| Display title | Snow Means Cold/Useful Notes |
| Default sort key | Snow Means Cold/Useful Notes |
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| Page ID | 74288 |
| Page content language | en - English |
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| Page creator | prefix>Import Bot |
| Date of page creation | 21:27, 1 November 2013 |
| Latest editor | Looney Toons (talk | contribs) |
| Date of latest edit | 17:52, 4 January 2019 |
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Description | Content |
Article description: (description)
This attribute controls the content of the description and og:description elements. | Snowfall (like all precipitation) is dependent on something called "relative humidity", which is a ratio of the partial pressure of the water vapor in a mass of air compared to the saturated vapor pressure (i.e. the water vapor pressure at equilibrium with any liquid water present). 100% relative humidity at a given temperature is also called the dew point, and an air mass at 100% relative humidity is known by the arcane technical term of "cloud" (or if it's close to the ground, "fog"). The dew point varies with temperature, however: 10 grams of water vapor per kilogram of air at 15 degrees C would be almost 100% relative humidity, but that same partial pressure at 25 degrees C is only about 50% relative humidity. When a cloud is cooled for some reason (whether that be due to a front, the sun setting, or even the cloud being pushed up a mountain slope or just rising due to the adiabatic process), it suddenly becomes super-saturated (i.e. the relative humidity increases to more than 100%) and some of that water vapor will condense to bring the air mass back to equilibrium. If the cloud is colder than the freezing point the moisture comes out as snow. But because a warmer cloud can hold more moisture than a colder cloud, the closer the cloud is to the freezing point the more snow it'll produce. |