Climate Scientist Proves Human Cause
Posted on: August 24, 2018
Climate scientist Peter Cox wrote a climate model computer program with the assumptions that (1) human fossil fuel emissions cause atmospheric CO2 concentration to rise, (2) surface temperature is responsive to atmospheric CO2 concentration according to the theory of the greenhouse effect of CO2. When he ran this program he was amazed to find that his climate model proves that (1) human fossil fuel emissions cause atmospheric CO2 concentration to rise, (2) surface temperature is responsive to atmospheric CO2 concentration according to the theory of the greenhouse effect of CO2. But sadly that relationship is seen only “since the 1970s”.
The green line explains the effect of natural causes.
11 Responses to "Climate Scientist Proves Human Cause"
[…] Climate Scientist Proves Human Cause […]
[…] Climate Scientist Proves Human Cause […]
[…] RESEARCH QUESTION: Although climate models deliver robust and consistent values for the climate sensitivity parameter across time spans and forcing conditions, climate science acknowledges an “uncertainty problem” in the matter of the testable implication of the climate sensitivity hypothesis in empirical temperature data. The empirical data for global mean temperature are available as temperature reconstructions from the instrumental record over long time spans greater than a century, and direct observations of lower troposphere temperature with satellite mounted microwave sounding units since 1979. A comparison of climate sensitivities in these direct observations with those in temperature reconstructions and climate models in the 40-year sample period 1979-2018 is presented in related posts on this site [LINK] [LINK] . These comparison shows gross unexplained differences in climate sensitivities among direct observations, temperature reconstructions, and climate models. However, a weakness of this work may lie in terms of the brief sample period of 40 years if the climate sensitivity mechanism works over longer time spans. However, extending the time span of the study comes at the cost of of losing access to direct observations of global mean temperature and thereby being restricted to reconstructions of global mean temperature the weaknesses of which, demonstrated in related works [LINK] [LINK] , imply that they may contain built-in circular reasoning in terms of empirical tests of climate sensitivity if climate sensitivity was assumed in their construction. This study of climate sensitivity over longer time spans with temperature reconstructions is presented to overcome the time span limitation of direct observations but with the caveat that the data exhibit significant differences from direct observations in the common 40-year period 1979-2018. It must be mentioned that the 40-year period used in the prior study derives some legitimacy in the use of the same time frame as the ideal for establishing human cause of climate change by climate scientists; as described in a related post [LINK] . […]
[…] of surface temperature is found if the time span to be tested is limited to the period 1975-2017 [LINK] […]
[…] 1950 [LINK] , climates scientist Peter Cox has moved it further along to “the 1970s” [LINK] , and many others such as John Braccili has selected an intermediate date in 1960. A rationale for […]
[…] it is shown that the empirical evidence thus presented contains the circular reasoning fallacy [LINK] [LINK] [LINK] […]
[…] [RELATED POST#1] […]
[…] Scientist Peter Cox 2018 [LINK] : It started in the 1970s because it is since then that we see a measurable responsiveness of […]
[…] AGW POSTS: [LINK] [LINK] [LINK] [LINK] [LINK] [LINK] [LINK] […]
[…] Peter Cox used computer models to determine that human caused warming began in the 1970s [LINK]. The world’s first AGW climate change paper was Callendar 1938 [LINK] where we read that […]
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August 26, 2018 at 10:00 am
[…] Climate Scientist Proves Human Cause […]