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While conducting search and rescue in the mountains of Puerto Rico following Hurricane Maria in September of 2017, a U.S. Customs and Border Protection (CBP) Air and Marine Operations Black Hawk located a home with HELP painted on its roof. (Photo: U.S. CBP/Wikimedia)

Earth's Carbon Concentrations Have Soared to Levels Not Seen in 800,000 Years

One NOAA oceanographer warns that even if humanity "stopped the greenhouse gases at their current concentrations today, the atmosphere would still continue to warm for next couple decades to maybe a century."

Jessica Corbett

As temperatures bust heat records across the globe and wildfires rage from California to the Arctic, a new report produced annually by more than 500 scientists worldwide found that last year, the carbon dioxide concentrations in the Earth's atmosphere reached the highest levels "in the modern atmospheric measurement record and in ice core records dating back as far as 800,000 years."

While the most significant jump was the global average for carbon dioxide (CO2)—which, at 405.0 parts per million (ppm), saw a 2.2 ppm increase from the previous yearconcentrations of other dominant planet-warming greenhouse gases, methane (CH4) and nitrous oxide (N2O), also hit "record highs," according to State of the Climate in 2017 (pdf) released Wednesday.

gg increases 2017

Considering those rates, Greg Johnson, an oceanographer at the National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory in Seattle, warned that even if humanity "stopped the greenhouse gases at their current concentrations today, the atmosphere would still continue to warm for next couple decades to maybe a century."

The 332-page report—which was overseen by NOAA and published as a special supplement to the Bulletin of the American Meteorological Society—also notes that 2017 is among the three hottest years ever, taking the top spot for warmest non-El Niño year since scientists began measuring in the 1800s. However, NOAA data released last weekend shows that 2018 is on track to set a new record.

The report details how "much-warmer-than-average conditions" across much of the world's lands and oceans has meant three years of "unprecedented" coral bleaching, Arctic air temperatures that are "warming at a pace that was twice the rate of the rest of the world," rapidly melting glaciers and ice sheets, and devastating tropical storms—such as Hurricanes Irma and Maria—that reflect "the very active state of the Atlantic basin."

In its regional analyses, the report notes that "the United States was impacted by 16 weather and climate events that each caused over $1 billion (U.S. dollars) in damages. Since records began in 1980, 2017 is tied with 2011 for the greatest number of billion-dollar disasters. Included in this total are the western U.S. wildfire season and Hurricanes Harvey, Maria, and Irma. Tornado activity in the United States in 2017 was above average for the first time since 2011, with 1,400 confirmed tornadoes."

US events

It also features a map that highlights notable climate anomalies and events across the globe during 2017. The graphic points out that both Argentina and Uruguay experienced their warmest years on record while Russia experienced its second wettest, and five of six observatories in Alaska documented record high permafrost temperatures.

Permafrost is a layer of soil, rock, or sediment that remains frozen and contains massive amounts of carbon dioxide and methane. Climate scientists are growing increasingly concerned that "as the global thermostat rises, permafrost, rather than storing carbon, could become a significant source of planet-heating emissions."

climate anomalies and events
climate anomalies and events 2

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Research Reveals How PR Firms Have Spent Decades Fueling Climate Misinformation

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Jessica Corbett ·


Progressives Decry US Gun Control Failures After 'Truly Sickening' Michigan School Shooting

"A 15-year-old shooter may have picked up the weapon, but Congress—through its inaction on gun violence—may as well have handed it to him."

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"It's time at long last to face reality and... close the detention facility at Guantánamo. Let's put this dark chapter behind us once and for all."

Brett Wilkins ·


With SCOTUS Set to Hear Abortion Case, Anti-Choice Groups Prepare to Enact 'Post-Roe Strategy'

Right-wing groups are lobbying lawmakers to pass state-level restrictions and ban sales of abortion pills, should Roe v. Wade be overturned.

Julia Conley ·

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