CO₂ Keeps Climbing – Faster Than We Think

CO₂ Keeps Climbing – Faster Than We Think

A few weeks ago, the atmospheric CO₂ reading at Mauna Loa Observatory quietly passed 430 parts per million (ppm).

Now?

We’re already at 432.5 ppm.

What Does That Actually Mean?

This isn’t just a number ticking up on a scientist’s screen.
It’s part of the famous Keeling Curve – one of the clearest pieces of evidence we have that human activity is changing the atmosphere.

  • Pre-industrial CO₂: ~280 ppm
  • 2000: ~370 ppm
  • 2015: ~400 ppm
  • 2026: 432.5 ppm… and rising fast

That’s not a gentle slope anymore — it’s starting to look like a ramp.

Why This Matters

CO₂ is a greenhouse gas. More CO₂ = more heat trapped.

We’re already seeing the effects:

  • Hotter summers (and not just “nice BBQ weather”)
  • Warmer oceans absorbing excess heat
  • More extreme weather events
  • Shifts in ecosystems (including those freshwater fish collapses we talked about recently)

The worrying bit?
The rate of increase is accelerating.

“It’s Only a Few Parts Per Million…”

That sounds tiny, doesn’t it?

But think of it like this:

If your body temperature goes up by just 2–3°C, you’re in serious trouble.

The atmosphere works the same way — small changes, massive consequences.

s There Any Good News?

Oddly… yes.

This relentless rise is:

  • Forcing governments to rethink energy faster
  • Accelerating renewables (solar, wind, battery storage — something I see working well at home)
  • Driving innovation in carbon capture and efficiency

But—and it’s a big but—
we are still adding more CO₂ each year than we remove.

A Slightly Uncomfortable Thought…

We measure CO₂ with incredible precision at Mauna Loa.

We track it daily.

We publish the graphs.

We share the data.

And then…
we carry on as normal.

Final Thought

432.5 ppm isn’t just a number.

It’s a milestone we didn’t want to reach —
and one we passed faster than expected.

The real question is no longer:
👉 “Is CO₂ rising?”

But:
👉 “How fast can we slow it down?”

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