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词条 Sea of clouds
释义

  1. Formation

  2. Artistic uses

  3. References

{{For|the lunar mare|Mare Nubium}}

A sea of clouds is an overcast layer of clouds, viewed from above, with a relatively uniform top which shows undulations of very different lengths resembling waves.[1] A sea of fog is formed from stratus clouds or fog and does not show undulations.[2]

In both cases, the phenomenon looks very similar to the open ocean. The comparison is even more complete if some mountain peaks rise above the clouds, thus resembling islands.

Formation

A sea of clouds forms generally in valleys or over seas in very stable air mass conditions such as in a temperature inversion. Humidity can then reach saturation and condensation leads to a very uniform stratocumulus cloud, stratus cloud or fog. Above this layer, the air must be dry. This is a common situation in a high-pressure area with cooling at the surface by radiative cooling at night in summer, or advection of cold air in winter or in a marine layer.

Artistic uses

  • The term Sea of Clouds (雲海) is a Chinese poetic term for the surroundings of a mountain's summit, such as the one at Huangshan.[3]
  • Wanderer above the Sea of Fog is an oil painting composed in 1818 by the German Romantic artist Caspar David Friedrich depicting this phenomenon.

References

1. ^{{cite web | url= http://www.eumetcal.org/euromet/glossary/seaofclo.htm | title= Sea of clouds | author= World Meteorological Organization | publisher= Eumetcal | accessdate= February 22, 2015 | deadurl= yes | archiveurl= https://web.archive.org/web/20160303185423/http://www.eumetcal.org/euromet/glossary/seaofclo.htm | archivedate= March 3, 2016 | df= }}
2. ^{{cite web | url= http://www.eumetcal.org/euromet/glossary/seaoffog.htm | title= Sea of fog | author= World Meteorological Organization | publisher= Eumetcal | accessdate= February 22, 2015 | deadurl= yes | archiveurl= https://web.archive.org/web/20160303190850/http://www.eumetcal.org/euromet/glossary/seaoffog.htm | archivedate= March 3, 2016 | df= }}
3. ^{{cite book | first1=Derek |last1=Maitland |first2=Chris |last2=Taylor|title=Traveler's China companion|date=1998|publisher=Globe Pequot Press|location=Old Saybrook|isbn=9780762702497|page=20}}
{{commons category|Sea of clouds}}{{climate-stub}}

1 : Clouds

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