Pennsylvania is now poised to join a regional climate change agreement that is based on faulty assumptions about carbon dioxide, according to scientists and researchers who have testified before the state’s General Assembly over the past year.
“We are not in a CO2-driven climate crisis,” Rossiter said when he testified this past summer. “That is the scientific fact.” In fact, “there are benefits to Co2 emissions,” Rossiter explained, “since the molecule is a crucial plant and plankton food.”
Cap and Trade
RGGI makes use of a “cap and trade” system among participating states where electric utilities that emit more greenhouse gases than their assigned cap must purchase allowances at an auction to offset their excess emissions.‘Greening’ of the Earth
Kevin Dayaratna, a research fellow and principal statistician at the Heritage Foundation, a conservative think tank in Washington D.C., testified before the Pennsylvania House energy committee almost one year ago last October.Dayaratna told committee members that it would be a mistake for Pennsylvania to implement new environmental regulations based on climate models that did not account for the benefits of CO2. As part of his testimony, the Heritage researcher cited a recent study that described how CO2 emissions led to a “greening” of the Earth between 1982 and 2009.
“It is fundamentally important for any of these models to take into account the benefits of these CO2 emissions, as well as the costs,” Dayaratna explained during his testimony. But since some of the models only include costs while excluding the benefits “they are completely disingenuous,” he said.
Dayaratna also drove home the point that the models are based on assumptions that are open to manipulation.
“The sheer fact that these models can be manipulated to get pretty much any result you want illustrates the danger of using them in regulatory policy,” he said.
Dayaratna elaborated on some of the key points from his testimony in an interview while also challenging the assumptions underpinning Wolf’s regulatory proposal.
“There has indeed been global warming, but much of it is caused by natural influences and much of the global warming occurred in the pre-industrial age and cannot be attributed to human emissions,” he explained.
‘Scientific Consensus’
Wolf first announced he was taking “executive action” to combat climate change just a few weeks before the House hearing in October 2019.“Given the urgency of the climate crisis facing Pennsylvania and the entire planet, the commonwealth must continue to take concrete, economically sound and immediate steps to reduce emissions. Joining RGGI will give us that opportunity to better protect the health and safety of our citizens.”
But Dayaratna is not convinced there ever was a consensus on how much influence human activity has on the climate. He also does not view CO2 as a pollutant.
“Carbon dioxide is a naturally occurring, colorless, odorless nontoxic gas and I do not believe it is a pollutant in the same way that soot and smog are pollutants,” he said.
CO2 a ‘Minor Player’
David Legates, professor of climatology at the University of Delaware, was among the other witnesses who took issue with the notion of a “climate consensus” during the hearing.In September, the Trump administration appointed Legates as the deputy assistant secretary of commerce for observation and prediction at the National Oceanic and Atmospheric Administration.
While it’s evident that atmospheric CO2 has increased in response to human activity, the idea that CO2 is the primary driver of climate change has been overstated, Legates explained in his testimony.
“What underlies all attempts at climate stabilization is a belief that carbon dioxide is a magical control knob for the Earth’s climate, thus draconian measures are being suggested to achieve greenhouse gas reductions in a vain attempt to alleviate future disastrous weather events,” Legates said in his remarks to the House committee.
“As a climatologist who’s studied the Earth’s climate for nearly 40 years, I have learned that carbon dioxide does not dictate the climate. It is merely a minor player in climate change. Water vapor is the most important greenhouse gas and accounts for nearly 90 percent of the net warming of the planet due to the radiative impact of the Earth’s atmosphere.”
Legates also encouraged lawmakers to consider a larger historical view when addressing the implications of climate change. Human civilizations have “thrived under warmer conditions” but struggled under colder conditions, he noted.
“More vegetation and longer growing seasons are partly responsible, but, simply put, colder temperatures kill more people than warmer temperatures,” Legates said. “We have currently entered a warmer period in human history, but I do not believe humans are responsible for most of this warming as many other factors exist that cause climate to change.”