華東地區(qū)夏季云微物理結(jié)構(gòu)的飛機(jī)觀測(cè)分析

doi:10.3969/2018jms.0024

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華東地區(qū)夏季云微物理結(jié)構(gòu)的飛機(jī)觀測(cè)分析
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                        10.3969/2018jms.0024
                    
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中圖分類號(hào):P426.51
基金項(xiàng)目:國(guó)家自然科學(xué)基金資助項(xiàng)目（41590873；91644224；41705118）；江蘇省高等學(xué)校自然科學(xué)研究面上項(xiàng)目（17KJB170010）（KYLX_0835）

Aircraft measurements of microphysical properties of clouds over eastern China in summer

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利用飛機(jī)搭載云粒子探頭對(duì)2014年8月12-28日華東地區(qū)云的空間分布特征進(jìn)行了探測(cè)，分析了云的垂直結(jié)構(gòu)和水平分布特征，結(jié)合同時(shí)探測(cè)的氣溶膠數(shù)據(jù)，探討了云與氣溶膠的相互作用關(guān)系。探測(cè)結(jié)果表明，安徽地區(qū)層狀云云滴平均數(shù)濃度在24~297 cm^-3，液態(tài)含水量在0.04~0.13 g·m^-3，云滴數(shù)濃度隨云底高度升高而減小，云滴粒徑則隨云底升高而增大。層積云（Sc）和雨層云（Ns）的云滴數(shù)濃度在云底最高，隨高度上升濃度下降，液態(tài)含水量在云中部最高，云頂和云底處較低，高層云（As）云滴數(shù)濃度和液態(tài)含水量峰值均出現(xiàn)在云中上部。云的水平分布不均勻，云粒子雙峰分布區(qū)域?qū)?yīng)液態(tài)含水量高值區(qū)。Ns對(duì)氣溶膠清除作用明顯，清除方式以活化清除為主、碰并清除為輔。

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A set of aircraft measurements during August 12 to 28, 2014 over Anhui Province were conducted to investigate the cloud spatial distribution characteristics over eastern China, the vertical and horizontal distributions of clouds, and the interactions between aerosol and clouds. The results show that the cloud drops concentration were in the range of 24-297 cm^-3 and liquid water content was 0.04-0.13 g·m^-3. The cloud drops concentration decreased with cloud base height, while cloud mean diameter increased with the cloud base height. Cloud drops were concentrated in the bottom of stratocumulus (Sc) and nimbostratus (Ns), and the cloud drops concentration decreased with the altitude. The liquid water content increased first in Sc and Ns, and then decreased with the altitude. The peak of liquid water content was in the middle of cloud. In altostratus(As), the peak of cloud drops concentration and liquid water content were both in the middle. The horizontal distribution of clouds changed a lot. High liquid water content appeared at the bi-model part of the cloud distribution. Aerosol removal process was obvious in Ns. The cloud activation process removed a large number of aerosol particles and the coagulation process removed a small amount of aerosol as well.

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郝囝,陳景華,濮梅娟,周學(xué)東,呂藝影.華東地區(qū)夏季云微物理結(jié)構(gòu)的飛機(jī)觀測(cè)分析.氣象科學(xué),2019,39(4):524-531 HAO Jian, CHEN Jinghua, PU Meijuan, ZHOU Xuedong, LYU Yiying. Aircraft measurements of microphysical properties of clouds over eastern China in summer. Journal of the Meteorological Sciences,2019,39(4):524-531

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收稿日期:2018-02-22
最后修改日期:2018-02-27
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在線發(fā)布日期: 2019-08-31
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