How dust travels from the Sahara desert to the Alps - in pictures

Skiers wearing protective face mask ski as Sahara sand colours the snow and the sky in a yellow cast and creates a special light atmosphere, in the Alpine resort of Anzere, Switzerland. EPA
Snowkiters sliding on snow covered with sand at Col du Lautaret mountain pass in Serre Chevalier, a major ski resort in Southeastern France. Reuters
Bavaria, Garmisch-Partenkirchen: The sky above the mountains in the Wetterstein range is clouded by the Sahara sand in the air. Getty Images
Ski slopes are covered with Sahara sand in the tiny Andorra principality in the Pyrenees mountains. Reuters
Skiers wearing protective face masks sit on a chairlift as Sahara sand colours the snow and the sky in a yellow cast and creates a special light atmosphere, in the Alpine resort of Anzere, Switzerland. EPA
Sahara dust makes the sky misty as skiers rest on the terrace of a restaurant beside a piste at the Corviglia ski area in the Alpine resort of St. Moritz, Switzerland. Reuters
Tourists ride an ATV along the sand dunes at just before sunset in Erg Chebbi desert near the small Moroccan village of Merzouga in the Sahara Desert. Reuters
Dr Diana Francis said snow melt can be expected to occur more frequently under global warming.