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When it is overcast, the clouds are stratus clouds, which are gray or grayish white. A few examples of overcast skies are exhibited below: Obscured: Obscured skies have something that is blocking both the view of the sky and the clouds.
Cloud cover (also known as cloudiness, cloudage, or cloud amount) refers to the fraction of the sky obscured by clouds on average when observed from a particular location. [2] Okta is the usual unit for measurement of the cloud cover.
13 wrz 2019 · Obscured – Something is blocking your view of the sky AND the clouds. This could be dust, haze (pollution), smoke, volcanic ash, and even heavy rain or snow. Snow will appear white, but other obscurations may give the sky a brownish or orangish hue.
The definitions of clouds given in the present Atlas apply, unless otherwise specified, to observations carried out under the following conditions: (a) The observer is at the Earth’s surface, on land in areas without mountainous relief or at sea. (b) The air is clear, and no obscuring phenomena such as fog, haze, dust, smoke, etc. are present.
4 lut 2021 · Below are some examples — specifically of the same areas shown above in the Cloud Masking section. This Cloudfree Merging image performs visibly better than the Cloud Masking approach
19 lut 2019 · Cloud observations can be taken at any time! The Clouds tool is designed to be flexible and fit into your schedule, allowing you to classify, observe, and report when it works for you. Observations taken matched to a satellite flyover are particularly helpful for studying clouds.
The WMO International Cloud Atlas is the reference for the classification of clouds and meteorological meteors. It provides the definitions and descriptions of cloud types and meteors, and flow charts to help identify them.
