410 PPM & Rising — CO2 Levels Reach Dangerous Levels
Carbon Dioxide & You — A Cautionary Tale
High atop Mauna Loa on the island of Hawai’i, there is an observatory scientists use to study the cosmos. At 14,000 feet above sea level, it has a clearer view of the heavens than most places on Earth. (It is a neighbor of Kilauea, the volcano that erupted this week after a 6.9 magnitude earthquake struck the island.) The observatory is also an ideal place to monitor the Earth’s atmosphere in a place with no local pollution from large cities. One of the instruments installed there measures the concentration of carbon dioxide in the air.
For years, carbon dioxide levels have been monitored by the Scripps Institution of Oceanography, where Ralph Keeling is the director of the CO2 program. He plots the data, which has come to be known as the Keeling Curve, shown above. It shows that the concentration of carbon dioxide was above 410 parts per million for the entire month of April this year. The level has risen above 410 ppm before for a day or two, but never for an entire month — at least, not since people first began being collecting the data.
The sawtooth pattern indicates the levels vary over the course of a year due to seasonal variations and other factors, but the overall trend is clearly, unmistakably, and emphatically upward. On average, the concentration of carbon dioxide has been rising about 2.5 ppm per year, but the rate of change has accelerated since 2010.
“It’s another milestone in the upward increase in CO2 over time,” Keeling tells the Washington Post. “It puts us closer to some targets we don’t really want to get to, like getting over 450 or 500 ppm. That’s pretty much dangerous territory.”
How dangerous? CO2 levels were around 280 ppm in 1880, when the Industrial Revolution was getting started. Today, they are nearly 50% higher. “But wait!” the climate skeptics will cry. “CO2 levels have been higher in the past and the world is still here.” That’s true. During the mid-Pliocene warm period about 3 million years ago, carbon dioxide levels were 400 parts per million or above. But here’s the kicker. Ocean levels back then were more than 60 feet higher then than they are today. Think about that for a moment.
People like Rex Tillerson, former CEO of ExxonMobil, pooh pooh the data, claiming people will simply adapt to changes in the environment. Well, no, Rexie, they won’t. Biological adaptation occurs over long periods of time. The pace of change today means humans would have to adapt to living in a world that is significantly hotter within a generation or two. Call it a century at most. Which means, Rex, your great grandchildren will likely bear the brunt of your stupidity. It is unlikely they will think kindly of you when that happens.
In the past few weeks, the highest April temperatures ever recorded were set in Pakistan — 50.2°C, or 122.4°F, according to Sky News.