The Atmosphere
![Panoramic view at Grand Pré, Nova Scotia, Canada showing a rainbow formed by sunlight falling on water droplets condensing from the Atmosphere. JWF Waldron CC-BY-SA-NC](https://pressbooks.openeducationalberta.ca/app/uploads/sites/110/2021/04/rainbowGrandPrejwcrop-scaled.jpg)
In this section we look at the Earth’s Atmosphere, the predominantly gaseous envelope that surrounds the other spheres. First, we give an outline of the composition of the Atmosphere: what gases are included and how they behave. Then we look at atmospheric circulation: how air moves around the Earth in response to incoming solar energy under the influence of the Earth’s rotation. In a third chapter we look at how these changes produce the weather that influences us on a day to day basis. Long-term averaged weather is called climate, but understanding climate requrires us understand interactions with the other spheres of the Earth, so climate is covered in a later section.