English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We evaluate a direct photographic method to measure droplet size distribution (DSD) in fog using an instrument, consisting of a digital camera and a stroboscope, designed for onboard use in a hot air balloon, which is safer than other aircrafts in fog. This method allows observation of fog droplets without mechanical suction or impaction. Drops of diameter 5-100 µ m could be imaged with a relative standard deviation of 20-21%. Extinction coefficients derived from the DSD show good agreement with those derived from the visibility. The feasibility of the instrument attached to a hot air balloon was validated in a field observation, demonstrating that the direct photographic method is feasible for determining fog DSD.

Direct Photographic Method for Measuring Droplet Size Distribution in Fog