3/ Be careful of solar radiation
Solar radiation can be found in various conditions.
· Direct radiation: These are UV rays which strike the skin directly. Their intensity will depend on the time, season, latitude and altitude.
· Reflected radiation: This is the result of the sun's rays' reflecting off a reflective surface such as: snow (70 to 80%), white surfaces (walls or floors: 20 to 40%), sand (15 to 20%), water (5 to 10%) or dark surfaces (3% on grass).
· Diffuse radiation: These are rays that come from the atmosphere, irrespective of whether or not the weather is nice. Solar radiation passes through clouds and spreads across the entire surface of the earth.
Our advice: take care, rays are not necessarily only a risk if the sky is clear. In overcast, cloudy weather, they can also strike the skin by reflection or diffusion.