U.S. California wildfires produce huge amount of CO2e emissions: study

LOS ANGELES, Oct. 18 (Xinhua) -- California's wildfire carbon dioxide equivalent (CO2e) emissions in 2020 were approximately two times higher than California's total greenhouse gas (GHG) emission reductions since 2003 to 2019, a latest study showed.

The study, titled "Up in smoke: California's greenhouse gas reductions could be wiped out by 2020 wildfires," was published in this month's edition of the journal Environmental Pollution.

The historic megafires of 2020 released an estimated 127 million metric tons of carbon dioxide into the air. That compares to the 65 million metric tons of greenhouse gas emissions California was able to reduce between 2003 and 2019, according to the study.

California experienced its most disastrous wildfire year on record in 2020. CalFire, the state agency responsible for leading California's wildfire prevention and suppression, reported that over 17,000 square kilometers got burned in 2020.

The 2020 fires were followed by another extreme fire season with about 10,000 square kilometers burned in 2021.

The study noted that without considering future vegetation regrowth, CO2e emissions from the 2020 wildfires could be the second most important source in the Golden State above either industry or electrical power generation.

The study also warned a positive feedback loop between climate change and wildfire that's very negative.

Michael Jerrett, lead author of the study and a professor in the Department of Environmental Health Sciences at the University of California, Los Angeles, was quoted by the USA Today on Tuesday as saying that climate change is creating conditions conducive to larger wildfires while the wildfires are adding to the greenhouse gases that cause climate change.

"Our analysis suggests that significant societal benefits could accrue from larger investments in improved forest management and stricter controls on new development in fire-prone areas at the wildland-urban interface," the study said.