“To reduce CO2 concentration in the atmosphere in the long run, restrictions imposed during the corona pandemic would have to be continued for decades. But even this would be far from being sufficient.”
A study by researchers at the Karlsruhe Institute for Technology (KIT) in Germany showed that because of the lockdowns imposed by COVID-19, CO2 emissions worldwide were estimated to be 8% lower in 2020, but measurements so far have revealed no CO2 decrease in the atmosphere.
In addition, the study said that reaching the Paris Accord goal of limiting global warming to 1.5 degrees Celsius would require similar COVID-like lockdowns every year.
The study, entitled Can We Measure a COVID-19-Related Slowdown in Atmospheric CO2 Growth? Sensitivity of Total Carbon Column Observations, was published in the scientific journal Remote Sensing and produced by Dr. Ralf Sussmann, PD, with the Atmospheric Environmental Research Division of KIT’s Institute of Meteorology and Climate Research, and KIT researcher Markus Rettinger.
In a statement, KIT said, “The corona pandemic has changed both our working and our private lives. People increasingly work from home, have video conferences instead of business trips, and spend their holidays in their home country. The lower traffic volume also reduces CO2 emissions. Reductions of up to eight percent are estimated for 2020.”
According to the Intergovernmental Panel on Climate Change (IPCC),
cumulative reductions of about this magnitude would be required every year to reach the goals of the Paris Agreement by 2030,” stated KIT. “Recent measurements by researchers of KIT revealed that concentration of carbon dioxide (CO2) in the atmosphere has not yet changed due to the estimated emission reductions.”
“In spite of the reduced emissions, our measurements show that CO2 concentration in the atmosphere has not yet decreased,” said Dr. Sussmann in a press release.
To reduce CO2 concentration in the atmosphere in the long run, restrictions imposed during the corona pandemic would have to be continued for decades. But even this would be far from being sufficient.”
The restrictions imposed during the corona crisis, however, are far from being sufficient. They have just resulted in a one-time reduction by eight percent. To reach zero emissions in the coming decades, cumulative reductions of the same magnitude would be required every year, i.e. 16 percent in 2021, 24 percent in 2022, and so on.”
“For this, political measures have to be taken to directly initiate fundamental technological changes in the energy and transport sectors,” said Sussmann.