Real-time wind map

Real-time wind map

You have to see this for yourself—the image above doesn’t do this map justice. The real-time patterns of wind across the lower 48 are mesmerizingly beautiful.

(What does this have to do with density? Wind is just air moving from high to low pressure, or in other words areas of high density to areas of low density.)

Via Samuel Arbesman.

Thanks to the support of readers like you, Per Square Mile remains independent and ad-free.

If you enjoy what you read, please consider supporting the site with a donation.