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Thread: NASA satellite captures first view of 'night-shining' clouds

  1. #1 NASA satellite captures first view of 'night-shining' clouds 
    Join Date
    Jun 2007
    NASA satellite captures first view of 'night-shining' clouds

    Contact: Tabatha Thompson
    NASA/Goddard Space Flight Center

    These mystifying clouds are called Polar Mesospheric Clouds, or PMCs, when they are viewed from space and referred to as "night-shining" clouds, or noctilucent clouds, when viewed by observers on Earth. The clouds form during the Northern Hemisphere's summer season that begins in mid-May and extends through the end of August. They are being seen by AIM's instruments more frequently as the season progresses. The clouds also are seen in the high latitudes of the Southern Hemisphere during the summer months.

    Very little is known about how these clouds form over the poles, why they are being seen more frequently and at lower latitudes than ever before, or why they have been growing brighter. AIM will observe two complete polar mesospheric cloud seasons over both poles, documenting for the first time the entire, complex life cycle of PMCs.

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  3. #2  
    Forum Freshman
    Join Date
    Sep 2007
    Well, its been about 5 months since this alert about the noctilucent clouds.
    Scientists were supposed to have met at Fairbanks in August of this year (2007) to discuss the findings of NASA's AIM mission (Aeronomy of Ice in the Mesosphere)
    I've been looking but haven't been able to find the results/conclusions of the mission. I went to the NASA website for related news about AIM, but it didn't have any new information I could find:

    Hampton University, experts in this inquiry, with NASA links seem not to have figured it out yet either:

    Does anybody know if there's been any consensus on the cause of the recently increasing noctilucent clouds:

    Do you think its greenhouse gases.
    Or could it be the exhaust from space shuttle flights.
    Or could it be from an influx of small comets (extraterrestrial source)

    greenhouse gases:

    space shuttle exhaust:


    What do you think.


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