SSDD
Gold Member
- Nov 6, 2012
- 16,672
- 1,966
- 280
Got nothing definitive to prove my point. Lots of research available on the subject. The world seems to be getting warmer. Atmospheric CO2 is at a high level and climbing rapidly. At this point, there is little we can do about it as carbon fuel consumption and CO2 emissions continue to grow. We humans are a factor but we are adaptable.
Since the absorption of IR by CO2 having a coherent relationship with warming in the atmosphere is the entire point, don't you find it a bit odd that you would have to tell me that you have nothing definitive with which to prove your point? Considering that warmers are telling us that we must spend trillions of dollars, adjust the way we live, and do irreparable harm to whole economies, wouldn't you think that definitive evidence would be inescapable?...front page of every newspaper.....billboards...full page ads in every magazine...SMOKING GUN FOUND...and mountains of definitive, indisputable evidence?....wouldn't you expect that rather than having to meekly admit that you have nothing definitive?
And "the world" isn't getting warmer. Some regions are warming...some regions are cooling, and a great many regions are not doing much of anything at all. I started a thread a while back titled "if the globe isn't warming, why is it called global warming. In that thread I provided quite a few regional temperature graphs...some were warming, more were cooling, and more than that were not changing in any significant way. "Global" warming only shows up in the heavily adjusted, homogenized, infilled global product produced by government agencies...most regional records don't show the same thing.
And the temperature increases we are seeing are well within the limits of natural variability. In fact, nothing that we are seeing in the global climate is even beginning to approach the known limits of natural variability.
As to CO2 levels, actual research calls into question whether or not we have any significant influence on global atmospheric CO2 levels. Our contributions don't even offset the natural variation in the earth's own CO2 making machinery from year to year. The claim that we are driving up CO2 levels is patently false.
https://www.researchgate.net/public...SPHERIC_CO2_TO_ANTHROPOGENIC_EMISSIONS_A_NOTE
Clip: “A necessary condition for the theory of anthropogenic global warming is that there should be a close correlation between annual fluctuations of atmospheric CO2 and the annual rate of anthropogenic CO2 emissions.Data on atmospheric CO2 and anthropogenic emissions provided by the Mauna Loa measuring station and the CDIAC in the period 1959-2011 were studied using detrended correlation analysis to determine whether, net of their common long term upward trends, the rate of change in atmospheric CO2 is responsive to the rate of anthropogenic emissions in a shorter time scale from year to year. … [R]esults do not indicate a measurable year to year effect of annual anthropogenic emissions on the annual rate of CO2 accumulation in the atmosphere."
https://www.researchgate.net/public...spheric_carbon_dioxide_and_global_temperature
Clip: Conclusion:
“There exist a clear phase relationship between changes of atmospheric CO2 and the different global temperature records, whetherrepresenting sea surface temperature, surface air temperature, or lower troposphere temperature, with changes in the amount of atmospheric CO2 always lagging behind corresponding changes in temperature.”
(1) The overall global temperature change sequence of events appears to be from 1) the ocean surface to 2) the land surface to 3) the lower troposphere.
(2) Changes in global atmospheric CO2 are lagging about 11–12 months behind changes in global sea surface temperature.
(3) Changes in global atmospheric CO2 are lagging 9.5–10 months behind changes in global air surface temperature.
(4) Changes in global atmospheric CO2 are lagging about 9 months behind changes in global lower troposphere temperature.
(5) Changes in ocean temperatures appear to explain a substantial part of the observed changes in atmospheric CO2 since January 1980.
(6) CO2 released from anthropogenic sources apparently has little influence on the observed changes in atmospheric CO2, and changes in atmospheric CO2 are not tracking changes in human emissions.
(7) On the time scale investigated, the overriding effect of large volcanic eruptions appears to be a reduction of atmospheric CO2, presumably due to the dominance of associated cooling effects from clouds associated with volcanic gases/aerosols and volcanic debris.
(8) Since at least 1980 changes in global temperature, and presumably especially southern ocean temperature, appear to represent a major control on changes in atmospheric CO2.
SAGE Journals: Your gateway to world-class journal research
Clip: “[T]he warming and cooling of the ocean waters control how much CO2 is exchanged with atmosphere and thereby controlling the concentration of atmospheric CO2. It is obvious that when the oceans are cooled, in this case due to volcanic eruptions or La Niña events, they release less CO2 and when it was an extremely warm year, due to an El Niño, the oceans release more CO2. [D]uring the measured time 1979 to 2006 there has been a continued natural increase in temperature causing a continued increase of CO2 released into the atmosphere. This implies that temperature variations caused by El Niños, La Niñas, volcanic eruptions, varying cloud formations and ultimately the varying solar irradiation control the amount of CO2 which is leaving or being absorbed by the oceans.”
And older work suggests the same thing:
https://www2.meteo.uni-bonn.de/bibliothek/Flohn_Publikationen/K287-K320_1981-1985/K299.pdf
clip: “The recent increase of the CO2-content of air varies distinctly from year to year, rather independent from the irregular annual increase of global CO2-production from fossil fuel and cement, which has since 1973 decreased from about 4.5 percent to 2.25 percent per year (Rotty 1981).”
“Comparative investigations (Keeling and Bacastow 1977, Newll et al. 1978, Angell 1981) found a positive correlation between the rate of increase of atmospheric CO2 and the fluctuations of sea surface temperature (SST) in the equatorial Pacific, which are caused by rather abrupt changes between upwelling cool water and downwelling warm water (“El Niño”) in the eastern equatorial Pacific. Indeed the cool upwelling water is not only rich in (anorganic) CO2 but also in nutrients and organisms. (algae) which consume much atmospheric CO2 in organic form, thus reducing the increase in atmospehreic CO2. Conversely the warm water of tropical oceans, with SST near 27°C, is barren, thus leading to a reduction of CO2 uptake by the ocean and greater increase of the CO2. … A crude estimate of these differences is demonstrated by the fact that during the period 1958-1974, the average CO2-increase within five selective years with prevailing cool water only 0.57 ppm/a [per year], while during five years with prevailing warm water it was 1.11 ppm/a. Thus in a a warm water year, more than one Gt (1015 g) carbon is additionally injected into the atmosphere, in comparison to a cold water year.”
Century-Scale Shifts in Early Holocene Atmospheric CO2 Concentration
Clip: Century-Scale Shifts in Early Holocene Atmospheric CO, Concentration
“The initial decrease of the SI in the Friesland phase [~11,400 years ago] suggests that atmospheric CO2 concentrations rose by ∼65 ppmv in less than a century. … Our results falsify the concept of relatively stabilized Holocene CO2 concentrations of 270 to 280 ppmv until the industrial revolution. Si-based C02 reconstructions may even suggest that, during the early Holocene, atmospheric CO2 concentrations that were >300 ppmv could have been the rule rather than the exception.”
https://pdfs.semanticscholar.org/d9d9/eb6e213a1fa8fec2c877685baa81817b15a5.pdf
Clip: “In few fields considered to be science-based has there been such a high degree of polarization and refusal to consider alternate explanations of natural phenomena as in climate change at present.”
“The scenario seems to be that between 1985 and 1988, a decision was made to present pre-1958 CO2 concentrations with no humps or dips and to proclaim a pre-industrial level of 280 ppm.”
“Compared with the so-called pre-industrial levels of 280 ppm, a level of 410 ppm was found in 1812, rising to 450 ppm in 1825. There were levels of 370 ppm in 1857, and 4 sets of measurements gave 350–415 ppm around 1940 (Figure 10). From 1870–1920 values remained within 295–310 ppm. From 1955–1965 the values were 325 ppm. Beck chose the most carefully done assays for this graph. One was from Poona, India. An effort not described by Beck was one of 350 determinations near Point Barrow, Alaska, from 1947–1949, with a mean result of 420 ppm (Hock et al., 1952).”
“The CO2 levels found at Mauna Loa range from 315 ppm in 1957 to 385 ppm in 2007, a period of 50 years. They are similar on Antarctica, showing good mixing of the atmosphere. Since there was a bigger rise from 312 to 415 ppm from 1927–1944 (27 years), shown by chemical assays as described above (Figure 10), there should be no reason for alarm at present. The start of the infrared data in 1958 showed a CO2 concentration that was 12 ppm lower by NDIR assay than the best chemical data of the period. The chemical data are very consistent with each other. This discrepancy has never been resolved.”
“From 0–60° north, the period from 1905–1940 showed about 1 °C of warming, then steady or dropping temperatures. The 60–70° north record showed about 1.8 °C of warming from 1922–1960, with sinking temperatures thereafter (Kushnir, 1994). This is the reason why the chemical assays registered a large increase in atmospheric CO2, from 295 ppm in 1885 to 440 ppm in 1944 (Figure 10). Ocean cooling of ~0.6 °C from 1940– 1970 (Kushnir, 1994) brought CO2 levels down for a while to 325 ppm from 1955–1965 (Figure 10).”
http://www.langtoninfo.com/web_content/9780521767187_frontmatter.pdf
“The resemblance between observed changes of CO2 and those anticipated from increased surface temperature also points to a major inconsistency between proxy records of previous climate. Proxy CO2 from the ice core record indicates a sharp increase after the nineteenth century. At earlier times, proxy CO2 becomes amorphous: Nearly homogeneous on time scales shorter than millennial, the ice core record implies virtually no change of atmospheric CO2. According to the above sensitivity, it therefore implies a global-mean climate that is “static,” largely devoid of changes in GMT and CO2. Proxy temperature (Fig. 1.45), on the other hand, exhibits centennial changes of GMT during the last millennium, as large as 0.5–1.0◦ K. In counterpart reconstructions, those changes are even greater (Section 1.6.2). It is noteworthy that, unlike proxy CO2 from the ice core record, proxy temperature in Fig. 1.45 rests on a variety of independent properties. In light of the observed sensitivity, those centennial changes of GMT must be attended by significant changes of CO2 during the last millennium. They reflect a global-mean climate that is “dynamic,” wherein GMT and CO2 change on a wide range of time scales. The two proxies of previous climate [global temperatures and CO2 concentration values] are incompatible. They cannot both be correct.” pg. 254
Is the airborne fraction of anthropogenic CO2 emissions increasing?
Clip: “[T]he trend in the airborne fraction [ratio of CO2 accumulating in the atmosphere to the CO2 flux into the atmosphere due to human activity] since 1850 has been 0.7 ± 1.4% per decade, i.e. close to and not significantly different from zero. The analysis further shows that the statistical model of a constant airborne fraction agrees best with the available data if emissions from land use change are scaled down to 82% or less of their original estimates. Despite the predictions of coupled climate-carbon cycle models, no trend in the airborne fraction can be found.”