Throughout this thread. The filters on the SDO instruments themselves record these temperatures.
They don't claim the surface temperature of the photosphere is 4500K. You made that up.
The photosphere is also opaque,
Again, you abuse that term, and you've yet to demonstrate that it has any meaning in terms of the location of solar moss activity. I'm handing you a perfect way to actually "falsify" virtually *all* cathode solar theories, not just a single interpretation of a single blog image. How can you even demonstrate that it makes any difference whatsoever whether or not the photosphere is "opaque" in mainstream terms as it relates to whether or not "solar moss" activity takes place *above* or *below* the surface of the "photosphere"?
and density increases with depth. This requires temperature to increase. There is no way around it.
There is no way around it in *your* model, I'll grant you that. There is no such thing an an "opaque" (as in blocks all light entirely) neon double layer in a Birkeland cathode solar model, so mainstream predictions are irrelevant to me.
You still have not explained how you can have a solid surface at well above 4500K.
I have explained it to you several times now. Unlike in *your falsified* model, the neon double layer is *not* "opaque" in a Birkeland cathode solar model. It's a semi-opaque, non special, current carrying double layer in the solar atmosphere, just the like the corona, just like the chromosphere, and just like the mostly silicon plasma double layer under it.
I'm simply pointing out to you that I've offered you a clear way to differentiate between a standard model interpretation of solar images, and a cathode solar model interpretation of those same images.
Your model makes no particular "predictions" about hot spots on the photosphere and their relationship to magnetic field lines, or their relationship to coronal loops for that matter. Nothing about your model actually *explains* anything, starting with the actual heat source of the corona, or the heat source of flux ropes.
Considering your convection predictions bit the dust in 2012, you've lost your most important energy source for "reconnection", and you have no explanation as to why even a single flux rope reaches millions of degrees.
The standard model is apparently unfalsifiable if those convection prediction failures won't do it. You don't even have a legitimate power source to explain the energy release of a single flare in your model!
Convection never was an 'energy source' as it relates to coronal heating, or flux rope heating. Those processes are "current driven" processes in a cathode solar model. Those convection numbers do not falsify a cathode solar model. They would however falsify mainstream solar theory.
Solar moss events are the real Achilles heal of mainstream solar theory. There is no actual "thin transition region" in SDO images. The flux ropes trace *through* the surface of the photosphere, and follow the contours of the penumbral filaments as *expected* in a cathode solar model and as *predicted* by those sunspot modeling studies.
There's nothing left standing in standard solar theory. Even the mass movements up and through the surface of the photosphere blow *huge chucks* in mainstream solar models.
SDO has already falsified standard solar theory. Whatever survives SDO AIA imagery and HMI data, it won't be the standard solar model.