Washington is surrendering to 2.5 degrees of warming while calling the science a failure. The latest climate scenario report landed this week. The planet is still warming at more than 0.2 degrees per decade. The emissions cuts baked into current policies are still leading us past 2.5 degrees. Bill Hare of Climate Analytics put it plainly: “This is just physics. We’re losing the ability to limit warming even by two degrees without strong action and people need to be aware that it’s a political failure. It is just because politicians in many places are not acting fast enough.”
The report narrowed the extremes. The worst-case that wasn’t going to happen anyway got less bad. The central-case kept getting worse. The 1.5-degree target — the one 196 nations signed on to in Paris — is gone. The planet had already burned through 1.3 degrees before this revision landed. We have 0.2 degrees left. The gap doesn’t care.
Washington reacted to this report the way Washington has reacted to every climate report since James Hansen testified to the Senate in 1988. The politicians picked it up like a cudgel and swung it at each other’s teeth. One side called it vindication of their all-of-the-above approach. The other side tweeted “GOOD RIDDANCE!” as if the science were some opponent they’d just routed. Both sides were busy celebrating a political victory while the physics ignored both of them.
We who keep the notebook spot the dodge because we’ve been tracking the physics every morning for twelve years. The journal doesn’t run on models. It runs on the date the deer shift their bedding in the timber. The date Petenwell Lake loses its ice. The date the first mosquito of the year buzzes the shop door. Modeling can be politically inconvenient. What waits until a political resolution is the spring.
The models the politicians are fighting about aren’t even the models I use. A projection is a what-if. A twelve-year count of earlier-and-earlier ground-freezes is just a count. The whole political debate was misreading what the models said: the hotter-means-worse upper bounds were mislabeled as predictions when they were only there to mark what could happen if we did nothing. The new report doesn’t abandon the old results. It narrows the plausible roads. The central road is 2.5 degrees by century’s end.
That number is our actual, current-policy plan.
She burned through neighborhoods for miles. The fire doesn’t know whose land it’s on. It’s just physics, burning what it finds.
The report flags the feedback loops that put the hidden toll beyond what we can see precisely. The ocean kicks back less heat so the budget gets smaller. The thawing ground starts releasing methane so the carbon we haven’t emitted starts doing damage we can’t cap. The thinning ice reflects less sunlight so the planet absorbs more of what came in anyway. You can’t write a county ordinance against what the water knows is true.
Aldo Leopold wrote in A Sand County Almanac that he had watched his marsh go silent over the years he lived there. The silence was the data once the cranes had stopped. The silence on Petenwell Lake is at least two weeks later than it was when my father fished it — the ice-out moving toward January, the mute physics of a gas lease that has no best-before date.
The report itself pointed the reader to its own most important finding: “the scenarios are just permutations of policy.” They add or subtract the human variable and run the simulation again. The politician variable controls everything. When we built real policy — when we took the government on the road and ran the wire to the farms — the structural constraint wasn’t the technology. It was political will long enough to span a bond. The 1936 Rural Electrification Act ran co-op wire through this county because the co-op stayed accountable to its members. The next wire has to be the transmission for the renewable grid. The next capital loan has to be long enough to weather the business cycle and the next four election cycles. The physical penalty gets worse every year we argue about what color to paint the fall.
The physics didn’t produce this mess. The politicians did. The people currently celebrating “the science was wrong” are trying to turn their voters’ attention away from what the scientists actually wrote. The report says the same thing science has said since Svante Arrhenius did the math by hand in the 1890s. More carbon means higher temperatures. Policy just decides how high. We set a mark of 1.5 degrees because that was the threshold below which we could manage the temperature-climb without cooking-in the feedback loops. The scientists are telling us we’re losing the line. We’re on track for the higher number that strands the coastal cities. The trajectory hasn’t changed. Only our politicians’ willingness to admit it has.
The county would fix this if we ran it. When the road crew gets a bridge report that the loss-of-strength margin is closing on the County Z span, nobody argues about what the models mean. Nobody tweets a partisan hashtag. The county repairs the bridge or closes it. The feedback is so local it wakes the county supervisor at home. Next cycle’s bond measure isn’t about which party the engineers belong to. The climate reaction never waited for a scenario to hold a press conference. The first mosquito of the year landed on my left forearm three weeks ago last spring and it hadn’t landed at all in my father’s record. The partisan debate can yell as long as the shouting makes good fundraising but the deer in my woods moved north two weeks later than my uncle’s journals show them moving fifty years ago — and they are still moving north while Washington high-fives itself for owning the scientists.
A carbon budget is a road that is running out of surface. A carbon lease that lasts a century doesn’t expire because a senator tweets a good one. This revision isn’t an admission that the lid isn’t as hot as some scientists feared. It’s a warning with a deadline attached: still getting hotter, still need to stop. The politicians pretending the report vindicates their side mean you stop at the same temperature-limit no matter which party is currently pretending the limit doesn’t apply to them. The deer keep going. The lake keeps thawing. The budget keeps shrinking. The world is leaving us less to argue about while we argue about the report that says so.