Quote: Originally Posted by
Kirk
Because that was a reference to a one year fluctuation in a 50 year march upward. Look at the raw numbers from Mauna Loa. They tell the real story.
This I believe tells the whole story about the increase of CO2.
The concentration of CO2 in Earth’s atmosphere has increased
during the past century, as shown in Figure 17. The magnitude of
this atmospheric increase is currently about 4 gigatons (Gt C) of carbon
per year. Total hu man industrial CO2 production, primarily from
use of coal, oil, and natural gas and the production of cement, is currently
about 8 Gt C per year (7,56,57). Humans also exhale about 0.6
Gt C per year, which has been sequestered by plants from atmospheric
CO2. Office air concentrations often exceed 1,000 ppm CO2.
To put these figures in perspective, it is estimated that the atmosphere
contains 780 Gt C; the surface ocean contains 1,000 Gt C;
vegetation, soils, and detritus contain 2,000 Gt C; and the intermediate
and deep oceans contain 38,000 Gt C, as CO2 or CO2 hydration
products. Each year, the surface ocean and atmosphere exchange an
estimated 90 Gt C; vegetation and the atmosphere, 100 Gt C; marine
biota and the surface ocean, 50 Gt C; and the surface ocean and the
intermediate and deep oceans, 40 Gt C (56,57).
So great are the magnitudes of these reservoirs, the rates of ex -
change between them, and the uncertainties of these estimated num -
bers that the sources of the recent rise in atmospheric CO2 have not
been determined with certainty (58,59). Atmospheric concentrations
of CO2 are reported to have varied widely over ge logical time, with
peaks, according to some estimates, some 20-fold higher than at
present and lows at approximately 200 ppm (60-62).
Ice-core records are reported to show seven extended periods dur -
ing 650,000 years in which CO2, methane (CH4), and temperature
increased and then decreased (63-65). Ice-core records contain sub -
stantial uncertainties (58), so these correlations are imprecise.
In all seven glacial and inter glacial cycles, the reported changes in
CO2 and CH4 lagged the temperature changes and could not, therefore,
have caused them (66). These fluctuations probably involved
temperature-caused changes in oceanic and terrestrial CO2 and CH4
content. More recent CO2 fluctuations also lag temperature (67,68).
In 1957, Revelle and Seuss (69) estimated that temperature-
caused out-gassing of ocean CO2 would increase atmospheric
CO2 by about 7% per °C temperature rise. The reported change dur -
ing the seven interglacials of the 650,000-year ice core record is
about 5% per °C (63), which agrees with the out-gassing calculation.
Between 1900 and 2006, Antarctic CO2 increased 30% per 0.1 °C
temperature change (72), and world CO2 increased 30% per 0.5 °C.
In addition to ocean out-gassing, CO2 from human use of hydrocarbons
is a new source. Neither this new source nor the older natural
CO2 sources are caus ing atmospheric temperature to change.
The hypothesis that the CO2 rise during the interglacials caused
the temperature to rise requires an increase of about 6 °C per 30%
rise in CO2 as seen in the ice core record. If this hypothesis were correct,
Earth temperatures would have risen about 6 °C between 1900
and 2006, rather than the rise of between 0.1 °C and 0.5 °C, which
actually occurred. This difference is illustrated in Figure 16.
The 650,000-year ice-core record does not, therefore, agree with
the hypothesis of “human-caused global warming,” and, in fact, pro -
vides empirical evidence that invalidates this hypothesis.
http://www.oism.org/pproject/GWReview_OISM600.pdf