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Right below where the sun is should be the most intense reflection in the observer's point of view, right? Because at that point does everything line up based on the distance of the ground and observer and sun, and so there is the most concentrated light. The camera can bounce around all it wants, but that spot will not move unless the location of the camera over the ground moves (and at that altitude it would have to move miles) or the sun would similarly have to move by a large amount. Or am I missing what you were talking about? Is it not similar to the reflection on a lake? I have observed something similar but different when I put a camera on an RC airplane. There was a bright spot on the ground that seemed to follow where the camera was over the ground. The bright spot surrounded the shadow of the plane because those rays of light were most in line with the camera, and would bounce straight back to it.

No, it's not similar to the reflection on the lake, as that is caused by the specular reflection on a clear surface (mirrors and water), and specular reflection would come toward the viewer, as it does across a body of water, because it's an optical illusion where you see more brightly the reflection that is moving toward you.  That's why it follows the viewer.  It's a reflection that enters the viewer's eyes, or the camera's lens.  Firstly, clouds are not conducive to specular reflection like still water or mirrors or glass, so they would not create a specular reflection, and, secondly, if that's what was going on here, you would see the light coming all the way toward the camera.

It is my understanding that many surfaces are capable of producing a specular reflection, though not all with the same efficiency. Would some mirages classify as a specular reflection where the angle to the ground is so shallow that the ground becomes smooth and mirror like, being less able to scatter light at those shallow angles? Looking up the term I see that specular reflection means a perfectly non scattered reflection. Some surfaces will still reflect light mostly in the same direction with only some diffusion or scattering. Surely you know this and have observed it.

It must be kept in consideration the scale of things in your screen shot. Even clouds can appear to reflect light, though somewhat diffuse, when viewed from far enough away and at a shallow enough angle. The light would not come all the way toward the camera like on water because the clouds closer to the camera are very rough textured, which diffuses the light a lot more. I think this would compare to seeing the sunlight reflect off a lake that has undisturbed water in the distance, but lots of waves closer to the observer. 

The scale of this is important because as distance increases from an object that is reflecting light, it becomes relatively brighter based on the density of the light. I probably got something wrong there, but I hope you understand what I'm trying to say.