Experimental determination of layer cloud edge charging from cosmic ray ionisation

Experimental determination of layer cloud edge charging from cosmic ray ionisation
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宇宙射线电离层云边缘充电的实验测定

DOI:
10.1029/2010gl043605
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发表时间:
2010
影响因子:
5.2
通讯作者:
Nicoll K
Nicoll K
中科院分区:
地球科学1区
文献类型:
--
作者:
Nicoll K

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层状云边缘的云-空气过渡区是一个电活动区域,预测液滴充电。云边缘液滴充电是由宇宙射线产生的大气离子在全球电路中的垂直流动引起的。层状云边缘带电的实验确认在这里,通过电荷和液滴的测量范围内广泛的层过冷层状云,使用专门设计的静电传感器。在云边界较低的薄(<100 m)层中发现了高达35 pC m− 3的负空间电荷,与清晰的空气-云电导率梯度有关,与使用离子-气溶胶理论从测量的液滴浓度预测的空间电荷密切一致。这种由云滴携带的电荷水平足以影响云滴之间的碰撞过程。
The cloud‐air transition zone at stratiform cloud edges is an electrically active region where droplet charging has been predicted. Cloud edge droplet charging is expected from vertical flow of cosmic ray generated atmospheric ions in the global electric circuit. Experimental confirmation of stratiform cloud edge electrification is presented here, through charge and droplet measurements made within an extensive layer of supercooled stratiform cloud, using a specially designed electrostatic sensor. Negative space charge up to 35 pC m−3was found in a thin (<100 m) layer at the lower cloud boundary associated with the clear air‐cloud conductivity gradient, agreeing closely with space charge predicted from the measured droplet concentration using ion‐aerosol theory. Such charge levels carried by droplets are sufficient to influence collision processes between cloud droplets.
一种轻质气球携带的云电荷传感器。
DOI: 10.1063/1.3065090
发表时间: 2009
期刊: The Review of scientific instruments
影响因子: --
作者:
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通讯作者: R. Harrison
DOI: --
发表时间: 1956
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DOI: --
发表时间: 2005
期刊:
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DOI: 10.1098/rspa.2008.0009
发表时间: 2008
期刊: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子: --
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