Why do tropical regions receive a greater input of solar radiation than the poles and what receives the most solar radiation besides the equator?
The region with the highest mean annual insolation is the Atacama desert in the Andes because of a combination of: low latitude, high altitude, low cloudiness, low humidity, and low aerosols.
The tropics refer to the region of Earth around the equator. The weather here is, on average, hot and humid. The curve of the planet leads to the tropics receiving more direct solar radiation than the rest of the Earth and more than the region re-radiates back to space. The tropical regions receive a greater input of solar radiation than the poles because the Sun's rays hit those regions more directly due to the Earth's tilt. Because Earth is a sphere, not all part of the Earth receives the same amount of solar radiation. More solar radiation is received and absorbed near the equator than at the poles. Near the equator, the Sun's rays strike the Earth most directly, while at the poles the rays strike at a steep angle.The equator receives more incoming solar radiation than the poles because Earth is spherical. At the equator, the sun's rays are almost perpendicular to the surface at solar noon. At the lower sun angles characteristic of high latitudes, the sun's rays are spread over a larger surface area. At the poles, the ice, snow and cloud cover create a much higher albedo, and the poles reflect more and absorb less solar energy than the lower latitudes. Through all of these mechanisms, the poles absorb much less solar radiation than equatorial regions, which is why the poles are cold and the tropics are very warm. Due to the spherical shape of the Earth, sunlight falls on different parts at different angles. Direct and focused sun rays falls on the equator and hence, the regions here are hotter and warmer. In the tropics there is a net energy surplus because the amount of sunlight absorbed is larger than the amount of heat radiated. In the Polar Regions, however, there is an annual energy deficit because the amount of heat radiated to space is larger than the amount of absorbed sunlight. Sunlight hits a smaller surface area at the Equator so heats up quickly compared to the poles. There are fewer atmospheres to pass through at the Equator compared to the poles. This means more heat from the sun makes it to the surface of the Earth. Conversely, the region that receives the most solar radiation, aside from the equator, is typically found in the subtropical zones known as the Tropics of Cancer and Capricorn. These are the regions located at approximately 23.5 degrees north and 23.5 degrees south of the equator, respectively.
The tropical regions receive a greater input of solar radiation than the poles and what receives the most solar radiation besides the equator, because the sun's rays hit the Earth's surface at a more direct angle in the tropics. This is because the Earth is tilted on its axis, and the tropics are located closer to the equator than the poles.
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Earth's axis
At the equator, the sun's rays hit the Earth's surface at a 90-degree angle, which means that the maximum amount of solar radiation is reaching the Earth's surface. As you move away from the equator, the sun's rays hit the Earth's surface at a more oblique angle, which means that the amount of solar radiation reaching the Earth's surface decreases.
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Sun's rays hitting the Earth's surface at different angles
The poles receive the least amount of solar radiation because the sun's rays hit the Earth's surface at a very oblique angle. In fact, at the poles, the sun's rays can sometimes graze the Earth's surface without actually hitting it. This is why the poles are so cold.
The land areas between the tropics and the poles are called temperate regions. Temperate regions receive more solar radiation than the poles, but less than the tropics. This is because the sun's rays hit the Earth's surface at a more oblique angle in temperate regions than at the equator, but less oblique than at the poles.
In addition to the sun's rays hitting the Earth's surface at a more direct angle, the tropics also receive more solar radiation because they have more daylight hours than the poles. This is because the Earth is tilted on its axis, and the tropics are located closer to the equator than the poles. As a result, the tropics have longer days and shorter nights than the poles.
In fact, one of the most important factors could be the two following factors. 1. the existing micro-climates and 2. meso-climates in these areas. However, Among that there are many other factors that play a significant role in these areas such as sunshine hours, radiation angle of sun, available Albedo and etc... Of course, it is necessary to discuss the aforementioned variables with more caution.
Regards
In fact, one of the most important factors could be the two following factors. 1. the existing micro-climates and 2. meso-climates in these areas. However, Among that there are many other factors that play a significant role in these areas such as sunshine hours, radiation angle of sun, available Albedo and etc... Of course, it is necessary to discuss the aforementioned variables with more caution.
Regards
Yes, conversely, the region that receives the most solar radiation, aside from the equator, is typically found in the subtropical zones known as the Tropics of Cancer and Capricorn. These are the regions located at approximately 23.5 degrees north and 23.5 degrees south of the equator, respectively. The equator receives the most direct sunlight because sunlight arrives at a perpendicular (90 degrees) angle to the Earth. The specific areas of the planet which receive more intense solar radiation are the areas that fall under the equator. The equator is an imaginary line that creates two exactly equal hemispheres of the planet: the south and north hemispheres. The equator is found at 0° latitude. Mercury is an extreme planet in several respects. Because of its nearness to the Sun its average orbital distance is 58 million km (36 million miles) it has the shortest year (a revolution period of 88 days) and receives the most intense solar radiation of all the planets. Because the Earth is round, the frigid Polar Regions never get a high sun, and because of the tilted axis of rotation, these areas receive no sun at all during part of the year.Because the Earth is a sphere, the surface gets much more intense sunlight (heat) at the equator than at the poles. During the equinox (the time of year when the amount of daylight and nighttime are approximately equal), the Sun passes directly overhead at noon on the equator. The Polar Regions receive the least solar radiation because of the curvature of the Earth. The night lasts six months during the winter. Even in summer, the sun never raises high in the sky. The equator receives more incoming solar radiation than the poles because Earth is spherical. At the equator, the sun's rays are almost perpendicular to the surface at solar noon. At the lower sun angles characteristic of high latitudes, the sun's rays are spread over a larger surface area. Closer to the poles, a beam of the same width covers a much bigger amount of the Earth, because it arrives at a different angle to the Earth's surface. This means that the surface of the Earth receives more energy in the tropics per unit area than it does at the poles. At the poles, the ice, snow and cloud cover create a much higher albedo, and the poles reflect more and absorb less solar energy than the lower latitudes. Through all of these mechanisms, the poles absorb much less solar radiation than equatorial regions, which is why the poles are cold and the tropics are very warm.
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