Calculated and measured values of liquid water content in clean and polluted environments

• Published in: Studia Geophysica et Geodaetica
• Main Authors: Fišák, J., Řezáčová, D., Mattanen, J.
• Format: Article in Journal/Newspaper
• Language: unknown
• Subjects: liquid water content; visibility; air pollutant; fog/cloud water; Sodankylä
• Online Access: https://kramerius.lib.cas.cz/view/uuid:79443466-92eb-4efd-9739-20998bc33588; https://doi.org/10.1007/s11200-006-0006-z

The relationship between liquid water content (LWC) and visibility (VIS) in a fog was examined by a field measurement of LWC values at a clean location of the meteorological observatory Sodankylä (Finland) and in a polluted region at the meteorological observatory Milešovka (Czech Republic). Furthermore, the use of a simple regression fog model to determine LWC from VIS is examined by comparing well-known relationships with the measurement results. The results show that the verbal characterization of environment (clean, mild polluted, polluted) is insufficient to calculate the LWC values from visibility. It is necessary to establish an additional criterion based on quantitative fog characteristics or to determine the site-related equation from the previous LWC and VIS measurement.