Premium Only Content

The phenomenon of snow in the wilderness I Wild Animals
BBC I The phenomenon of snow in the wilderness I Wild Animals
beficompta
218
عدد المعجبين
25,317
عدد المشاهدات
2018
20 مارس
BBC I The phenomenon of snow in the wilderness I Wild Animals
Snow refers to forms of ice crystals that precipitate from the atmosphere (usually from clouds) and undergo changes on the Earth's surface. It pertains to frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw. Where the climate is cold enough for year-to-year accumulation, a glacier may form. Otherwise, snow typically melts seasonally, causing runoff into streams and rivers and recharging groundwater.
Major snow-prone areas include the polar regions, the upper half of the Northern Hemisphere and mountainous regions worldwide with sufficient moisture and cold temperatures. In the Southern Hemisphere, snow is confined primarily to mountainous areas, apart from Antarctica.
Snow affects such human activities as transportation: creating the need for keeping roadways, wings, and windows clear; agriculture: providing water to crops and safeguarding livestock; sports such as skiing, snowboarding, and snowmachine travel; and warfare. Snow affects ecosystems, as well, by providing an insulating layer during winter under which plants and animals are able to survive the cold
-
27:23
Clickbait Wasteland
13 hours agoAsking New Yorkers Who They Support For Mayor: Staten Island
491 -
16:58
World2Briggs
21 hours agoThe California Rant: Point Blank With No Fluff or BS. California Gold?
198 -
17:49
Chris Harden
1 day ago $0.01 earnedThe Glass Capital That Shattered | The Decline of Streator, Illinois
8 -
51:15
JohnXSantos
3 days agoClothing Brand Manufacturers + Winners
191 -
10:06
Cyclops Videos Joe W Rhea
12 days agoHybrid Super 22 Rifle
67 -
8:30
Millionaire Mentor
20 hours agoMaria Bartiromo Plays Clip That DESTROYS Adam Schiff’s Entire Story
85 -
27:32
The Finance Hub
20 hours agoBREAKING: JD VANCE JUST DROPPED A MASSIVE BOMBSHELL!!!
114 -
19:02
Professor Gerdes Explains 🇺🇦
37 minutes agoInside Ukraine's Master Plan to Paralyze Russia from the Inside Out
-
18:23
Russell Brand
20 hours agoThe Princess Who Predicted Her Own DEATH
35K53 -
34:51
The Brett Cooper Show
1 day ago $1.17 earnedWhy Are Men STILL Invading Women’s Spaces? | Episode 59
17.7K27