This might help put the conversation around carbon capture in perspective.

In their new study of direct air capture, the IEA proposes a "large and accelerated" scale-up from today's ~0.01 Mt-CO2 / yr rate of capture to ~980 MT-CO2 / yr in 2050.

iea.org/reports/direct…
To put this in perspective, the current rate (~0.01 Mt-CO2/yr) of DAC is about 0.000017% of our current greenhouse gas emissions.

Or, put another way, it absorbs about 5-6 *seconds* of the greenhouse gas emissions we put out every year.
And if we manage to scale this up to the ambitious figure of 980 Mt-CO2/yr by the year 2050 -- which is not at all guaranteed -- it would remove about 1.6% of our current greenhouse gas emissions.

Or, only about 6 *days* of our current annual emissions.
Even if this were to happen, it would be within the error bars of our being able to even measure it in the atmosphere.
There are other ways to remove carbon from the atmosphere, of course. Nature-based solutions (in trees, soils, and oceans) can be used too, but they have other limitations.

Bottom line: don't expect a huge amount of DAC happening anytime soon.

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Dr. Jonathan Foley

Dr. Jonathan Foley Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @GlobalEcoGuy

Apr 13
There are fundamental physical, chemical, and geologic constraints to carbon removal technologies.

While we can still find areas of efficiency gain, the fundamental laws of thermodynamics make it very, very challenging to remove a gas *after* it’s burned. rechargenews.com/energy-transit…
I think we need to do more rigorous analysis of what the fundamental, inviolable physical, chemical, biological, and geologic limits of carbon removal are.

What are the limits to DAC? CCS? Nature-based solutions?

I’m not sure we really know.
Sadly, theoretical economic models and integrated assessment models (which are driving a lot of this conversation) and wishful thinking do not trump is physical laws.
Read 7 tweets
Apr 6
It's good to see the latest IPCC report, focusing on climate solutions.

Here's the basic problem. We need to dramatically cut emissions across these different sectors and activities.
At Project Drawdown, we evaluated many different climate solutions -- for their potential size and cost.

Here are the top solutions to get to 1.5˚C
And the next batch of solutions.
Read 7 tweets
Jan 24
So frustrating. Was visiting my daughter & grandson yesterday, and noticed how their apartment (in brand-new building) was cold & drafty, mainly because the builder failed to install weatherstripping in the windows.

Her heating bill last month was 3x higher than it should be.
This building has over 180 units, and I bet all of them leak like crazy. And each tenant is paying way too much for heating, not to mention the awful effects on emissions and climate.
This is a brand new building, with a good management team. And they seemed surprised, saying no one ever mentioned this to them before.
Read 6 tweets
Aug 19, 2021
The craziest thing about climate change is somehow we expect Congress, the White House, and the UN COP process to save the day.

That is *never* going to happen, no matter who’s in charge.

They don’t lead, and they never did. At best, they follow.

When are we going to learn?
The political class has failed us, and is only interested in their own power.

The real leadership on climate change comes from all of us — activists, scientists, writers, business leaders, community leaders, technologists, entrepreneurs, artists, and beyond.
If we leave the fate of the planet up to the US Congress and the United Nations — with corrupt leaders and systems like COP that were designed to fail from day one — then god help us.
Read 4 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us on Twitter!

:(