Here's something you might be able to get your teeth into. Direct measurements of greenhouse radiation with all your bullshit objections taken for what they're worth.
Measurements of the Radiative Surface Forcing of Climate (
P1.7 Measurements of the Radiative Surface Forcing of Climate (2006 - Annual2006_18climatevari))
W.F.J. Evans*, Northwest Research Associates, Bellevue, WA / Trent University, Peterborough, Ontario and E. Puckrin, Defense R&D Canada-Valcartier, Val-Belair, Quebec
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an ongoing program of measurements of the downward atmospheric infrared radiation, otherwise known as the greenhouse radiation of the atmosphere, was undertaken at Trent University in Peterborough, Ontario (44o N, 78o W).
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The measurements have been obtained using commercial Fourier-transform infrared (FTIR) spectrometers. These measurements have been used to quantify the radiative flux associated with a number of greenhouse gases. It is this radiative flux that provides an additional source of warming for the planet’s surface, and ultimately is responsible for any change in climate. We have provided the first direct measurements of the greenhouse effect for a number of trace gases in the atmosphere. These gases include trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), carbon tetrachloride (CCl4), methane (CH4), nitrous oxide (N2O), carbon monoxide (CO), nitric acid (HNO3), and tropospheric ozone (Evans and Puckrin, 1994-1997; Puckrin et al., 1996). Not only do these results prove that an increase in the greenhouse effect is real, and that trace gases in the atmosphere are adding a significant radiative burden to the energy budget of the atmosphere, but they also provide a means of validating the predictions that are made by global warming models (Ellingson et al., 1991). This last point is crucial since the temperature increases predicted by the various climate models can vary by several degrees; even a change of 0.7°C can have significant consequences on different parts of the globe. The cause of the large uncertainty in the models resides in the difficulty of accurately predicting the climate feedback mechanisms that are associated with the interaction of oceans, vegetation, and clouds and water vapour with the greenhouse effect.
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METHODOLOGY The measurements of the downward atmospheric thermal emission were collected using a Magna 550 FTIR spectrometer or a high resolution Bomem DA8 system; the instruments were capable of resolutions of 0.25 cm-1 and 0.02 cm-1, respectively. Both instruments incorporated a liquid-nitrogencooled, narrow-band, MCT detector with a 1 mm2 element. The downward zenith sky radiation from the clear sky was collected by positioning a gold-coated mirror at the emission port along the optical axis of the instrument. A stored-phase correction was applied to the measured interferogram before conversion was made to the spectral domain in order to account for phase changes that were present at 750 and 2000 cm-1. The thermal emission background of the instrument was characterized by measuring a negligible source of thermal radiation which consisted of a blackened dewar containing liquid nitrogen. The background measurement was taken immediately prior to and after the measurement of the sky radiation to ensure that the spectrometer was thermally stabilized. The calibration of the atmospheric measurements was performed by placing an ambient blackbody source beneath the gold mirror, filling the field-of-view of the spectrometer. The temperature of the blackbody was monitored by a chromelalumel thermocouple. The atmospheric emission measurements required 15-30 minutes of observing time. This resulted in a typical root-mean-square noise value of about 5.0×10-9 W/(cm2 sr cm-1) in the midinfrared region. The greenhouse radiation from tropospheric ozone was measured by a technique in which the base of cold clouds was used as a target. The thermal emission from the warm atmosphere below the cloud was measured against the low background emission from the cold cloud base (Puckrin et al., 1996). The cloud also screened out the emission from the stratospheric ozone above it, effectively restricting the sampling area to the lower troposphere.
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Figure 1. A spectrum of the greenhouse radiation at the surface measured for February, 1996, showing the contributions of several greenhouse gases
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View attachment 230548
From AR5, WG-1 "The Physical Science Basis" chapter 8