Reproducing the Mid-Piacenzian Warm Period Climate in the 2020s.

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Authors

Richard Michael BLABER 

Abstract

The current expectation of climatologists is that levels of atmospheric carbon dioxide (CO2) and other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O), will correspond, in the 2020s, to an increase in mean annual global near-surface atmospheric temperature of less than 1.5°C above the pre-industrial Holocene norm (1750 baseline; atmospheric CO2 = 278 ppm). This paper will argue, contrarily, that it is not possible to reproduce the atmospheric chemistry of the Mid-Piacenzian Warm Period (3.3-3 Mya) of the Pliocene Epoch, 5.3-2.588 Mya, without also reproducing its climate, and that – consequently – we can expect to see global warming of 3°C this decade.

DOI

https://doi.org/10.31223/X5T97M

Subjects

Physical Sciences and Mathematics

Keywords

climate; anthropogenic climate change; carbon dioxide (CO2); other greenhouse gases; global warming; Mid-Piacenzian Warm Period; Pliocene Epoch; transient versus equilibrium climates.

Dates

Published: 2023-10-17 06:19

Last Updated: 2023-10-17 13:19

License

CC-By Attribution-NonCommercial-NoDerivatives 4.0 International

Additional Metadata

Conflict of interest statement:
None.

Data Availability (Reason not available):
Not applicable.