if the sun is not brighter and the sun-to-earth distance has not decreased, where does this extra heat come from?

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09-12-2022
Physics

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if the sun is not brighter and the sun-to-earth distance has not decreased, where does this extra heat come from?

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saishreechandan907 saishreechandan907 · Answer 1 · 2022-12-16T05:55:31-05:00

The sun's brightness is not increasing, nor has the separation between it and Earth. The greater heat must result from the atmosphere's greenhouse gases absorbing more infrared energy.

A greenhouse gas, often known as a greenhouse gas (GHG or GhG), is a gas that produces the greenhouse effect by both absorbing and emitting radiant radiation in the thermal infrared range. Water vapour, carbon dioxide, methane, nitrous oxide, and ozone are the main greenhouse gases in the Earth's atmosphere (O3). Instead of the current average of 15 °C (59 °F), without greenhouse gases, the temperature of the Earth's surface would be closer to 18 °C (0 °F). Also containing greenhouse gases are the atmospheres of Venus, Mars, and Titan.

The amount of carbon dioxide in the atmosphere has grown by more than 50% due to human activity since the start of the Industrial Revolution (about 1750), rising from 280 parts per million in 1750 to 421 parts per million in 2022.

Learn more about Greenhouse gases here:

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