新疆层云和层积云冰粒子属性的季节变化

干旱区地理 ›› 2017, Vol. 40 ›› Issue (3): 589-597.

新疆层云和层积云冰粒子属性的季节变化

王昀¹, 王旭², 赵笑颜¹, 马禹³, 王式功¹, 陈勇航⁴

1 兰州大学大气科学学院, 甘肃省干旱与减灾重点实验室, 甘肃兰州 730000;
2 新疆维吾尔自治区人工影响天气办公室, 新疆乌鲁木齐 830002;
3 新疆维吾尔自治区气候中心, 新疆乌鲁木齐 830002;
4 东华大学环境科学与工程学院, 上海 201620

收稿日期:2016-11-16 修回日期:2017-02-19 出版日期:2017-05-25
通讯作者: 马禹(1967-),女,辽宁人,硕士,研究员,主要从事气候变化研究.Email:rainhorse6709@163.com
作者简介:王昀(1990-),女,河南洛阳人,博士研究生,主要从事大气物理研究.Email:yunwang@vip.163.com
基金资助:
新疆维吾尔自治区人民政府重大专项《新疆吐鲁番哈密地区空中云水资源开发利用》课题（降水现象及其历时蕴含的人工增水潜力分析、新疆三大山系水汽总量的遥感监测与评估）资助

Seasonal variations of microphysical properties of ice particles for stratus and stratocumulus in Xinjiang

WANG Yun¹, WANG Xu², ZHAO Xiao-yan¹, MA Yu³, WANG Shi-gong¹, CHEN Yong-hang⁴

1 College of Atmospheric Sciences of Lanzhou University, Key Laboratory of Drought and Disaster Mitigation in Gansu Province, Lanzhou 730000, Gansu, China;
2 Xinjiang Weather Modification Office, Urumqi 830002, Xinjiang, China;
3 Climatic Center of Xingjiang, Urumqi 830002, Xinjiang, China;
4 College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

Received:2016-11-16 Revised:2017-02-19 Online:2017-05-25

摘要/Abstract

摘要： 利用CloudSat 卫星资料，选取冰粒子的等效半径（IER）、数浓度（INC）、含水量（IWC），统计分析了层云、层积云微物理量的垂直分布和季节变化。层云/层积云小粒子（0～50 μm）、中等粒子（50～80 μm）、大粒子（≥80 μm）出现频率分别为18.7%/16.3%、77.6%/62.6%、3.7%/21.2%。在IER 垂直分布上，层云小、中等粒子在云层中部出现较多，层积云小粒子在云层上部出现较多，中等、大粒子在云层中部出现较多。层云/层积云INC低值段（0～50 L^-1）、中值段（50～100 L^-1）、高值段（≥100 L^-1）出现频率分别为90.1%/76.5%、9.6%/19.5%、0.3%/4.1%。在INC垂直分布上，层云低、中值段在云层中部出现较多，层积云低、中值段分别在云层中部、上部出现较多。层云/层积云IWC低值段（0～50 mg·m^-3）、中值段（50～100 mg·m^-3）、高值段（≥100 mg·m^-3）出现频率分别为96.7%/82.8%、3.2%/13.4%、0.1%/3.7%。在IWC垂直分布上，层云低值段在云层中部出现较多，层积云低、中值段分别在云层中部、上部出现较多。

关键词: CloudSat, 层云, 层积云, 微物理属性, 季节变化

Abstract: The vertical distributions and seasonal variations of microphysical quantities for stratus and stratocumulus were analyzed in term of ice particle equivalent radius(IER),the number concentration of ice particles (INC),ice water content(IWC)by using CloudSat satellite data. The results were of great significance for carrying out artificial precipitation operation. The occurrence frequencies of the small particles(0-50 μm),medium particles(50-80 μm),large particles(over 80 μm)in stratus(stratocumulus)were 18.7%(16.3%),77.6% (62.6%)and 3.7%(21.2%),respectively. In the vertical distribution of IER,small and medium particles distributed over the stratus and more frequently appeared in the middle parts,while large particles mainly distributed in the bottom parts. Meanwhile,for stratocumulus,except for winter,the distribution of IER were observed over the clouds;more small particles appeared in the upper part,more medium and large particles appeared in the middle parts. In the vertical direction,the stratification for stratus was obvious while it for stratocumulus was not obvious. The occurrence frequencies of ice number concentration(INC)in low value(0-50 L^-1),median value (50-100 L^-1)and high value(more than 100 L^-1)for stratus(stratocumulus)were 90.1%(76.5%),9.6% (19.5%)and 0.3%(4.1%),respectively. In the vertical distributions of INC,the low value of INC distributed over the stratus,and the distributions of medium value was in middle and upper parts while the distributions of low and median value appeared more frequently in middle parts. At the same time,the distribution of low value of INC was over the stratocumulus,the distribution of medium value was in middle and upper parts while the distribution of low and median value of INC appeared more frequently in middle and upper part. The occurrence frequencies of ice water content(IWC)in low value(0-50 mg·m^-3),median value(50-100 mg·m^-3)and high value( more than 100 mg·m^-3)for stratus(stratocumulus)were 96.7%(82.8%),3.2%(13.4%),0.1%(3.7%),respectively. In the vertical distributions of IWC,the low value of IWC distributed over the stratus,and the distributions of medium value of IWC was in middle parts,the distribution of low value of IWC appeared more frequently in middle parts. At the same time,the distributions of low value and medium value of IWC were over the stratocumulus, high value was in the upper parts,low and median values appeared more frequently in the middle and upper parts.

Key words: CloudSat, stratus, stratocumulus, microphysical property, seasonal change

中图分类号:

P426.3

王昀, 王旭, 赵笑颜, 马禹, 王式功, 陈勇航. 新疆层云和层积云冰粒子属性的季节变化[J]. 干旱区地理, 2017, 40(3): 589-597.

WANG Yun, WANG Xu, ZHAO Xiao-yan, MA Yu, WANG Shi-gong, CHEN Yong-hang. Seasonal variations of microphysical properties of ice particles for stratus and stratocumulus in Xinjiang[J]. , 2017, 40(3): 589-597.

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