What Is the Greenhouse Effect?

Earth is a comfortable place for living things due to its ideal temperatures. One significant reason for this is the greenhouse effect. A greenhouse, with its glass walls and roof, allows sunlight in while trapping heat, keeping plants warm even in cold weather.

Similarly, Earth's atmosphere, a jacket of gases, acts like a greenhouse. During the day, the sun warms Earth's surface. At night, as the surface cools, heat is released back into the air. However, certain gases in the atmosphere, called greenhouse gases (like carbon dioxide, water vapor, and methane), trap some of this heat, keeping Earth warm.

While a balance of greenhouse gases is essential, human activities, such as burning fossil fuels, are increasing the amount of carbon dioxide in the atmosphere. This excess of greenhouse gases can trap more heat, leading to a warmer Earth.

NASA satellites continuously monitor atmospheric gases from space, observing increases in carbon dioxide and other greenhouse gases. This data helps scientists understand the sources of these gases and their impact on our climate, aiding in a better understanding of our planet, our 'greenhouse' home.