蒂斯Clima 3D立体声磁力计的性能:在雨雪事件期间的评估
Sabina Angeloni1, Elisa Adirosi1, Alessandro Bracci2
1National Research Council of Italy, Institute of Atmospheric Sciences and Climate (CNR-ISAC), 00133 Rome, Italy.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
三维立体 (3DS) 图像测流仪与激光降雨监测器 (LPM) 在雨雪分类和总降水方面表现出色的一致性. 然而,在混合相降水和小颗粒 (D < 1 mm) 方面存在差异.
科学领域:
- 气象学和大气科学.
- 水文学和降水科学.
- 仪器和测量科学. 仪器和测量科学.
背景情况:
- 绘制图像的气流量计提供了详细的水流星形状和下降速度数据,但成本昂贵.
- 能够捕捉粒子图像的商用3D立体声 (3DS) 光仪是新的,缺乏科学评估.
- 精确的流星分类至关重要,特别是对于固体和混合相降水.
研究的目的:
- 为了评估新的3D立体 (3DS) 成像失光仪的性能.
- 为了比较3DS与一个成熟的激光降雨监测器 (LPM).
- 分析水流星分类,粒子检测,落下速度和降水强度的差异.
主要方法:
- 在L'Aquila的CORE-LAQ活动中对3DS和LPM的实地比较.
- 分析数据的重点是水流星的分类,粒子数量,下降速度和降水强度.
- 对不同颗粒大小的终端速度与Gunn和Kinzer模型的一致性评估.
主要成果:
- 3DS和LPM在雨雪分类和总累积降水量方面达成了很好的协议.
- 在混合相 (雨/雪) 和冷 (冰) 降水中观察到较大的差异.
- 3DS检测的粒子比LPM多,小颗粒 (D<1毫米) 的性能差异更为明显.
- 这两种度计都低估了大于3毫米的粒子的终端速度.
结论:
- 3DS滴流量计是一个有前途的工具,在某些降水类型和整体积累方面显示出与LPM相比的良好性能.
- 需要进一步的研究来完善混合相和冷降水的分类算法.
- 3DS的图像捕捉能力支持定性形状分析,但分辨率限制了定量形状研究.
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