The First Season of Noctilucent Clouds from AIM
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The Aeronomy of Ice in the Mesosphere (AIM) mission is the first satellite dedicated to the study of noctilucent clouds. Noctilucent clouds, sometimes called Polar Mesospheric Clouds, were first reported in 1885. Forming at altitudes above 50 miles, they are so faint that they can only be seen from the ground in the reflected light of the Sun after it has set below the horizon. Since their discovery, their cause has been a subject of study as a possible indicator of climate change. For those interested in observing noctilucent clouds from the ground, there are images and information at SpaceWeather's Gallery of Noctilucent Clouds.
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This movie presents a daily accumulation of data from the AIM spacecraft for the northern hemisphere. The circular gap over the Earth's geographic pole is due to a gap in the satellite coverage.
Duration: 1.1 minutes
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Opening push-in to the globe.
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A view of the northern hemsphere near the start of the cloud season (May 20, 2007).
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June 16, 2007
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June 23, 2007
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June 28, 2007
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July 9, 2007
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July 15, 2007
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July 20, 2007
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July 24, 2007
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August 1, 2007
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August 4, 2007
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August 5, 2007
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August 10, 2007
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August 15, 2007
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September 2, 2007: The End of the Season for the Northern hemisphere.
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