snow farming
n.— «The Ski Club of Great Britain reports that Laax has been engaging in a technique called “snow farming” which aims to reduce the amount of snow made by artificial means. Snow Farming works by storing snow in a half pipe before covering it with a compound cover.» —“Swiss Ski Resort Saves Snow” Fast Track Ski News (Swindon, Wiltshire, United Kingdom) June 23, 2008. (source: Double-Tongued Dictionary)