If we average out over an entire 24 hour cycle the amount of solar radiation hitting the Earth’s surface (known as the solar irradiance) on a clear day at the equator on the equinox is approximately 340 W/m2.
How much solar energy hits the Earth every hour?
In a single hour, the amount of power from the sun that strikes the Earth is more than the entire world consumes in an year. To put that in numbers, from the US Department of Energy: Each hour 430 quintillion Joules of energy from the sun hits the Earth. That’s 430 with 18 zeroes after it!
How much solar radiation hits the Earth?
Thus, about 71 percent of the total incoming solar energy is absorbed by the Earth system. Of the 340 watts per square meter of solar energy that falls on the Earth, 29% is reflected back into space, primarily by clouds, but also by other bright surfaces and the atmosphere itself.
How much energy do we get from the sun every day?
So for the six hours in the middle of a sunny day, an area the size of a small backyard swimming pool (48 m2) will receive about 288 kilowatts of energy. That’s nearly 10 times what the average US household uses in an entire day!
What percentage of solar energy reaches the Earth?
How much solar energy is received by Earth per second at day time?
Most of the world’s population live in areas with insolation levels of 150–300 watts/m2, or 3.5–7.0 kWh/m2 per day. Solar radiation is absorbed by the Earth’s land surface, oceans – which cover about 71% of the globe – and atmosphere.
How much solar energy hits the Earth every second?
In terms of mass, you can think of the total energy output as about 4,000,000 tons every second. When the curvature of the Earth and the density of the luminosity that hits our planet is considered, we receive only about 4.5 pounds per second of that energy.
Does the Earth lose heat to space?
Since Earth is surrounded by the vacuum of outer space, it cannot lose energy through conduction or convection. Instead, the only way the Earth loses energy to space is by electromagnetic radiation.
How much percent of energy is absorbs from the Sun to Earth?
In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface.
How much solar energy reaches Earth on a cloudless day?
On a cloudless day, each square meter of Earth’s surface is bombarded with about one kilowatt of energy in a single hour of sunlight. Put another way, the amount of solar energy that hits the surface of the earth in one hour is greater than the total amount of energy that the entire human population requires in a year.
How much energy does the Earth use in a day?
In 2019, the world primary energy consumption was 13.9 billion toe (ton of oil equivalent). With a world population of about 7.7 billion, we now have a world average consumption of primary energy of 58 kWh per day per person.
How much solar energy is received by the Earth per square meter?
At Earth’s average distance from the Sun (about 150 million kilometers), the average intensity of solar energy reaching the top of the atmosphere directly facing the Sun is about 1,360 watts per square meter, according to measurements made by the most recent NASA satellite missions.
How much energy does the Earth get from?
The Earth’s climate is a solar powered system. Globally, over the course of the year, the Earth system—land surfaces, oceans, and atmosphere—absorbs an average of about 240 watts of solar power per square meter (one watt is one joule of energy every second).
Does Earth radiate more energy than receives?
In spite of the enormous transfers of energy into and from the Earth, it maintains a relatively constant temperature because, as a whole, there is little net gain or loss: Earth emits via atmospheric and terrestrial radiation (shifted to longer electromagnetic wavelengths) to space about the same amount of energy as it …
What part of the Earth receives the most solar energy?
The sun’s rays do not strike the Earth’s surface as directly at the North Pole; they are less focused. The equator receives the most solar radiation in a year. The difference in the amount of solar energy the land receives causes the atmosphere to move the way it does.