开始增加;低能见度日在夏、秋季出现较多,春季最少;夏、秋季以低能见度持续6 h以下的次数最多,冬季以持续8 h以上最多。
译  名:
Analysis on Variation of Atmospheric Visibility in Dezhou
作  者:
ZHANG Yu-jie et al(Atmospheric Observation Technology Support Center of Shandong Provincial Meteorological Bureau,Jinan,Shandong 250031)
关键词:
Visibility;Variation characteristics;Dezhou
摘  要:
Using PWD20 data from Dezhou Meteorological Bureau in 2009,the variation characteristics of atmospheric visibility were analyzed.As indicated by the results,the annual average visibility is 8.55km,the minimum value appears at 07:00,the maximum value appears at 16: 00.The daily variation of seasonal visibility has distinct features,the highest visibility appears in winter,next in spring,the lowest in summer.For the seasonal variation,the summer visibility is the lowest in a year,fall next and spring visibility is the highest.The frequency of low visibility occurs mainly at night and early morning,the frequency reduces obviously after 10:00,but from 16:00,it begin to increase.The days of low visibility are higher in summer and autumn than spring.In most case,the maintenance time of low visibility is less than 6 hours in summer and autumn,but in winter the maintenance time is more than 8 hours.

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