The amount of insolation is dependent on latitude and the seasons?
Question: The amount of insolation is dependent on latitude and the seasons?
How does the Sun's energy vary across the Earth? One of the factors that determines the amount of solar radiation or insolation that reaches a certain location is its latitude. Latitude is the angular distance of a place from the equator, measured in degrees north or south. The closer a place is to the equator, the more direct and intense the sunlight is, and the higher the insolation. The farther a place is from the equator, the more oblique and diffuse the sunlight is, and the lower the insolation.
Another factor that affects the amount of insolation is the season. The Earth's axis is tilted at an angle of 23.5 degrees, which means that different parts of the Earth receive different amounts of sunlight throughout the year. When the northern hemisphere is tilted towards the Sun, it experiences summer, while the southern hemisphere experiences winter, and vice versa. During summer, the Sun is higher in the sky, the days are longer, and the insolation is higher. During winter, the Sun is lower in the sky, the days are shorter, and the insolation is lower.
In this blog post, we will explore how latitude and season affect the insolation at different locations on Earth, using data from NASA's CERES (Clouds and the Earth's Radiant Energy System) project. CERES measures the amount of incoming and outgoing radiation at the top of the atmosphere, using satellites and ground-based instruments. We will use CERES data from January and July 2020 to compare the insolation at four locations: Quito (Ecuador), New York (USA), London (UK), and Sydney (Australia).
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