Response of cloud microphysics to aircraft-based glaciogenic seeding of supercooled clouds in North China

IF 4.4 2区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES

Atmospheric Research Pub Date : 2025-09-22 DOI:10.1016/j.atmosres.2025.108502

Xiaobo Dong , Baojun Chen , Jing Yang , Rong Mai

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引用次数: 0

Abstract

Utilizing airborne measurements to investigate the response of microphysics to glaciogenic cloud seeding is instrumental in understanding and evaluating the seeding effect. In this study, the changes in microphysical characteristics of a supercooled liquid cloud induced by aircraft-based cloud seeding is analyzed. The data was collect in North China on Dec. 12, 2023, by using an S-band ground-based weather radar and airborne in-situ measurements. The results show that after cloud seeding, the cloud droplet number concentration and the supercooled liquid water content decreased by 48.5 % and 28.5 %, respectively, while the ice crystal number concentration increased from 0 to 100.8 L⁻¹ on average, leading to a significant broadening of the ice particle spectrum. The ground-based weather radar observed distinct radar echo bands after the cloud seeding was completed. The enhanced radar reflectivity lasted for approximately 30 min before dissipation. A comparative analysis of five previous aircraft-based glaciogenic cloud seeding experiments in the same region revealed that the cloud seeding effect is sensitive to seeding-level temperature, cloud droplet number concentration, and supercooled liquid water content.

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云微物理对华北过冷云飞机造冰播种的响应

利用航空测量研究微物理对冰川云播种的响应，有助于理解和评价冰川云播种的效果。本文分析了飞机人工增云对过冷液云微物理特性的影响。该数据于2023年12月12日在华北地区通过s波段地面气象雷达和机载现场测量收集。结果表明：播云后，云滴数浓度和过冷液态水含量分别下降48.5%和28.5%，而冰晶数浓度平均从0 L−1增加到100.8 L−1，导致冰粒谱明显拓宽；播云完成后，地面气象雷达观测到明显的雷达回波带。雷达反射率增强持续约30分钟后消散。通过对同一地区5次飞机冰期播云试验的对比分析，发现播云效果对播层温度、云滴数浓度和过冷液态水含量敏感。

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来源期刊

Atmospheric Research 地学-气象与大气科学

CiteScore

9.40

自引率

10.90%

发文量

460

审稿时长

47 days

期刊介绍： The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.