Showing posts with label Sky. Show all posts
Water sky is
a phenomenon that is closely related to ice blink. It forms in regions with
large areas of ice and low lying clouds and so is limited mostly to the extreme
northern and southern sections of earth, in Antarctica and in the Arctic. The
dark clouds over open water have long been used by polar explorers and
scientists to navigate in sea ice. For example, Arctic explorer Fridtjof Nansen
and his assistant Hjalmar Johansen. Source
The rhyme is a rule of thumb used for weather forecasting
during the past two millennia. It is based on the reddish glow of the morning
or evening sky, caused by haze or clouds related to storms in the region. If the
morning skies are red, it is because clear skies over the horizon to the east
permit the sun to light the undersides of moisture-bearing clouds. The saying
assumes that more such clouds are coming in from the west. Source
The sky (or celestial dome) is everything that
lies a certain distance above the surface of the Earth, including
the atmosphere and outer space. In the field of astronomy, the sky is also
called the celestial sphere. During
daylight, the sky appears to be blue because air scatters blue sunlight more
than it scatters red. At night, the sky appears to be a mostly dark
surface or region scattered with stars. During the day, the Sun can be seen in
the sky, unless obscured by clouds. In the night sky (and to some extent during
the day) the moon, planets and stars are visible in the sky. Source
Water sky is a phenomenon that is closely related to ice blink. It forms in regions with large areas of ice and low lying clouds and so is limited mostly to the extreme northern and southern sections of earth, in Antarctica and in the Arctic. When light hits the blue oceans or seas, some of it bounces back and enables the observer to physically see the water. However, some of the light also is reflected back up on to the bottoms of low lying clouds and causes a dark spot to appear underneath some clouds. These clouds may be visible when the seas are not and can show alert and knowledgeable travelers the general direction of water. The dark clouds over open water have long been used by polar explorers and scientists to navigate in sea ice. For example, Arctic explorer Fridtjof Nansen and his assistant Hjalmar Johansen used the phenomenon to find lanes of water in their failed expedition to the North Pole as did Bernacchi and Sir Douglas Mawson in the Antarctica. Source
A desert is a barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one third of the land surface of the world is arid or semi-arid. This includes much of the polar regions where little precipitation occurs and which are sometimes called "cold deserts". Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location. Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter and the resulting fragments and rubble strewn over the desert floor is further eroded by the wind. This picks up particles of sand and dust and wafts them aloft in sand or dust storms. Source
The sky is everything that lies a certain distance above the surface of the Earth, including the atmosphere and outer space. In the field of astronomy, the sky is also called the celestial sphere. This is an imaginary dome where the sun, stars, planets, and the moon are seen to be traveling. The celestial sphere is conventionally divided into regions called constellations. Usually, the term sky is used from the point of view of the Earth's surface; however, the exact meaning of the term can vary. For example, in some cases the sky is defined as only the denser portions of the atmosphere. During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. Source
