Shared Socioeconomic Pathways (SSPs) are climate change scenarios of projected socioeconomic global changes up to 2100 as defined in the IPCC Sixth Assessment Report on climate change in 2021. They are used to derive greenhouse gas emissions scenarios with different climate policies.
When it comes to climate change, we often find ourselves in a bit of a pickle. On one hand, we have scientists who are trying to get us to take action based on the most plausible scenarios, and on the other, we have some pretty alarming projections that seem almost too extreme to consider. Enter the SSP5-8.5 scenario—a model that sounds like a bad sci-fi movie title but actually represents a high greenhouse gas emissions pathway. Some experts are saying we should pay attention to it, even if it seems improbable. Why? Well, let’s dive in.
First off, let’s clarify what SSP5-8.5 is all about. It’s part of the Shared Socioeconomic Pathways (SSPs), which are used to project future climate scenarios based on different levels of social, economic, and environmental factors. SSP5-8.5 is essentially the “let’s burn fossil fuels like there’s no tomorrow” scenario, predicting a world where we continue to emit greenhouse gases at an alarming rate. It’s like the worst-case scenario that makes you want to hug your carbon-neutral friend and never let go.
Now, you might be thinking, “Why should we worry about something that seems so far-fetched?” Well, here’s the kicker: just because something isn’t likely doesn’t mean it’s impossible. Climate scientists have warned us that ignoring high-emission scenarios could be like ignoring the warning label on a bottle of bleach—sure, you might think you’re safe, but you’re really just one bad decision away from a disaster.
The analogy used by the climate scientist who brought this to light is pretty spot on: “Levees are built to withstand the hundred-year flood, not the average year.” In other words, we don’t build infrastructure based on what’s likely to happen; we prepare for what could happen, even if it’s a rare event. If we only plan for the average year, we might find ourselves knee-deep in water when the hundred-year flood finally catches up with us.
So, what does this mean for policy-making? It means we need to get our act together and start thinking about climate resilience and adaptation strategies that take into account these extreme scenarios. Sure, it might be easier to focus on the more likely outcomes, but that’s like deciding to wear shorts in winter just because it’s sunny today. You might be comfortable for now, but you’ll end up regretting it when the snow comes.
Incorporating SSP5-8.5 into our thinking isn’t about spreading doom and gloom; it’s about being realistic and preparing for the unexpected. It’s about recognizing that climate change is not just a future problem—it’s happening now, and we need to be ready for whatever curveballs it throws our way. Because let’s face it, climate change is the one thing that can make a surprise birthday party feel like a walk in the park.
In conclusion, while SSP5-8.5 may seem implausible, it serves as a crucial reminder that we can’t afford to ignore even the most extreme scenarios. As we navigate this complex issue, let’s keep our eyes on the prize: a sustainable future where we’re not just surviving but thriving—even when the weather decides to throw us a few curveballs. So, let’s roll up our sleeves and get to work, because the last thing we want is to be caught off guard, drenched and shivering, when the hundred-year flood finally arrives.
Inspired by: “Climate scientist warn we should not ignore SSP5-8.5 when making policy, despite it not being plaus…” (r/climatechange)