Long-term in situ measurements of the cloud-precipitation microphysical properties over East Asia
Long-term in situ measurements of the cloud-precipitation microphysical properties over East Asia
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DOI：
10.1016/j.atmosres.2011.07.002
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发表时间：
2011-10
影响因子：
5.5
通讯作者：
Jinfang Yin;Donghai Wang;G. Zhai
中科院分区：
文献类型：
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作者：
Jinfang Yin;Donghai Wang;G. Zhai
利用1960-2008年的现场资料，建立了云降水微物理特征数据库。在数据库分析的基础上，给出了气溶胶、冰核、云滴、雾、冰晶、雪晶和雨滴的主要特征。此外，还进行了统计分析。结果表明，直径大于0.3μm的总平均气溶胶浓度为166.9 cm−3，在−20°C时，IN浓度的最大平均值可达78.9L−1，总平均值为22.9L−1。此外，积云的总平均云滴数浓度(NC)较高，为907.7 cm−3，层状云的Nc为120.9 cm−3；积云(层状云)的平均液态水含量为0.875(0.140)gm−3，峰值为2.000(0.520)gm−3。指数分布和伽马分布均适用于层状云雨滴的拟合。将伽马尺度分布应用于对流云和混合云(层状和积云)雨滴的拟合，得到了较好的一致性。指数尺寸分布对冰晶和雪晶的拟合均适用。
A database of cloud-precipitation microphysical characteristics is established, using in situ data during 1960–2008. Main features of aerosol, ice nuclei (IN), cloud droplet, fog, ice crystal, snow crystal, and raindrop are presented based on the analyses of the database. In addition, a statistical analysis has been performed. The results show that the overall average aerosol concentration in diameter greater than 0.3μm is 166.9cm−3and the average maximum values of IN concentration can reach 78.9L−1at −20°C, with an overall average of 22.9L−1. In addition, cumuliform clouds have higher overall average cloud droplet number concentration (Nc) of 907.7cm−3, and that of stratiform clouds, is 120.9cm−3; cumuliform clouds (stratiform clouds) have an average liquid water content (LWC) of 0.875 (0.140) gm−3, with a peak value of 2.000 (0.520) gm−3. The gamma size distributions are shown to be suitable for most of the observed spectra in stratiform clouds. Both the exponential and gamma size distributions are applicable to fit the raindrops originating from stratiform clouds. Good agreement is obtained when the gamma size distribution is applied to fit the raindrops originating from both convective and mixing (stratiform and cumuliform) clouds. The exponential size distributions are suitable for both ice crystal and snow crystal fitting.