The aim of the project is to identify atmospheric visibility change predictors on a hourly time scale, among multi-sensor observation data sets,
including ground-based instruments and satellites. The project involved the collaboration of CNRS and HYGEOS.
Assistance tool for fog formation nowcasting on a site
shows the evolution of local observed parameters in real time,
shows the evolution of the regional cloud cover observed by satellite,
Six predictors were selected [Elias et al., Accepted by AAQR], from several parameters which can be observed operationally in an airport:
visibility level and change in time;
local and regional cloud cover observed by satellite and ceilometer;
vertical gradient of temperature.
We also conducted a study on the impact of the hydrated aerosols composing the mist: they can have a significant impact in radiative transfer in the fog
as they contribute by ~20% in the visibility drop at the fog formation (Elias et al., 2009), (Elias et al., 2015).
Funder: DGA via the RAPID scheme Duration: 2010 - 2013 Contact at Hygeos:Thierry Elias