Some important aspects were not understood back then, like the role of greenhouse gases other than CO2, of aerosol particles and
of ocean heat storage.
Like all models, it has its quirks — an absolute surface temperature that's a bit too low,
projections of ocean heat uptake that are a bit too high.
Change in global ocean heat content between the surface and 2000 meters of depth from 1958 to 2017 (top) and
distribution of ocean heat content anomalies in 2017 (bottom).
On time scales varying from a few years to millions of years, storage and
ventilation of ocean heat has been the earth's true climate control knob.
The regional scale of the decline made scientists strongly suspect that an increase in the influx
of ocean heat beneath the ice shelves must have taken place.
Another issue is whether the spatial and temporal
sampling of the ocean heat content accurately captures the regions and depths at which heat changes are occurring.
New
estimates of ocean heat content show a growing large discrepancy between ocean heat content integrated for the upper 300 vs 700 vs total depth.
This new research combines
measurements of ocean heat, land and atmosphere warming and ice melting to find that our climate system continued to accumulate heat through to 2008.
Seems to me you have a
model of ocean heat transfer in your head and you disbelieve the observations of deep ocean heat buildup because your model can't explain it.
Keeling studies the argon levels in the atmosphere to get a similar record
of ocean heat going back a few decades.
What's very unfortunate in the Schwartz paper is the following, however: «However in a subsequent publication a year later Lyman et al. [2006] reported a rapid net
loss of ocean heat for 2003 - 2005 that led those investigators to estimate... a value much more consistent with the long - term record in the Levitus et al. [2005] data set.»
What is new is that the rate and patterns
of ocean heat gain are revealed over a period as short as eight years, thanks to the Argo array, that the warming signal is shown to extend to 2,000 meters and deeper, and that it is occurring predominantly in the Southern Hemisphere ocean south of 20 ° S,» said Roemmich.