what is the relationship between angles of insolation and latitude?
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1. The intensity of insolation increases, as the angle of insolation gets closer to 90 degrees. 2. The intensity of insolation decreases with an increase in latitude.
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Insolation (solar radiation from the sun that is intercepted by the earth) is the single most important influence on temperature.
816267
The tilt of the Earth's axis also defines the length of daylight. Daylight hours are shortest in each hemisphere's winter. Between summer and winter solstice, the number of daylight hours decreases, and the rate of decrease is larger the higher the latitude. The fewer sunlight hours the colder the nights.
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Antarctica has six months of daylight in its summer and six months of darkness in its winter. The seasons are caused by the tilt of Earth's axis in relation to the sun. The direction of the tilt never changes. But as the Earth orbits the sun, different parts of the planet are exposed to direct sunlight.
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Some characteristics of latitudes: The arc between any two parallels a and b will subtend an angle of (a-b) ° at the centre of the globe. There is a complementary arc between the parallel and the pole subtended by an angle of (90-n) ° at the centre.
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Latitude. UV levels are higher closer to the equator. Closer to the equator the sun's rays have a shorter distance to travel through the atmosphere and therefore less of the harmful UV radiation can be absorbed.
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However, the Earth is slightly elliptical in shape and that creates a small variation between the degrees as we work our way from the equator to the north and south poles. Each degree of latitude is approximately 69 miles (111 kilometers) apart. At the equator, the distance is 68.703 miles (110.567 kilometers).
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Similarly, in the winter, the angle of the sun drops lower casting less concentrated heat and longer shadows. Just as the sun's proximity to earth directly affects the surface temperature, the angle of the sun also dictates the length of shadows.
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The primary unit in which longitude and latitude are given is degrees (°). There are 360° of longitude (180° E ↔ 180° W) and 180° of latitude (90° N ↔ 90° S). Each degree can be broken into 60 minutes ('). Each minute can be divided into 60 seconds (”).
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Each degree of latitude is approximately 69 miles (111 kilometers) apart. The range varies (due to the earth's slightly ellipsoid shape) from 68.703 miles (110.567 km) at the equator to 69.407 (111.699 km) at the poles.
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At latitude 0° (the Equator) day length will be approximately 12 hours. Areas on the Equator have a constant 12 hours of day light all year round. As latitude increases to 80° (polar circles - north or south) day length can be seen to increase to 24 hours or decrease to zero (depending on time of year).
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["Earth's Axis. Earth sits at a tilt of 22.5 degrees, also known as an axis. ... ", "Sunlight. Sunlight influences the seasons, particularly the sun's position and Earth's surface that reflects the light. ... ", 'Elevation. Elevation also influences the seasons. ... ', 'Wind Patterns. As the seasons change, so do the wind patterns. ... ', 'Global Warming.']
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The Sun culminates at 46.56° altitude in winter and 93.44° altitude in summer. In this case an angle larger than 90° means that the culmination takes place at an altitude of 86.56° in the opposite cardinal direction.
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Each degree of latitude is approximately 69 miles (111 kilometers) apart. The range varies (due to the earth's slightly ellipsoid shape) from 68.703 miles (110.567 km) at the equator to 69.407 (111.699 km) at the poles. This is convenient because each minute (1/60th of a degree) is approximately one [nautical] mile.
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There's no change at the equator and the biggest change is at the poles. So the higher the latitude the more extreme the difference in seasons. When a hemisphere is tilted away from the sun, eg, south in June-July) it gets less sunlight and hence is colder; the same differences in latitude apply.
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It is the average length of one minute of one degree along a great circle of the Earth. One nautical mile corresponds to one minute of latitude. Thus, degrees of latitude are approximately 60 nautical miles apart.
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Actually, though, the Earth is tilted 23.4 degrees! (A circle is 360 degrees.) This tilt is the reason that days are longer in the summer and shorter in the winter. The hemisphere that's tilted closest to the Sun has the longest, brightest days because it gets more direct light from the Sun's rays.