The question asked in the last posting was “ If CO2 Emissions Are Not Rising, Why Is Atmospheric CO2 Rising At “Unprecedented” Rates?” The latest news is that the human emissions are flat lining but curiously the record shows that for the last four years, the atmospheric CO2 measured at Mauna Loa, has risen faster than ever.
The warmers tell us that there can be no ambiguity about why the atmospheric CO2 is climbing. It is because the “natural” carbon in the carbon cycle is perfectly balanced and addition of unnatural carbon, in the form of CO2 from the burning of fossil fuels is the cause.
For several years, several skeptics have ventured that the rise in atmospheric CO2 is due to the gradual rise of global temperatures. This thinking coincides with the results of the Antarctic Ice Core data that indicates for hundreds of thousand of years when temperature rises or falls CO2 responds to the change in temperature by rising or falling to match the temperature.
Dr. Murry Salby has been lecturing on his findings that show atmospheric CO2 coincides with changes in global temperature and shows no coincidence with increases in CO2 emissions from fossil fuels. In a nutshell, Salby’s theory says, the rate of change of CO2 in the atmosphere can be described by an equation that demonstrates that it only depends on temperature change.
Looking at Salby’s charts***—The first chart looks at atmospheric CO2 as measured at Mauna Loa from 1990 to 2014 and the second chart looks at fossil fuel emissions for the same period:
Beginning in 2002 (blue vertical line), one can see that the fossil fuel emissions ramped up in 2002. But the upper chart shows the rate of change of the atmospheric CO2 continued unchanged. The man-made global warming theory says that the CO2 from fossil fuels in the atmosphere are the cause of global warming. And that the more fossil fuels produced CO2 that goes into the atmosphere, the result is higher global temperatures. The warmers know that Salby’s finding are a man-made global warming theory killer.
Salby constructs a chart showing the net measured global emission of CO2 from 1980 to 2008. Salby’s data source shows 5 gigatonnes of human carbon that are thoroughly mixed with the 150 gigatonnes of natural carbon. The net emissions are the total increase (or decrease) by year of CO2 in the atmosphere.
The following chart shows the net global emissions increase and decrease. However the net emissions over time are slightly positive, thus the atmospheric CO2 is increasing.
When the human emissions (red line) are superimposed upon the net global emissions chart, one can see there is no correlation between human emissions and net emissions as shown on the following chart.
The next chart looks at the correlation of surface temperature to net carbon emissions:
Clearly the temperature is primary driver of net CO2 emissions. The natural sources of carbon emission (ocean and land) and human emissions, well mixed, increase or decrease net emissions depending on changes of the global surface temperature.
Salby’s video presentation can be viewed by clicking here. (Ignore the “Crock of The Week” comment.) He provides much more in the way of explanation than I have space to use. Further he looks into the issue of CO2 residence time in the atmosphere. The current warmer belief is that a molecule of CO2 put into the atmosphere will take 200 years to depart the atmosphere. Salby believes the time is more in the range of 10 years or less.
Salby has not published his work in the technical journals citing his inability to access his supporting data that Macquarie University in Australia will not release. He was terminated by the University saying Salby acted improperly. According to a number of observers, it was because he was a skeptic in among a big group of warmers. Further, assuming Salby is right, it could probably blow up the theory of man-made global warming . This site prefers to use peer reviewed science where possible, hence I had not previously not written about Salby’s concepts. He is not without independent review, however, with a recent posting on The Hockey Schtick titled: “ Swedish scientist replicates Dr. Murry Salby’s work, finding man-made CO2 does not drive climate change”
***Pardon the look of the charts and the space used . They are screen captures from his video presentation.