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What is climate change? A definition from the Department of Ecology of Washington State reads: Climate includes patterns of temperature, precipitation, humidity, wind and seasons. It affects more than just a change in the weather and refers to seasonal changes over a long period of time. These climate patterns play a fundamental role in shaping natural ecosystems, and the human economies and cultures that depend on them.

It may be used inter-changably with global warming as they’re closely related. Global warming causes climates to change. Here is NASA discussion on the two terms, What's In A Name?

We recommend you listen and learn which is the best advice we can give to begin to understand the challenges before us.

Curated by mokiethecat

NASA | Ask a Climate Scientist: CO2 and Temperature by Dr. Hildebrand

Is there any merit to the studies that show that historical CO2 levels lag behind temperature, and not lead them?
Yes, there's merit to those studies, says Peter Hildebrand, Director of the Earth Science Division at NASA's Goddard Space Flight Center, responding to a question from Twitter (https://twitter.com/Seth_b_clark/stat...).

In the pre-industrial age, the CO2 response to temperature was that the temperature would go up and CO2 would go up. Or if the temperature went down, CO2 would go down. Because when the temperature rose, the whole biosphere revved up and emitted CO2. So we understand that process.

In the post-industrial age, the opposite is true. Increasing CO2 in the atmosphere is leading to increased temperature. So two different things happened, one pre-industrial, where temperature was driving the CO2, and post-industrial, where CO2 was driving temperature. Which means a completely different physical-biological process is going on.Published on Sep 24, 2013



For more about Ask A Climate Scientist, go here: http://www.youtube.com/watch?v=49Lu1d...

EarthSayer Peter Hildebrand

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