A NASA Goddard Institute for Space Studies (GISS) compilation of land and oceanic instrumental records of near-surface air temperature do not indicate a cooling trend in recent years, as recently claimed by Bob Wagner in public presentations
Bear in mind that the red line indicates a multi-year average that smooths out year to year noise. The noise is the “weather” of the climate system. Climate trends should only be deduced from decadal averages or longer, not picking out individual years. Climate and weather represent different time scales. Shown here, the instrumental temperature data are aggregated in other ways, e.g. northern hemisphere, southern hemisphere. See, no cooling.
Independent analyses of the same instrumental temperature data (but with an independent/different cooling correction for growth of cities around some of the stations) have been made by the UK Climate Research Unit at School of Environmental Sciences University of East Anglia, Norwich. See an example below…
Here’s more information about the CRU analyses.
So, you think there’s ocean cooling?
Human-induced climate deniers have blown hard about a now obsolete study (Lyman et al, 2006) that identified a (now understood to be spurious) recent cooling trend in ocean heat content data. According to Gavin Schmidt –
“The ‘cooling’ was actually due to combination of a faulty pressure reading on a subset of the [oceanic] floats and a switch between differently-biased observing systems. The pressure error meant that the temperatures were being associated with a point higher in the ocean column than they should have been, and this (given that the ocean cools with depth) introduced a spurious cooling trend when compared to earlier data. This error may be fixable in some cases, but for the time being the suspect data has simply been removed from the analysis. The new results don’t show any cooling at all.”
Isn’t transparency nice! Sorry Bob. You’ve had it wrong. If you’d have stayed current with the science (the discrepancy was identified already nearly 2 years ago! 18 April 2007), you would not now have to retract your misleading statements.