Dr. Zeke Hausfather

@hausfath

Climate scientist, IPCC / NCA5 author, temps, mitigation scenarios and energy systems. "Dangerous hopium peddler". . He/him.

San Francisco
carbonbrief.org
Joined July 2008
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  1. Pinned Tweet
    Aug 11

    There's grim news in the IPCC report, but also reasons for hope. We're flattening the curve of future emissions, and the darkest climate futures a decade ago are much less likely now. We can both celebrate progress and acknowledge how far we have to go: 1/

    47 replies 398 retweets 1,180 likes
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  2. Retweeted
    11 hours ago

    Today's update on SF/ numbers. Bottom line –huge increase in cases & test positivity. Hospitalizations still pretty benign (though early signs of an uptick). Most remarkable stat is our asymptomatic test positivity rate (ATPR) – now ~7%, or ~1-in-14.(1/16)

    43 replies 337 retweets 999 likes
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  3. Retweeted
    Dec 27

    As much as I love the recent rapid growth of renewables, the share of fossil fuels in the global energy system has barely budged in 50 years. We should be closing coal plants and extending the useful life of nuclear plants, and yet some nations are doing the exact opposite.

    73 replies 625 retweets 1,967 likes
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  4. Retweeted
    Dec 27

    Analysis: When might the world exceed 1.5C and 2C of global warming? | Read:

    6 replies 32 retweets 64 likes
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  5. Retweeted
    Dec 27

    Two centuries ago many believed that widespread poverty was inevitable. But this turned out to be wrong. One big lesson of the last 200 years is that economic growth is possible and poverty not inevitable. From my post on extreme poverty:

    20 replies 239 retweets 967 likes
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  6. Retweeted
    Dec 26

    Updated: Now the ratio is 20. The COVID death rate among unvaccinated people is 20-times higher than among vaccinated people. This is the latest age-standardized data from Swizerland. [From our post with on death rates by vaccination status: ]

    107 replies 1,053 retweets 2,349 likes
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  7. Retweeted
    Dec 24

    This is huge! India halting all new coal power plants even as electricity demand is projected to grow 3x would a game changer for climate. The US, on the other hand, with far more resources & far less dependent on coal can't even commit to phasing it out.

    34 replies 296 retweets 1,102 likes
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  8. Retweeted
    Dec 23

    Good words to end the year on by

    5 retweets 28 likes
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  9. Dec 23

    Say what? Now if ECMWF says the same I'll start to get excited 😉

    Let's look at the December 30th GFS snow forecast centered on the San Francisco Bay area. ❄️❄️❄️
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    2 replies 3 retweets 16 likes
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  10. Dec 23

    Woke up today and the power's out due to the storm. So there is a clear choice for the morning soundtrack:

    9 likes
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  11. Dec 23

    Or, as succinctly puts it,

    The cognitive dissonance is real. Or to put it more crudely & succinctly: We're no longer totally f$%@ed. But we're also far from totally unf$@%*ed!
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    2 replies 4 retweets 18 likes
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  12. Dec 23

    This is still a potentially dire future for many human and natural systems – and uncertainties in the climate response to our emissions are decidedly not our friend! – but its much easier to see a path forward to well-below 2C than it was a decade ago.

    3 replies 4 retweets 31 likes
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  13. Dec 23

    A decade ago the world appeared on track for a hellish 4C or 5C warming. Today climate policy and technology have flattened that down to around 2.7C (2C-3.6C).

    1 reply 11 retweets 32 likes
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  14. Dec 23

    Some cautious climate optimism to end the year from in . We are still far from meeting Paris goals, but the pace of replacing fossil fuels with clean energy has dramatically accelerated in recent years.

    8 replies 42 retweets 106 likes
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  15. Retweeted
    Dec 22

    Permafrost stores 2x the amount of carbon in the atmosphere yet is not considered by many climate models. Are we totally screwed??? Here I will explain what we know and why I promote but not panic. 1/

    Schematic of global carbon pools showing that permafrost stores 1600 Pg carbon, about twice as large as the atmospheric carbon pool
    16 replies 170 retweets 507 likes
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  16. Retweeted
    Dec 22

    As 2021 draws to a close, here is a taster of our work over the past year 🗓️ Highlights include: 📨 Launching two new newsletters ✊ A feature week on "climate justice" 🏴󠁧󠁢󠁳󠁣󠁴󠁿 COP26 in Glasgow 📝 The latest IPCC report THREAD

    1 reply 17 retweets 55 likes
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  17. Dec 22

    1 reply 7 likes
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  18. Retweeted
    Dec 22

    🧵Nice summary of what Ulf Riebesell () et al. are doing in mesocosms to look at impacts of ocean alkalinity enhancement (OAE). 100 GtCO₂/yr uptake potential is greatly exaggerated. While it is of paramount importance to study OAE, there's no guarantee it'll work. 1/n

    Here’s my dispatch from Canary Islands for where I reported on the world’s first field test of "ocean alkalinity enhancement" — a groundbreaking process that could turn the tide of climate change. Thanks to a grant from :
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    2 replies 15 retweets 40 likes
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  19. Dec 21

    Need a few more days of data to draw any firm conclusions, but interesting nonetheless. Could Omicron end up being a relatively quick (but quite sharp) wave?

    12 replies 3 retweets 61 likes
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  20. Dec 21

    Climate modeling of fantasy worlds is quite possibly the coolest climate scientist hobby of all time.

    Huge thanks to my amazing collaborators for helping me with this. And the great ideas and inspiration from at 4/4
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    6 replies 1 retweet 41 likes
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  21. Retweeted
    Dec 21

    We really nerded out this time by simulating the climate of . Read all about it in this spoiler-free article 1/4

    25 replies 166 retweets 881 likes
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