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The symbols for cloud cover on these maps, like the modern symbols, were drawn inside the circle marking the position of the weather station making the measurements. Unlike the modern symbols, these ones consisted of straight lines only rather than filled in blocks which would have been less practical on a hand drawing.
Although clouds can exist within a wide range of altitudes, typical cloud cover has a base at approximately 4,000m and extends up to an altitude of about 5,000m. [9] Clouds height can vary depending on latitude; with cloud cover in polar latitudes being slightly lower and in tropical regions the cloud cover may extend up to 8,000m.
NASA graphic representing the distribution of solar radiation. Cloud albedo is a measure of the albedo or reflectivity of a cloud. Clouds regulate the amount of solar radiation absorbed by a planet and its solar surface irradiance. Generally, increased cloud cover correlates to a higher albedo and a lower absorption of solar energy.
These meteorological-satellite service, however, see more than clouds and cloud systems. Observation is typically made via different 'channels' of the electromagnetic spectrum, in particular, the visible and infrared portions. Some of these channels include: [9] [10] Visible and Near Infrared: 0.6–1.6 μm – for recording cloud cover during ...
Much of Texas, considered prime eclipse-viewing territory by many traveling there for the occasion, was predicted in forecast models on Friday to have cloud cover of 60%-80% on eclipse day.
UK Space Agency and Surrey Satellite Technology: 2018 PlanetScope-2 [43] Active Planet: 2016 SkySat-1 to 3: Active Planet: 2013 SkySat-4 to 7: Active Planet: 2016 SkySat-8 to 13: Active Planet: 2017 SPOT 6 and 7 Active EADS Astrium Azercosmos, and CNES 2012 SuperView-1 [44] Active Beijing Space View Technology 2018 TripleSat (UK-DMC 3) [45] [46 ...
An inversion is also produced whenever radiation from the surface of the earth exceeds the amount of radiation received from the sun, which commonly occurs at night, or during the winter when the sun is very low in the sky. This effect is virtually confined to land regions as the ocean retains heat far longer.
Under dry, cloud-free conditions, water vapor in atmosphere contributes 67% of the greenhouse effect on Earth. When there is enough moisture to form typical cloud cover, the greenhouse effect from "free" water vapor goes down to 50%, but water vapor which is now inside the clouds amounts to 25%, and the net greenhouse effect is at 75%. [21]