中国海洋大学学报（自然科学版）
中國海洋大學學報（自然科學版）
중국해양대학학보（자연과학판）
PERIODICAL OF OCEAN UNIVERSITY OF CHINA
2010年
1期
10-16
,共7页
光学厚度%天空辐射计%气溶胶指数%水平能见度%浑浊度系数%消光系数
光學厚度%天空輻射計%氣溶膠指數%水平能見度%渾濁度繫數%消光繫數
광학후도%천공복사계%기용효지수%수평능견도%혼탁도계수%소광계수
aerosol optical depth%sky radiometer%aerosol index%horizontal visibility%turbidity coefficient%extinction coefficient
由多波段天空辐射计观测的太阳直接辐射和散射辐射计算得到2006年春季22个晴天的大气气溶胶光学厚度(AOD),利用OMI(臭氧监测仪)的气溶胶指数(AI)线性插值得到相应22 d的气溶胶指数,说明AOD与AI具有较好的相关关系,并拟合出两者的线性关系式.分析AOD与实测水平能见度的关系,说明春季在少云或无云天气,大气中气溶胶含量高是导致能见度水平下降的主要原因.根据2个不同的能见度公式,分别由浑浊度系数和消光系数来计算22 d的水平能见度,并与实际观测值做相关,得到相关系数分别为0.764,0.760.当气溶胶标高取1.3 km时,由消光系数计算得到的水平能见度整体小于实测水平能见度;由浑浊度系数计算得到的能见度有11 d大于实测水平能见度,另外11 d小于s实测水平能见度.
由多波段天空輻射計觀測的太暘直接輻射和散射輻射計算得到2006年春季22箇晴天的大氣氣溶膠光學厚度(AOD),利用OMI(臭氧鑑測儀)的氣溶膠指數(AI)線性插值得到相應22 d的氣溶膠指數,說明AOD與AI具有較好的相關關繫,併擬閤齣兩者的線性關繫式.分析AOD與實測水平能見度的關繫,說明春季在少雲或無雲天氣,大氣中氣溶膠含量高是導緻能見度水平下降的主要原因.根據2箇不同的能見度公式,分彆由渾濁度繫數和消光繫數來計算22 d的水平能見度,併與實際觀測值做相關,得到相關繫數分彆為0.764,0.760.噹氣溶膠標高取1.3 km時,由消光繫數計算得到的水平能見度整體小于實測水平能見度;由渾濁度繫數計算得到的能見度有11 d大于實測水平能見度,另外11 d小于s實測水平能見度.
유다파단천공복사계관측적태양직접복사화산사복사계산득도2006년춘계22개청천적대기기용효광학후도(AOD),이용OMI(취양감측의)적기용효지수(AI)선성삽치득도상응22 d적기용효지수,설명AOD여AI구유교호적상관관계,병의합출량자적선성관계식.분석AOD여실측수평능견도적관계,설명춘계재소운혹무운천기,대기중기용효함량고시도치능견도수평하강적주요원인.근거2개불동적능견도공식,분별유혼탁도계수화소광계수래계산22 d적수평능견도,병여실제관측치주상관,득도상관계수분별위0.764,0.760.당기용효표고취1.3 km시,유소광계수계산득도적수평능견도정체소우실측수평능견도;유혼탁도계수계산득도적능견도유11 d대우실측수평능견도,령외11 d소우s실측수평능견도.
Aerosol optical depth(AOD) was calculated by using the direct sun radiance and scatter data collected by a multi-wavelength sky radiometer during the 22 sunny days in spring 2006. The corresponding aerosol index(AI) was obtained by Linear Interpolation Algorithm from OMI aerosol index. A good linear relationship between AOD and AI was found, and the linear function was then explored. By analyzing AOD and horizontal visibility, a conclusion was given: the high concentration of aerosol was the dominant factor that caused the low visibility in a cloud-free or partly cloudy weather. The horizontal visibilities during the 22 days were calculated with the turbidity coefficient and extinction coefficient separately, based on two different visibility functions. The results showed that the horizontal visibilities were highly correlated with the observed data, and the correlation coefficients were 0.764, 0.760, respectively. When the aerosol scale height was given value 1.3 km, the visibility values calculated with extinction coefficient were smaller than the observed data during the whole sampling time;whereas the visibilities calculated with turbidity coefficient had higher values for 11 days compared with the observed data and lower values for the rest of the time.
