Again, your conclusions directly contradict the conclusions of the authors. From the "Conclusions" section of the very study you cited, verbatim:
6. Conclusions
The principal conclusions of this work are
The new AIRS infrared spectral data have been successfully added to an ongoing study of spectral signatures of climate change. The 2003 April–June tropical AIRS data compare extremely well with spectra recorded by IRIS and IMG in 1970 and 1997, suggesting considerable stability in the data, and successful normalization of the different instrumental characteristics.
The AIRS, IRIS and IMG spectra have variability statistics that are very similar characteristics, indicating that the variability is dominated by the earth system, not by the characteristics of the different instrument
Differences between observation and simulation are seen, of about 1 K in the atmospheric window, up to +10 K in the ν2 band of H2O, about +5 K in the ozone band at 1043 cm−1, and up to −8 K in the CH4 Q branch. Much of these larger differences may be due to uncertainty in reanalyzed water vapor...
The simulations of both CO2 and CH4 spectra indicate that the upper troposphere and lower stratosphere in the reanalysis datasets are 1–2 K warmer than observed by the spectrally resolving instruments. Simulations of the atmospheric window indicate reanalysis surface temperatures to be too cold by up to 1 K, or perhaps a deficiency in the modeling due to aerosol or continuum effects.
About Climate Change
Read the Article at HuffingtonPost

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