CAJ | 학술논문

在UWyo单组分气溶胶的绝热气块分档云模式基础上,发展了多种化学组分气溶胶的绝热气块分档云模式。利用2006年春季华北地区地面气溶胶分级采样的离子成分分析数据和同时段高空气溶胶、云微物理飞机观测资料,研究了气溶胶混合状态对暖云微物理特征的影响。模拟结果表明,华北地区气溶胶内部混合比外部混合有利于增加云凝结核数浓度、降低气块水汽最大饱和比、增加云滴数浓度。气溶胶的混合状态不同,形成的云滴谱的特征差异较大,主要体现在云滴谱的平均尺度和峰值的突出程度;云滴谱相对离散度在0.3附近变化,且随着云滴数浓度的增加,云滴谱相对离散度呈现减小的趋势。气溶胶混合状态能够影响暖云微物理特征,从而影响大气辐射和降水过程,在天气和气候变化的研究中应予以关注。
재UWyo단조분기용효적절열기괴분당운모식기출상,발전료다충화학조분기용효적절열기괴분당운모식。이용2006년춘계화북지구지면기용효분급채양적리자성분분석수거화동시단고공기용효、운미물리비궤관측자료,연구료기용효혼합상태대난운미물리특정적영향。모의결과표명,화북지구기용효내부혼합비외부혼합유리우증가운응결핵수농도、강저기괴수기최대포화비、증가운적수농도。기용효적혼합상태불동,형성적운적보적특정차이교대,주요체현재운적보적평균척도화봉치적돌출정도;운적보상대리산도재0.3부근변화,차수착운적수농도적증가,운적보상대리산도정현감소적추세。기용효혼합상태능구영향난운미물리특정,종이영향대기복사화강수과정,재천기화기후변화적연구중응여이관주。
An adiabatic bin-sized cloud parcel model is developed by incorporating the multi-chemical-component（MCC） aerosol effects into the UWyo single-chemical-component（SCC） parcel model.The effects of aerosols mixing state on the warm cloud microphysics in North China are investigated by using the model based on the data of ion component analysis of ground aerosol grade sampling and the aerosol and cloud microphysics observation in high latitude in North China in spring 2006.It is found that in North China the aerosol internal mixing increases the CCN number concentration and the cloud droplet number concentration（CDNC） and decreases the maximum saturation ratio of water vapor in air parcel.It is also shown that the different aerosols mixing states in North China can affect the cloud droplet spectra（CDS） characteristics especially the CDS＇s average size and the peak value prominence degree;the relative dispersion value of CDS is near 0.3,and it decreases with increasing CDNC.It is indicated that aerosol mixing state can influence the microphysics of warm clouds,and thus affects atmospheric radiation and precipitation.This should attract more attentions in weather and climate change research in the future.