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CO2 Data Selection

NOAA CO2 Global Data Set Readme

The retained values comprise the data set that we feel
best represents the CO2 distribution in the remote,
well-mixed global troposphere. These are the values
we use to calculate long-term trends and interannual
and seasonal variations in our studies of the global
carbon cycle. It is possible, and even likely, that
some of the values flagged as not representative of
background conditions are valid measurements, but
represent poorly mixed air masses influenced by local
or regional anthropogenic sources or strong local
biospheric sources or sinks. Users of these data
should be aware that data selection is a difficult
but necessary aspect of the analysis and interpretation
of atmospheric trace gas data sets, and the specific
data selection scheme used may be determined by the
goals of a particular investigation.

They feel the data they present is what it "should" be and is selected according to the goal of what they are looking for - is that an accurate summary?

Comments

...is that an accurate summary?

It depends. If you mean "have they cooked the data to get exactly the answer they want" then I don't necessarily think so.
But, even if one doesn't like their methods at least they've had the decency to supply the raw data and explain how they did the analysis so that anyone else is free to try an alternative analysis if they wish.

knirr. Is English your first language? If so please just re-read the first sentence a couple of times...

The retained values comprise the data set that we feel
best represents the CO2 distribution in the remote,
well-mixed global troposphere.

...THAT WE FEEL...

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