ELI5: Explain Like I'm 5

Chemical transport model

A Chemical Transport Model (CTM) is like a recipe book for air pollution. Just like how you follow a recipe to make a cake, scientists use a CTM to figure out how air pollution moves around in the air.

The CTM recipe book has a lot of ingredients! It has information about things like how much pollution is being put into the air (like from factories or cars), what the weather is like (is it windy or calm?), and what the Earth's surface looks like (are there mountains or oceans?).

Scientists use these ingredients to figure out how air pollution moves around. They can predict things like where it will go, how much there will be, and how it will change over time.

The CTM recipe book is really important because it helps us understand how air pollution affects our health and the environment. By knowing where pollution is coming from and where it's going, we can take steps to reduce it and make the air cleaner for everyone.
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