Subject: AKP000k1a9

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Comments

• by Shiphrah

  Why do the mountains look blue sometimes?

  Posted March 8, 2015 1:09 AM

• by Quia

  The images we're looking at aren't all visual light images. Nice readable explanation: http://www.satelliteimpressions.com/landsat.html

  Posted March 8, 2015 3:13 AM

• by Quia

  We're looking at 345 band images on FF. So there's something dark in the red 5 band, which is infra-red, brighter in near IR and visual.

  Posted March 8, 2015 3:17 AM

• by Shiphrah

  Many thanks, @Quia !

  Posted March 8, 2015 5:20 AM

• by Artman40

  So it's not ice, considering the date and time?

  Posted March 8, 2015 2:53 PM

• by Quia

  Snow's possible in these mountains in April, could be some fresh snow lingering on the northern slopes. I haven't been paying enough --

  Posted March 8, 2015 8:47 PM

• by Quia

  --attention to how land-features look in these images to say for sure, reasoning from first principles here. 😃

  Posted March 8, 2015 8:48 PM

• by yshish

  Oh,I thought that saturation/contrast/colors have been changed to make faint kelp forests visible better:] which has affected blue color too

  Posted March 8, 2015 10:05 PM