Aircraft-based observations of ice concentrations in a midlatitude mixed-phase stratiform cloud system with embedded convection

被引：8

作者：

Hou, Tuanjie ^{[1
]}

Chen, Baojun ^{[2
]}

Zhou, Xu ^{[2
]}

Zhao, Chuanfeng ^{[3
]}

Feng, Qiujuan ^{[4
]}

Yan, Fei ^{[5
]}

Zhou, Wei ^{[6
]}

Cui, Yi ^{[5
]}

Du, Yuanmou ^{[6
]}

Li, Zhenghao ^{[5
]}

Zhao, Delong ^{[6
]}

Ma, Xincheng ^{[6
]}

机构：

[1] Chinese Acad Sci, Inst Atmospher Phys, Lab Cloud Precipitat Phys & Severe Storms, Beijing 100029, Peoples R China

[2] CMA Weather Modificat Ctr, CMA Cloud Precipitat Phys & Weather Modificat Key, Beijing 100081, Peoples R China

[3] Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing 100871, Peoples R China

[4] Shanxi Artificial Precipitat Enhancement & Lightni, Taiyuan 030032, Peoples R China

[5] Hebei Prov Weather Modificat Ctr, Shijiazhuang 050021, Peoples R China

[6] Beijing Weather Modificat Ctr, Beijing 100089, Peoples R China

来源：

ATMOSPHERIC RESEARCH | 2023年 / 281卷

基金：

中国国家自然科学基金;

关键词：

Aircraft measurements; Mixed-phase; Liquid water content; Ice concentrations; MICROPHYSICAL PROPERTIES; PARTICLES; PRECIPITATION; RADAR; MECHANISMS; MIDLEVEL; IMPACTS; LIQUID;

D O I：

10.1016/j.atmosres.2022.106471

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

This study analyzed in situ measurements of a mixed-phase stratiform cloud system observed over northern China (similar to 40 N, 115 E) on 16 June 2021 during two King-350 aircraft penetrations at temperatures between -4 and - 15 degrees C. Through a comparison of specific regions of mixed-phase and all ice, we investigated the inhomogeneity of ice particle concentrations and secondary ice production processes associated with rime splintering and collisional fragmentation. A multilayer structure of supercooled liquid water was observed, including extremely low liquid water content at approximately 7.5 km and a relatively higher liquid water content of 0.2 to 0.4 g m(-3) at 6 km. The cloud was horizontally inhomogeneous due to the presence of embedded convection. Ice particle concentrations at temperatures between -4 and - 8 degrees C varied from <10 L-1 to 80 L-1 in stratiform regions, and up to over 200 L-1 in embedded convective regions. There was evidence for the Hallett-Mossop process to account for secondary ice production in column and needle growth regimes. Collisional fragmentation may also occur in column-growth regimes of embedded convection.

引用

页数：10

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