Comments on: Contrail to Distrail http://contrailscience.com/contrail-to-distrail/ The Science and Pseudoscience of Contrails and Chemtrails Fri, 30 Jul 2010 12:56:08 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Uncinus http://contrailscience.com/contrail-to-distrail/#comment-3773 Uncinus Sat, 30 Aug 2008 21:08:37 +0000 http://contrailscience.com/contrail-to-distrail/#comment-3773 Yes, just about any "pretty" photo of clouds has been enhanced in some way - usually just increasing the contrast. Yes, just about any “pretty” photo of clouds has been enhanced in some way – usually just increasing the contrast.

]]> By: jazzroc http://contrailscience.com/contrail-to-distrail/#comment-3771 jazzroc Sat, 30 Aug 2008 19:04:55 +0000 http://contrailscience.com/contrail-to-distrail/#comment-3771 Just a note: When the sun is close to the horizon at dawn or dusk, then its light passes through more of the atmosphere, and the blue component of the light is subject to more scattering. This will cause lower clouds in the atmosphere to be lit by a yellower light. By post-processing, this has been exaggerated. Another thing that can happen is that under lower light levels the light reflected back from the ground can backlight the lower clouds with green or red light, depending on the colour of the earth or vegetation. Just a note:

When the sun is close to the horizon at dawn or dusk, then its light passes through more of the atmosphere, and the blue component of the light is subject to more scattering.

This will cause lower clouds in the atmosphere to be lit by a yellower light. By post-processing, this has been exaggerated.

Another thing that can happen is that under lower light levels the light reflected back from the ground can backlight the lower clouds with green or red light, depending on the colour of the earth or vegetation.

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