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It is not being glossed over, there are inconsistencies in all of the data collection methodologies.The point being glossed over is that surface temperature stations take a direct measurement of temperature while satellites measure radiance and temperature measurements are extrapolated from that with various models - there is not even a real consensus on which models to use and depending on the model used there is a huge variance in temperatures extrapolated. You also have the issue of orbital variance, differences in sensors between satellites, deterioration in sensors over time and so on. This is why the majority of the scientific community considers surface measurements to be far superior to the satellite datasets and see the value in satellite datasets in their showing a cooling stratosphere - which is exactly what we would expect to see as co2 ppm increased over time.
Its all well discussed here: https://en.wikipedia.org/wiki/Satellite_temperature_measurements
the satellite and balloon measurements are likely just a good or better than the ground stations.
Read what the GISS says about the Surface Air Temperature.
Data.GISS: GISTEMP ? The Elusive Absolute Surface Air Temperature
It does not sound like there is a standard methodology.Q. What do we mean by daily mean SAT?
A. Again, there is no universally accepted correct answer. Should we note the temperature every 6 hours and report the mean, should we do it every 2 hours, hourly, have a machine record it every second, or simply take the average of the highest and lowest temperature of the day? On some days the various methods may lead to drastically different results.
Near the ground, micro climates vary several degrees within a few yards.
You also have to ask yourself what are we trying to measure?
In the IPCC's key concept documents, they talk about warming in the surface troposphere,
not the Surface Air Temperature.
http://www.grida.no/climate/ipcc_tar/wg1/pdf/tar-01.pdf
The satellites and balloons are likely more accurate measures of the surface troposphere,To counteract this imbalance, the temperature of the surface-troposphere
system would have to increase by 1.2°C
the Surface Air Temperature, could swing wildly based on local micro climates.