You are watching: What happens to the intensity of solar energy as latitude increases
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atmosphere - Energy and also Latitude
The sun is constantly up, even in the middle of the night in Antarctica during the summer. The photograph on the left is Antarctica throughout the night in the summer. The photo on the best is Antarctica throughout the job in summer. Similarly, in the winter Antarctica is largely dark every day.
Different components of Earth’s surface receive different quantities of sunlight. The sun’s beam strike Earth’s surface ar most directly at the equator. This concentrates the rays on a tiny area. Because the beam hit an ext directly, the area is cook more. You deserve to see this in the figure below. An alert that the earth is tilted top top its axis. The curvature the the Earth reasons the reduction in power concentration. Additionally, the tilt that the earth in some cases (winter in northern hemisphere) causes a reduction, and in other situations (summer in the northern hemisphere) actually causes rise in power concentration.
The tilt that the Earth reasons different areas to receive different amounts of solar energy. The distinction in solar power received at different latitudes cd driver atmospheric circulation. Locations that get more solar power have more heat. Locations that gain less solar power have much less heat. The air above the areas receiving an ext heat warms up and rises. The air end the locations receiving less warm is cooler and also so the sinks. The rising warm air and also sinking cool air develop wind which move air and also heat approximately the planet.
Source:Open education and learning Group Textbooks - earth Science
If us were to compare these 2 regions, us would uncover that there is a net loss of solar radiation in the higher latitudes and also a net obtain in the tropics. This difference in solar radiation create a movement of waiting (wind) native the warmer tropical areas toward the cooler northern and southern regions, the poles. See number 2.
This moving air creates oceanic surface ar currents that moves the water in the exact same direction as the wind, the is, currents native the equator and also tropics move warm water northward toward higher latitudes, and currents from the poles move cooler water southward toward lower latitudes. Now think about this, execute winds within the area whereby you live blow from the north towards the southern or southern toward the north? If you analyze wind trends where you live, you probably will discern that the winds usually have a westerly or one easterly component to the north-south directions, i.e. Northwest, southeast, southwest, west southwest, etc. What is the factor for this? Why don"t winds blow simply north and also south, relocating the s currents north and also south follow to figure 2? great question. Research will help provide the answer.
SummaryA the majority of the solar power that reaches planet hits the equator. Much much less solar power gets come the poles. The distinction in the lot of solar energy drives atmospheric circulation.
Practice use this source to price the inquiries that follow.What is latitude? What go latitude method to the heating of the Earth? Why carry out high latitudes receive much less sunlight? What is the edge of incidence?
Answers - to mark the box listed below to see the answers.
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|Latitude is the measure up of the distance of a location on the earth from the equator. The more away from the equator that a place resides, the less sunlight that this ar receives. the all needs to do v the form of the Earth. Due to the fact that the earth is round, just the prior most portion receives direct sunlight.|
ReviewThe north Pole receives sunshine 24 hours a day in the summer. Why does that receive much less solar radiation 보다 the equator? What component of earth receives the most solar radiation in a year? What renders the setting move the means it does?
Answers - highlight the box below to watch the answers.
|it receives much less solar radiation than the equator since the angle of incidence is much smaller. The sun’s rays carry out not to win the Earth’s surface ar as directly at the phibìc Pole; lock are less focused. The equator receive the many solar radiation in a year. The difference in the quantity of solar power the soil receives reasons the setting to move the means it does.|
Source:Open education Group Textbooks - planet Science