retention of snow
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Snow grooming — is the process to manipulate snow for recreational uses, usually using a snow groomer vehicle. This can be a tractor, truck or snowcat towing specialised equipment to move and manipulate snow. The process is used to maintain ski hills and… … Wikipedia
John Snow — Le Docteur John Snow John Snow (1813 1858) est un médecin britannique et un chef de file dans le domaine de l anesthésie et de l hygiène médicale. Il est considéré comme l un des fondateurs de l épidémiologie moderne. Sommaire … Wikipédia en Français
Cool roof — In the world of industrial and commercial buildings, a cool roof is a roofing system that can deliver high solar reflectance (the ability to reflect the visible, infrared and ultraviolet wavelengths of the sun, reducing heat transfer to the… … Wikipedia
Avalanche control — or avalanche defense activities aim at the elimination and reduction of hazard and damage resulting from avalanches. [http://geosurvey.state.co.us/Default.aspx?tabid=400 Mitigation and Land Use Avalanches ] , Colorado Geological Survey] There are … Wikipedia
Utah — This article is about the U.S. state of Utah. For other uses, see Utah (disambiguation). State of Utah … Wikipedia
Crystallization — Crystallizing and Crystallized redirect here. For the action adventure video game, see Crystalis. For the 2009 song by The xx, see Crystalised. For other uses, see Crystallization (disambiguation). Crystallization … Wikipedia
Sierra Nevada subalpine zone — The Sierra Nevada subalpine zone refers to a biotic zone below treeline in the Sierra Nevada mountain range of California, United States. This zoneis positioned between the upper montane zone (such as red fir forest) at its lower limit, and tree… … Wikipedia
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
Jewellery Quarter — infobox UK place country = England latitude= 52.489 longitude= 1.910 official name= Jewellery Quarter map type= West Midlands population = 3,000 approx. population density= area total km2= 1.07 metropolitan borough= City of Birmingham… … Wikipedia
climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… … Universalium
Winter — For other uses, see Winter (disambiguation). Part of the Nature series on Weather Calendar seasons Spring … Wikipedia
