干旱气象
榦旱氣象
간한기상
GANSU METEOROLOGY
2014年
5期
733-737
,共5页
郑州机场%航空气象%低能见度%特征
鄭州機場%航空氣象%低能見度%特徵
정주궤장%항공기상%저능견도%특정
Zhengzhou Airport%aviation meteorology%low visibility%characteristics
利用郑州机场近9 a（2004～2012年）地面气象观测资料，分析了能见度的年、季节和日变化特征，并统计了低能见度出现的天数。结果表明：郑州机场年平均能见度仅为4219 m，平均每年上升约69 m，秋季上升速率最快，冬季最慢，出现小于1500 m、800 m和600 m能见度的天数均呈下降趋势；能见度月际变化特征十分明显，春季平均能见度最好，秋季和冬季较差，低能见度出现的天数以秋、冬季较多，春、夏季较少；日变化特征除夏季外，春、秋、冬季能见度都呈现双峰双谷型变化，能见度16时最佳，凌晨4时最差。
利用鄭州機場近9 a（2004～2012年）地麵氣象觀測資料，分析瞭能見度的年、季節和日變化特徵，併統計瞭低能見度齣現的天數。結果錶明：鄭州機場年平均能見度僅為4219 m，平均每年上升約69 m，鞦季上升速率最快，鼕季最慢，齣現小于1500 m、800 m和600 m能見度的天數均呈下降趨勢；能見度月際變化特徵十分明顯，春季平均能見度最好，鞦季和鼕季較差，低能見度齣現的天數以鞦、鼕季較多，春、夏季較少；日變化特徵除夏季外，春、鞦、鼕季能見度都呈現雙峰雙穀型變化，能見度16時最佳，凌晨4時最差。
이용정주궤장근9 a（2004～2012년）지면기상관측자료，분석료능견도적년、계절화일변화특정，병통계료저능견도출현적천수。결과표명：정주궤장년평균능견도부위4219 m，평균매년상승약69 m，추계상승속솔최쾌，동계최만，출현소우1500 m、800 m화600 m능견도적천수균정하강추세；능견도월제변화특정십분명현，춘계평균능견도최호，추계화동계교차，저능견도출현적천수이추、동계교다，춘、하계교소；일변화특정제하계외，춘、추、동계능견도도정현쌍봉쌍곡형변화，능견도16시최가，릉신4시최차。
The interannual,seasonal and diurnal variation of visibility and low visibility days were analyzed based on the observed mete-orological data from 2004 to 2012 at Zhengzhou Airport.Results show that the annual average visibility was only 4 219 m,which pres-ented a rising trend with the rate of 69 meters per year,and in fall it increased most and least in winter.The days of visibility less than 1 500 m,800 m and 600 m showed a downward trend at the airport.Monthly variation of visibility was very obvious,and the average visibility in spring was best and then in summer,low visibility days appeared more in autumn and winter but less in spring and sum-mer.Diurnal variation of visibility appeared two peak and two valley in spring,autumn and winter,and at 16 :00 the visibility was best and worst at 04:00.
