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Grain size (E) represents the average size of grains, each measured at its greatest extension, measured in millimetres. Snow density (ρ s) is the mass per unit volume of snow of a known volume, calculated as kg/m 3. Classification runs from very fine at below 0.2 mm to very coarse (2.0–5.0 mm) and beyond.
Assisted by Ramesh Gautam, left, Sean de Guzman, chief of snow surveys for the California Department of Water Resources, measures the depth of the snowpack during the second snow survey of the ...
When it comes to measuring snow cover on the ground, typically three variables are measured: the snow cover extent (SCE) — the land area covered by snow, snow cover duration (SD) — how long a particular area is covered by snow, and the snow accumulation, often expressed as snow water equivalent (SWE), which expresses how much water the snow ...
A snow gauge is a type of instrument used by meteorologists and hydrologists to gather and measure the amount of solid precipitation (as opposed to liquid precipitation, which is measured by a rain gauge) over a set period of time.
Snow measurement is inherently inexact, but sticking to the guidelines helps. First, understand the difference between snow depth and snowfall. Snow storm: How is snowfall measured?
The TU (for time unit) is a unit of time defined as 1024 μs for use in engineering. The svedberg is a time unit used for sedimentation rates (usually of proteins). It is defined as 10 −13 seconds (100 fs). The galactic year, based on the rotation of the galaxy and usually measured in million years. [2]
The density and moisture content of powder snow can vary widely; snowfall in coastal regions and areas with higher humidity is usually heavier than a similar depth of snowfall in an arid or continental region. Light, dry (low moisture content, typically 4–7% water content) powder snow is prized by skiers and snowboarders. [38]
A storm that dropped a fresh blanket of snow across the interior West over the weekend began strengthening across the middle of the nation on Christmas Day, bringing treacherous travel with snow ...