Monday, February 20, 2017

The Growth and Evolution of a Cloud in Three Parts, visible, near infrared, and thermal infrared

I put together a 80 second time-lapse video of a cloud east of NearSys Station. The images were recorded using the BalloonSat Imager that I am developing. The BalloonSat was turned on its side and programmed to record images with its three cameras every few seconds.

The video is now online at my YouTube Channel at,

The resulting video shows the cloud first in visible light. That way viewers can get their bearing. The near infrared image penetrates the atmosphere so well that details in the cloud are much sharper. The final portion of the video shows the cloud during the same time frame, but in heat images.

One thing to note is how the small cumulus cloud that popped up before the cumulonimbus is cooler than the cold stratus cloud above the cumulonimbus.

Here are three screen shots to help illustrate this.

Color Image

Near Infrared Image

Thermal Infrared Image

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