Now that at least one member of the Hockey team has acknowledged that the cooling in the 1970s was both real and natural, we can analyze older data which was not perturbed by people with an agenda to prove global warming. The graph below compares NCAR’s 1970s temperatures vs. atmospheric CO2.
As you can see, there isn’t much of a correlation – the graph is almost flat.
Since then, the official temperature data has been massaged many times to make the past colder and the present warmer. So it is useful to do a correlation using data from the pre-agenda climate era.
Here is what people wanted to do to solve the climate problem of 1975
Climatologists are pessimistic that political leaders will take any positive action to compensate for the climatic change, or even to allay its effects. They concede that some of the more spectacular solutions proposed, such as melting the Arctic ice cap by covering it with black soot or diverting arctic rivers, might create problems far greater than those they solve. But the scientists see few signs that government leaders anywhere are even prepared to take the simple measures of stockpiling food or of introducing the variables of climatic uncertainty into economic projections of future food supplies. The longer the planners delay, the more difficult will they find it to cope with climatic change once the results become grim reality.
Data used in the graph :
293.6 0.1 294.6 0.02 294.8 0.32 297.6 0.39 298.9 0.14 300.1 0.3 300.4 0.3 301.7 0.3 305 0.38 307.7 0.7 310.3 0.65 310.3 0.87 310.3 0.81 311.5 0.46 314.2 0.3 318.99 0.38 325.68 0.23