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 year—concentrations 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 released Wednesday.
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 (US 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 US 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.”
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.”
Angry, shocked, overwhelmed? Take action: Support independent media.
We’ve borne witness to a chaotic first few months in Trump’s presidency.
Over the last months, each executive order has delivered shock and bewilderment — a core part of a strategy to make the right-wing turn feel inevitable and overwhelming. But, as organizer Sandra Avalos implored us to remember in Truthout last November, “Together, we are more powerful than Trump.”
Indeed, the Trump administration is pushing through executive orders, but — as we’ve reported at Truthout — many are in legal limbo and face court challenges from unions and civil rights groups. Efforts to quash anti-racist teaching and DEI programs are stalled by education faculty, staff, and students refusing to comply. And communities across the country are coming together to raise the alarm on ICE raids, inform neighbors of their civil rights, and protect each other in moving shows of solidarity.
It will be a long fight ahead. And as nonprofit movement media, Truthout plans to be there documenting and uplifting resistance.
As we undertake this life-sustaining work, we appeal for your support. We have 24 hours left in our fundraiser: Please, if you find value in what we do, join our community of sustainers by making a monthly or one-time gift.