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Snowpack is an accumulation of snow that compresses with time and melts seasonally, often at high elevation or high latitude. [1] [2] Snowpacks are an important water resource that feed streams and rivers as they melt, sometimes leading to flooding. Snowpacks provide water to down-slope communities for drinking and agriculture. [3]
The accumulation zone is found at the highest altitude of the glacier, where accumulation of material is greater than ablation. On a glacier , the accumulation zone is the area above the firn line, where snowfall accumulates and exceeds the losses from ablation , ( melting , evaporation , and sublimation ).
The boundary between the accumulation zone and the ablation zone on glaciers is called the "annual snow line". The glacier region below this snow line was subject to melting in the previous season. The term "orographic snow line" is used to describe the snow boundary on surfaces other than glaciers.
Snow Depth-This is a measurement from the snow surface to the ground in meters. It is commonly does over a large time span using immobile graduated stakes. Snow Water Equivalency- A measuring tool which represents the vertical depth of water that would accumulate in an area, if all the snow and ice were melted in that given area.
Snow water equivalent (SWE) is the depth of water that would result if the snow mass melted completely, whether over a given region or a confined snow plot, calculated as the product of the snow height in meters times the vertically-integrated density in kilograms per cubic meter.
Extreme snow accumulation on building roofs. Snow is an important consideration for loads on structures. To address these, European countries employ Eurocode 1: Actions on structures - Part 1-3: General actions - Snow loads. [85] In North America, ASCE Minimum Design Loads for Buildings and Other Structures gives guidance on snow loads. [86]
How much snow did Michigan get? Gaylord, Michigan, between Lake Huron and Lake Michigan, had almost 34 inches as of Saturday evening, and snow showers were forecast for every day this week.
Snow accumulation on ground and in tree branches in Germany Snow blowing across a highway in Canada Spring snow on a mountain in France. Classifications of snow describe and categorize the attributes of snow-generating weather events, including the individual crystals both in the air and on the ground, and the deposited snow pack as it changes over time.