Tag Archives: climatechange

Much warmer summers

The map above, based on a new analysis from the Climate Impact Lab, shows how 95-degree days (35 degrees Celsius) are expected to multiply this century if countries take moderate climate action. In this scenario, countries would take some measures, but not drastic ones, to curb emissions — roughly the trajectory of the current pledges under the Paris climate agreement.

The resulting global warming would still cause significant shifts for many cities. In Washington, from 1986 to 2005, an average of seven days each year had temperatures of at least 95 degrees. By the end of the century, the city can expect 29 of these extremely hot days per year, on average. (The likely range is 14 to 46 hot days per year.)

Source: 95-Degree Days: How Extreme Heat Could Spread Across the World - The New York Times

Good analysis on what the impacts of the hotter days coming are going to be. 95 F is as reasonable an arbitrary measuring point as anything else, we're approaching body temperature there. The article looks at the world under the Paris agreement, as well as without it. The differences are striking.

Interestingly, commercial crop yields (specifically corn and soybeans) start to drop after 84 F. I hadn't realized that, but it makes sense. That's how hotter days, even without drought, have negative impacts on our food supply.

The Grand Conspiracy

Last night, among a generally jovial conversation around new finds in astronomy, I also was subjected to various out bursts of "electrical theory of mars" (i.e. Mars was carved by machines) and similar Grand Conspiracy ideas about how NASA had hid all this from us. It all came from one new club member, who's previous outbursts had been minor enough I hadn't yet realized he was a full time crank. The reaction from the table was mostly ignore and move on.

But it still amazes me that someone thinks it's far more plausible that tens of thousands of individuals are manipulating scientific information about Mars in a coordinated and consistent way. That they can manage to induct all new science students working on the data into their masonic clan. I guess it makes a good Dan Brown novel, but it maps really badly to reality.

And if the grand conspiracy was just at the kooky fringe, it would be something I could mostly chuckle at and move on. But grand conspiracies have become mainstream fodder. For instance, cable news generating a meme in conservative America that Climate Change is a hoax created by 10s of thousands of scientists to keep their jobs. Really? The next Dan Brown novel is going to be about grad students living 4 to an apartment, eating raman noodles, feeling so clever in their grand conspiracy?

I guess if you're primarily motivated by dollars, have a poor understanding of science in general, and never worked with science researchers before, it might make sense. First, project your basest motivations on others. Then sprinkle gracious ignorance about how science or economics work. Make sure to pass over the fact that if you had the mathematical chops to work out something as complicated as a climate model, and money was your motivator, you'd easily make 10 times as much being a Quant for the financial sector. They heavily recruit out of the physical sciences, many of my classmates from college went that route. But no, the grand conspiracy would rather believe the route to riches is applying for competitive NSF grants instead of credit default swaps and derivative trading.

So why do people believe in the Grand Conspiracy? Because it's comforting. It takes a complex world and makes it simple. Complex problems and motivations are now turned into mythical dragons that some mythical protagonist can go slay, making all right in the world.

The only problem with that: it isn't real. The moon landing wasn't faked, it took a generation of our best minds to get us there, and huge technological advances came out of it. Vacines don't cause autism, they've eliminated a vast number of debilitating diseases that you no longer have to worry about if you live in the west, and are now starting to eliminate certain kinds of cancer. Climate change is not a hoax, it's a real, hard problem, that we're going to need to figure out how to address as a society. Evolution is demonstrated science, we don't need a designer to create complex emergent behavior.

The world of facts and knowledge is one of spectacular beauty, complexity, and wonder, and doesn't need Grand Conspiracies to make it majestic and exciting.