fredag 4 januari 2013
The Fiction of GHE 2
Is it possible to design a satellite radiometer/infrared thermometer which can measure the temperature of an atmospheric trace gas at the tropopause against a background of blackbody radiation from the Earth surface? This may not be possible if the trace gas has a wide spectrum since the trace gas signal will be swamped by the much stronger blackbody radiation from the Earth surface.
But if the trace gas has a narrow spectrum, like CO2, it may be possible to design a thermometer to have an equally narrow sensitivity and thereby be able to locally separate the weak narrow signal of the trace gas from the wider in total stronger background, and thereby selectively measure the temperature of the trace gas. The design and use of such a 15 micrometer CO2 thermometer is described in
Remember that the ditch in the radiance curve between 550 and 800 is computed from temperature measurement and that GHE thus critically depends on measurement of low temperature under background radiation from high temperature.
After a long search, I think I have finally come to the inner core of the CO2 alarm based on GHE, and understood that it is fiction. The CO2 ditch is also the ditch of GHE.