Skip to main content

Activity for ghgpolicy.org

Active on:

Loading activity...

internet friends, I seem to remember some recent research or reporting finding that plug-in hyrbid cars don't end up driving much in electric mode — but can't recall what I read anyone have any pointers?

Bluesky network5d ago

This is a really nice piece of writing about building an ocean climate model. Congrats!

@al.merose.com avatarAl Merose@al.merose.com

Here's the tale of how @jder.bsky.social and I scaled Samudra, a neural ocean emulator capable of predicting 8 years of the ocean on a single GPU, to operate at a full 1/4° resolution (16x the size in bytes). It was quite a humbling process.

Bluesky network19d ago

What happens when the forest behind a carbon offset project burns down? Most carbon crediting programs have an insurance program; few use real numbers, so most aren't prepared for actual forest risks. The Paris Agreement Crediting Mechanism might change that with a proposed empirical approach.

An Empirical Approach to Quantifying Forest Carbon Risks
Bluesky network1mo ago

A quick and time-sensitive question for the internet hive mind: What's the best reference for the embodied emissions in solar photovoltaics manufacturing (e.g., gCO2e/kWh)? (I'm looking for numbers, not a debate. I know the emissions are small relative to the value of displacing fossil fuels.)

Bluesky network1mo ago

I have resigned from the Greenhouse Gas Protocol's Independent Standards Board. The Protocol is openly violating its own rules and has effectively delegated forest carbon accounting standards to a secret, industry-led working group. ghgpolicy.org/s/2026-06-08...

Text too long; see machine-readable PDF at this link: 

https://ghgpolicy.org/s/2026-06-08-Cullenward-resignation.pdf
Bluesky network2mo ago

welcome to the resistance, @kylemeng.com (and thank you for the good work)

Today, the California Air Resources Board officially passed cap-and-invest (C&I) regulation with a new program that essentially subsidizes polluters to individually bust California’s emissions lim...
@canarymedia.com avatarCanary Media Inc.@canarymedia.com

The California Air Resources Board is making some unpopular updates to the state’s cap-and-invest program. https://www.canarymedia.com/articles/emissions-reduction/california-controversial-cap-and-invest-program

Bluesky network2mo ago

If you live in California and haven't decided how to vote, please indulge me as I share why I voted for Tom Steyer. I'll share some more pragmatic thoughts below, but to be honest the the thing I keep coming back to is that he was endorsed by the best candidate in the race, Betty Yee.

Bluesky network2mo ago

Some personal news — I’m excited to continue my work with the @kleinmanenergy.bsky.social, now as a Schleifer Senior Fellow. I have never had better or more supportive colleagues, and am so grateful to have a home base for public interest policy research.

Two Shleifer Senior Fellows Named
Bluesky network2mo ago

I love you Dave, but don’t make excuses for liars and cowards. CARB could have kept the prices low without giving away all the money. The refiners will be make the same demands again tomorrow, safe in the knowledge that the more goes unsaid the more they can ask for.

@dave.bzky.team avatarDavid Weiskopf believes in you@dave.bzky.team

I suspect the real rationale here is "we are very scared of having any refiner go out of business, and therefore we will do literally anything to avoid that outcome, and we are sorry, but they have got us by the balls here," and that regulators simply cannot say that from the dais.

Bluesky network2mo ago

I think at this point you have to treat statements from CARB staff like you do statements from US DOJ prosecutors. They will say anything. They might even believe it.

@toddwoody.bsky.social avatarTodd Woody@toddwoody.bsky.social

Breaking: California becomes the latest blue state to retreat on climate goals amid affordability concerns as regulators Friday evening voted to revamp its landmark carbon market to ease costs to the oil industry with $4 billion in incentives. Free link. www.bloomberg.com/news/article...

Bluesky network2mo ago

I'll say this about Governor Newsom and CARB Chair Lauren Sanchez: At least Governor Hochul had to decency to say she wanted to roll back New York's climate laws in public. Here in California we do the same in private and call it climate leadership.

@bryanculbertson.com avatarBryan Culbertson 🥄@bryanculbertson.com

CARB is proposing a massive handout to oil & gas industry via Cap-and-Invest 😡 And they are raiding transit and housing funding to do it 1. Transferring allocation from GGRF to Industry 2. Adding new category of MDI industry credits $1.1B yearly subsidy to Industry at loss of $900M to GGRF

Bluesky network2mo ago

I’m all in favor of scientists making grounded criticisms of one another’s work, but everyone involved in this debate needs to ask themselves: am I sharing my views in a way that undermines external confidence in my field, and is that necessary to make my technical point?

@madisoncondon.bsky.social avatarMadison Condon@madisoncondon.bsky.social

the political project is to invalidate all existing climate science papers from being used in regulation, litigation, design, etc. and a lot of you are not making this easy

Bluesky network3mo ago

I'm going to collect a few reactions to this thread for comment, as it's an instructive moment in the politics of climate science (however niche). 🧵

@revkin.bsky.social avatarAndy Revkin 🌎 ✍🏼 🪕 ☮️ revkin.substack.com@revkin.bsky.social

No matter what do you think of his craziness, did you ever think you’d see any president post about a CO2 emissions scenario?

Bluesky network3mo ago