Water spout from Strokkur Geysir exploding into the sky on a stormy evening, near Reykjavik, Iceland, Polar Regions

Windswept tree coated in hoar frost on foggy evening at Raddon Hill, Devon, England, United Kingdom, Europe

Launching Weather Balloon, 1944

Picture of an isobar world map in an german encyclopedia from 1914

Snow-covered pressure gauge, Huettenwerk Meiderich steel mill after closure, today Duisburg-Nord Landscape Park, North Rhine-Westphalia, Germany, Europe

Scuba diver blowing bubble rings. As the escaping air rises to surface, the decrease in pressure causes the rings of air to expand.