Peter deMenocal

Professor, Lamont-Doherty Earth Observatory, Columbia University, and Director, Center for Climate and Life

Expertise: Paleoclimate

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hypothesis   Hypothesis handle: deMenocal

ARTICLES REVIEWED

Analysis of “The Climate Snow Job”

in The Wall Street Journal, by Patrick Michaels

— 26 Jan 2016

"This article is indeed a snow job, as the title implies. The author has twisted the facts and distorted the science wildly. The author is well known for his wildly inaccurate clim..

CLAIMS REVIEWED

Natural variability can not explain modern global warming, as Heartland Institute report claims

CLAIM
"Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability."

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute, 2016

VERDICT

A lull in solar activity would have little effect on global temperatures; claims of “global cooling” are not based on science

CLAIM
"Forward projections of solar cyclicity imply the next few decades may be marked by global cooling rather than warming, despite continuing CO2 emissions."

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute, 2016

VERDICT

Heartland Institute report incorrectly claims no evidence of human impacts in melting ice

CLAIM
"Melting of Arctic sea ice and polar icecaps is not occurring at ‘unnatural’ rates and does not constitute evidence of a human impact on the climate."

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute, 2016

VERDICT

Global sea level rise is accelerating, despite Heartland Institute report’s claims otherwise

CLAIM
"Best available data show sea-level rise is not accelerating. Local and regional sea levels continue to exhibit typical natural variability—in some places rising and in others falling."

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute, 2017

VERDICT

The Sun cannot explain recent global warming, contrary to what Heartland Institute report claims

CLAIM
"Solar forcings are not too small to explain twentieth century warming. In fact, their effect could be equal to or greater than the effect of CO2 in the atmosphere."

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute, 2016

VERDICT