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The Yellowstone National Park is the world's oldest (established in 1872) and has an area of nearly 9,000 km2.

The park's area is geologically active and contains about half of the world's geysers and hydrothermal features. The Yellowstone Lake is located at 2,350 m altitude over a supercaldera (~70 km diameter) that could emit about 2,500 km3 of ash when erupting.

Yellowstone's climate is significantly influenced by the Snake River Plain, a geological feature that formed over millions of years when the North-American tectonic plate moved over the Yellowstone hotspot. This eventually resulted in a 100 km wide channel from the Pacific Ocean into Yellowstone Park, enabling a dominant maritime airflow into the park and adjacent areas. This leads to annual precipitation amounts of up to 2,000 mm in the park's western part, with abundant snow during November - April, as is visible in these Proba-V images covering the four seasons from autumn (upper left) through summer (lower right).


© ESA-BELSPO 2018, produced by VITO
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Discover more about our planet with the Earth from Space video programme. Join ESA every Friday at 10:00 CEST for an 800 km-high tour with spectacular images from Earth-observing satellites.

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The Earth Watching project is an ESA/ESRIN service to help local authorities and to promote the benefits of remote sensing data during emergencies, sending images and articles to newspapers, magazines and TV stations.

The Earth Watching website features not only imagery of natural disasters, but also promotes various satellite remote sensing applications through images and articles. Some examples are shown in the special events part of the website.

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