Atmosphere

Italy’s Majestic Mount Etna
Image

Italy’s Majestic Mount Etna

The volcano’s long history of eruptions has influenced eastern Sicily’s physical topography as well as how people interact with the land.

Published Jul 20, 2025

Image of the Day Atmosphere Land

Cloud Streets Over the Laptev Sea
Image

Cloud Streets Over the Laptev Sea

The striking cloud formation developed over Arctic waters north of Siberia in July 2025 as frigid air met warmer open water.

Published Jul 18, 2025

Image of the Day Atmosphere Snow and Ice

Manitoba Burning
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Manitoba Burning

Skies are full of smoke in parts of the Canadian province as thousands of people face evacuation orders.

Published Jul 10, 2025

Image of the Day Atmosphere Land Fires

Cloud Fraction
Global Maps

Cloud Fraction

In addition to making rain and snow, clouds can have a warming or cooling influence depending on their altitude, type, and when they form. These maps show what fraction of an area was cloudy each month.

Feb 2000 — Jun 2025

Atmosphere

Aerosol Optical Depth
Global Maps

Aerosol Optical Depth

Airborne aerosols can cause or prevent cloud formation and harm human health. These maps depict aerosol concentrations in the air based on how the tiny particles reflect or absorb visible and infrared light.

Mar 2000 — Jun 2025

Atmosphere