This is a orbital photo taken by the Space Shuttle Endeavor of the horizon. The standard calculation for Total Solar Irradiance (TSI) assumes the actual surface area of the Earth and does not make any adjustments for altitude. When I have mention in the past that not adjusting for altitude leads to more uncertainty, I have generally been blown off because the impact is only on the order of a half of a percent. Half percent can start adding up after a while.
If the Turbopause altitude is the average altitude of the 184K outer radiant "shell", the error as currently calculated would be about 3% and if the horizon at altitude extends the length of day, that could be another percent or two. 65Wm-2, the effective energy of the Turbopause "shell" is only 4.8 percent of the true Top of the Atmosphere (TOA) TSI.
I am not close to "proving" that the 65 Wm-2 in the Turbopause shell was missed, but most everything I have done indicates that it has been. It definitely would explain a lot of things