@TalusDice @EcoSenseNow There's no question that CO2 emissions causes a little bit of warming. But there's no evidence it is harmful, and much of the claimed warming is actually revisions to the data.
"You can prove anything if you can make up your data."
- Dr. Jerry Pournelle
@TalusDice @EcoSenseNow Actual warming is so slight it's very hard to measure, and much of that reported slight warming is from revising / "homogenizing" old data.
The trends are unnoticeable "on the ground" in most places, because they're dwarfed by local & regional variations.
@TalusDice @EcoSenseNow Here's Hansen et al 1999:
pubs.giss.nasa.gov/abs/ha03200f.h…
This is their graph of annually averaged U.S. temperatures (I added the red annotations identifying 1934, 1979 & 1998):
sealevel.info/fig1x_1999_hig…
@TalusDice @EcoSenseNow Excerpt:
"U.S. temperature increased by about 0.8°C between [1880s & 1930s], but it then fell by about 0.7°C between 1930 and the 1970s and regained only about 0.3°C of this between the 1970s and the 1990s… 1998 was the warmest year of recent decades…"
@TalusDice @EcoSenseNow Of course, that was before NCDC's revisions to the data.
Note that their revision of the relative magnitudes of the 1934 & 1988 U.S. temperature peaks is LARGER than the 0.5°C of additional warming which activists claim would be a global disaster.
sealevel.info/GASA_GISS_US_T…
@TalusDice @EcoSenseNow But if such a small temperature difference is so inconsequential that it can't be reliably measured (a fact proven by the revisions), then how can an even smaller temperature change be so enormously consequential that activists call it a "crisis" or "catastrophe" or "emergency"?
@TalusDice @EcoSenseNow The answer is that it can't. The activists are preaching nonsense.
@TalusDice @EcoSenseNow The best evidence shows that manmade climate change is real, but modest & benign, and CO2 emissions are highly beneficial.
The major harms are all merely hypothetical (& mostly implausible). The benefits are real, measured & very large.
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