Abstraction of Atmospheric Humidity

Wilderer, P.A.; Davydova, E. S.; Saveliev, Y.

doi:10.1016/b978-0-444-53199-5.00079-8

Cited by 2 publications

(1 citation statement)

References 69 publications

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“…Charging a droplet until the electrical force generated exceeds the droplet's surface tension, will lead to physical disruption and fragmentation (Duft et al., 2003; Rayleigh, 1882). Modifying charges in clouds has been attempted by releasing corona ions upwards from the surface, for investigation of cloud electrification (Vonnegut et al., 1962) and weather modification (Wilderer et al., 2011). Charge release can now be achieved into clouds and fogs from above and within, using uncrewed aerial vehicles (UAVs) (Harrison et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

Ionic Charge Emission Into Fog From a Remotely Piloted Aircraft

Harrison

Nicoll

Marlton

et al. 2022

Geophysical Research Letters

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Water droplets in air occur commonly in clouds and fogs. The droplets act to remove the molecular cluster-ions generated by radioactivity and cosmic rays. Through this attachment process, droplets acquire a net charge (Gunn, 1954). This can influence their behavior, for example, through modifying collisions and evaporation (Harrison & Ambaum, 2008;Khain et al., 2004). Introducing charge artificially may therefore provide a method of influencing natural droplet systems, with potential applications to fog dispersal, rainfall enhancement or modifying cloud reflectivity (Harrison et al., 2015). In situ investigation through direct experimentation on a natural fog is described here, using an aircraft for charge release.Clouds and fogs are sensitive systems where droplet growth rates and size distributions are important properties. Small changes, for example, in droplet sizes can lead to cloud brightening (Hobbs et al., 2000). Electrical influences on droplet behavior have long been recognized (Strutt, 1879), with recent modeling showing that charge-enhanced collection hastens droplet growth to raindrop sizes (Ambaum et al., 2022;Guo & Xue, 2021). Charging a droplet until the electrical force generated exceeds the droplet's surface tension, will lead to physical disruption and fragmentation (Duft et al., 2003;Rayleigh, 1882). Modifying charges in clouds has been attempted by releasing corona ions upwards from the surface, for investigation of cloud electrification (Vonnegut et al., 1962) and weather modification (Wilderer et al., 2011). Charge release can now be achieved into clouds

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