相关实验视频
Updated: Jun 23, 2025

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In Situ Soil Moisture Sensors in Undisturbed Soils
Published on: November 18, 2022
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通过现场观测,遥感和建模,解开冬季的冰层成倍化或图形云
Paraskevi Georgakaki1, Anne-Claire Billault-Roux2, Romanos Foskinis1,3,4,5
1Laboratory of Atmospheric Processes and their Impacts (LAPI), School of Architecture, Civil & Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
概括
二次冰生产 (SIP) 显著影响地形云,影响降雨和水星流星分布. 这项研究揭示了SIP.
科学领域:
- 大气科学 大气科学
- 云物理 云物理
- 气象学 天气学
背景情况:
- 二次冰生产 (SIP) 是一种广泛的云过程,但在模型中表现不佳.
- 现有的模型显示混合相云冰含量和结构的偏差.
- SIP在地形云中的作用,特别是播种-养系统,需要进一步研究.
研究的目的:
- 为了研究SIP对水星流星垂直分布和orographic云中的降水的影响.
- 在多普勒光谱中识别SIP可观测的特征.
- 探索从雷达数据推断长期SIP事件的潜力.
主要方法:
- 由现场观测所限制的中等尺度模型模拟.
- 模拟与雷达数据的协同使用.
- 雷达模拟分析多普勒光谱属性.
主要成果:
- SIP对水流星的垂直分布和在种子-料或图形云中的降水产生了深刻的影响.
- 通过冰与冰碰撞的增强聚合和SIP创建了光谱双模.
- 在-20°C和-10°C之间的温度下观察到一个独特的多普勒光谱特征.
结论:
- SIP在形成形云系统中的降水特征方面发挥着至关重要的作用.
- 识别的多普勒光谱特征提供了一种检测SIP的方法.
- 这项研究开辟了使用全球云雷达档案的长期SIP监控的途径.
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