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These changes are attributed to global climate change, which may lead to earlier melting and less coverage area. In some areas, snow depth increases because of higher temperatures in latitudes north of 40°. For the Northern Hemisphere as a whole the mean monthly snow-cover extent has been decreasing by 1.3% per decade. [67]
The term "trace" is used in two different but related contexts. The first is in weather forecasting and record-keeping of rain, snow, and other precipitation, where a trace denotes an amount of precipitation that is greater than zero, but is too small to be measured by standard units or methods of measurement.
Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...
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.
For example, snow tires which enhance traction during harsh winter driving conditions are labelled with a snowflake on the mountain symbol. [32] A stylized snowflake has been part of the emblem of the 1968 Winter Olympics , 1972 Winter Olympics , 1984 Winter Olympics , 1988 Winter Olympics , 1998 Winter Olympics and 2002 Winter Olympics .
Miscellaneous Symbols is a Unicode block (U+2600–U+26FF) containing glyphs representing concepts from a variety of categories: astrological, astronomical, chess, dice, musical notation, political symbols, recycling, religious symbols, trigrams, warning signs, and weather, among others.
Blowing snow [1] is snow lifted from the surface by the wind, at eye level (1.8 m or 6 ft) or more, [2] that will reduce visibility. Blowing snow can come from falling snow or snow that already accumulated on the ground but is picked up and blown about by strong winds. It is one of the classic requirements for a blizzard. Its METAR code is BLSN.
Synoptic snow storms tend to be large and complex, with many possible factors affecting the development of thundersnow. The best location in a storm to find thundersnow is typically in its NorthWest quadrant (in the Northern Hemisphere , based on observations in the Midwestern United States ), within what is known as the "comma head" of a ...