The NCAR Mesa Lab will be closed to the public on Saturday morning, July 20, until noon.

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The Whole Atmosphere Community Climate Model is a comprehensive numerical model spanning the range of altitude from the Earth's surface to the thermosphere.

WACCM is capable of running with active or specified land, ocean, and ice components. WACCM-X, which extends WACCM to the upper thermosphere and includes processes important to the ionosphere, bridges from weather and climate to space weather and space climate.