Abstract
The study of fog water chemical composition and the contribution of fog droplets to totalchemical deposition has become a relevant environmental subject over the past few years. Thispaper describes a fog water collector suitable for deposition network operation, due to itscomplete automation and to the facility of remote acquisition of sampling information. Samplingof fog droplets on teflon strings is activated by an optical fog detector according to a particularprotocol operated by a microprocessor controller. Multiple sample collection, alsomicroprocessor controlled, is possible with this instrument. The problem of fog droplet samplingin sub-freezing conditions is overcome using a sampling schedule implemented by themicroprocessor controller which alternates between sampling periods and stand-by periods duringwhich melting of the rime collected on the strings is allowed. Field tests on the reliability andreproducibility of the sampling operations are presented in the paper. Side by side operation of thefog collector with a PVM-100 fog liquid water content meter shows that the amount of water perunit volume of air collected by the sampling instrument is proportional to the fog liquid watercontent averaged over the period of an entire fog event.
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Fuzzi, S., Orsi, G., Bonforte, G. et al. An Automated Fog Water Collector Suitable for Deposition Networks: Design, Operation and Field Tests. Water, Air, & Soil Pollution 93, 383–394 (1997). https://doi.org/10.1023/A:1022108801083
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DOI: https://doi.org/10.1023/A:1022108801083