Skip to contentSkip to top navigationSkip to sub navigation Marian Koshland Science Museum of the National Academy of Sciences
Site Map Contact Us
Search
Home   Plan Your Visit   Exhibits   Teach & Learn     News   About
Global Warming Facts and Our Future
  THE GREENHOUSE EFFECT

Natural and Amplified Warming


Natural Warming
The greenhouse effect is a natural warming process. Carbon dioxide (CO2) and certain other gases are always present in the atmosphere. These gases create a warming effect that has some similarity to the warming inside a greenhouse, hence the name “greenhouse effect.”

Graphic of the greenhouse gases
Sunlight brings energy into the climate system; most of it is absorbed by the oceans and land.
 
THE GREENHOUSE EFFECT:
Heat (infrared energy) radiates outward from the warmed surface of the Earth.
Some of the infrared energy is absorbed by greenhouse gases in the atmosphere, which re-emit the energy in all directions.
Some of the infrared energy further warms the Earth.
Some of the infrared energy is emitted into space.
AMPLIFIED GREENHOUSE EFFECT:
Higher concentrations of CO2 and other "greenhouse" gases trap more infrared energy in the atmosphere than occurs naturally. The additional heat further warms the atmosphere and Earth’s surface.
 
 
 
 

Amplified Warming
Increasing the amount of greenhouse gases intensifies the greenhouse effect. Higher concentrations of CO2 and other greenhouse gases trap more infrared energy in the atmosphere than occurs naturally. The additional heat further warms the atmosphere and Earth’s surface.

Visit the Marian Koshland Science Museum to learn more.

Visitors can feel the difference between natural and amplified warming at the museum.

 


Next Section: Carbon Cycle [ next ]

 

Print this Page

The National Academies - Advisers to the Nation on Science, Engineering, and Medicine Back to Top
HOME | PLAN YOUR VISIT | EXHIBITS | TEACH & LEARN | EVENTS | NEWS | ABOUT