This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
PSM Chart of equal barometric pressures in and around north america. Chart of equal barometric pressures in and around north america archive org Popular Science Monthly Volume Author PDold Popular Science Monthly illustrations Atmospheric circulation maps
Page 2023 Free-images.com. All images are Public Domain