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Slide 1
Three proofs of inflated global warming
A. Graphs 1 & 2 claim 2000-2020 was globally
warmer than 1930-50 by 0.6 C deg & the same
amount in the Arctic (red bars = eyeballed
average temp.). This equality is impossible, due
to ‘polar amplification’ (green box).
B. Disproportionate 1920-40 warming vs 1940-75
cooling vs 1975-2020 warming (black bars):
Arctic = 3/4/8
Global = 3/1/9
C. 1975-2020 global warming was supposedly
faster than 1920-40 (Graph 2, compare steepness
of heavy black bars); but the Arctic shows no
change (Graph 1).
‘Polar amplification’ (Wiki): global warming or cooling
is amplified poleward,
e.g. 1975-2020 warming was 2.0 C deg in the Arctic
(Graph 1, green arrow) vs 0.9 C deg globally (Graph 2; in
fact less, see Slide 2)
2.0
0.9
Graph 1. ARCTIC mean annual surface air temp.
Graph 2. GLOBAL mean annual surface air temp.
Conclusions & Sources
(links) for all graphs:
see Slide 3
1.0 C deg
HadCRUT & NASA-GISS temperature data prove
exaggeration of 1975-2020 global warming
Geoclastica Ltd Technical Note 2021-4 Roger Higgs (DPhil, Geology) 11th July 2021 (amended 26th) 3 slides, 10 minutes
1.0 C deg
1850 2020
0.6
0.6
HadCRUT4 data
2 C deg
(Graphs 3-5)
‘Divergence Problem’:
“A temperature trend extracted
from tree rings alone would not
show any substantial warming
since the 1950s” - Wiki
Graph 5. NORTHERN HEMISPHERE temperature, based on tree rings vs thermometers. Briffa et al. 1998
Slide 2. More evidence of global-warming exaggeration ...
D. Deliberate inflation of 1980-2000 & suppression of 1930-50 temperatures, e.g. ...
- NASA’s USA chart published 1999 (Graph 3) shows 1930s/40s hotter than 80s/90s, but this difference was erased in successive
NASA manipulations, as portrayed in two 5-second videos ... http://sealevel.info/GISS_FigD.html
https://stevengoddard.wordpress.com/2013/12/21/thirteen-years-of-nasa-data-tampering-in-six-seconds/
Similarly, the current NASA global chart (Graph 4), like the UK Met Office version (Graph 2), shows the 1980s/90s hotter than the
30s/40s ... note reversal of dashed red bars (eyeballed average temperatures) in Graph 4 vs 3.
E. Global land-air supposedly warming twice as fast as ocean; and, equally inexplicably, only since 1985 (see separation in Graph 4).
F. The ‘Divergence Problem’ (blue box), inadequately explained (Wiki), may simply reflect exaggeration of post-1960 thermometric
temperatures (Graph 5, divergence of thin line), e.g. for thin line in Graph 5, substitute Graph 3 & increase its amplitude.
Graph 3. Contiguous USA (world’s densest temp. network?) surface air temperature 1880-1999. Hansen et al. 1999
Graph 4. GLOBAL near-surface air temperature, land & ocean, 1980-2020. NASA-GISS
1930s hot in USA;
‘Dust Bowl’ (Wiki)
Slide 3. Conclusions
1. 1975-2020 global warming (Graphs 2, 4) is artificially high.
2. This may be due to under-compensation for ‘Urban Heat Island’ effect (Wiki; NB Arctic & Antarctic are nearly
immune).
3. If the 2000s/10s were indeed warmer than the 1930s/40s (Graphs 2, 4), the amount was very small
(extrapolating from the Arctic’s 0.6 C deg [Graph 1] & reducing it for polar amplification).
4. Alternating global warming & cooling of the last 2,000 years correlate much better with the Sun’s magnetic
output (governing cloudiness) than with CO2, which may in fact be irrelevant to climate change ...
https://www.researchgate.net/publication/348689944 https://www.researchgate.net/publication/350726458
5. There is no climate emergency.
Sources of Graphs 1-5
1. http://www.climate4you.com/
2. https://www.metoffice.gov.uk/hadobs/monitoring/index.html
3. https://pubs.giss.nasa.gov/docs/1999/1999_Hansen_ha03200f.pdf
4. https://data.giss.nasa.gov/gistemp/graphs/
5. https://royalsocietypublishing.org/doi/10.1098/rstb.1998.0191