[M. Dodge Thomas]

Little do you know how close you are to the "truth" of global warming. All of the CO2 data comes from a single NOAA monitoring station located on the slopes of Mauna Loa on the Island of Hawaii.

Atmospheric CO2 levels are monitored at hundreds of sites worldwide, for example about 60 are "core" sites for the NOAA/ESRL Global Monitoring Division.

[muawiyah]

A point on monitoring ~ there are more than a dozen quite serious radio sonde operations within 25 miles of Washington DC.

In the entire country of Congo there is, at the moment, one such site that works.

There used to be three sites but I think the weather guys got eaten in a revolution or something.

There are other equally large parts of the world that are lightly monitored, if at all, from the surface.

Intermittent measurements can be used as a "proxy" for the missing permanant measurement stations. There are "other methods" than "proxy".

Depending on the "method" and its approximation of reality, a major climatological model is going to report out different futures.

I would imagine a highschool computer class could track down the source of the data used by the models referenced by the United Nations (in its forthcoming "official report") if the UN would simply tell us where each and every data point is located.

Might be some surprises in there.