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Posts by Kelly Hereid

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Welp, my day is ruined.

@NWS probabilistic heat risk just got released today.

Soliciting for Public Comments through September 30, 2026

www.wpc.ncep.noaa.gov/heatrisk/pro...

3 hours ago 7 6 1 0

Lots of interesting nuggets in the country-level sections of the report too.

My favorite:
"California increased its [battery] capacity to 17 GW by October 2025, two and a half times its level at the end of 2022. Texas surpassed 15 GW by September 2025, more than 11 times its 2022 level."

32 minutes ago 1 0 0 0

Gas being treated as dunkelflaute insurance for grid. Maybe better/cheaper to do actual insurance?

More interesting opportunities for insurance to be useful in the mid transition.

4 hours ago 4 0 0 0
A screenshot showing the title page of the study:

ENDBERICHTERFORDERLICHKEIT UNDGEEIGNETHEIT VONKAPAZITÄTSMECHANISMENÖKONOMISCHE ANALYSE UNDVERGLEICH MIT EINERZUKUNFTSFÄHIGENABSICHERUNGSPFLICHT Studie im Auftrag von BNE Bundesverband neue Energiewirtschaft e. V., DIHK Deutsche Industrie- undHandelskammer, EEX European Energy Exchange AG,VEA Bundesverband der Energie-Abnehmer e. V.

A screenshot showing the title page of the study: ENDBERICHTERFORDERLICHKEIT UNDGEEIGNETHEIT VONKAPAZITÄTSMECHANISMENÖKONOMISCHE ANALYSE UNDVERGLEICH MIT EINERZUKUNFTSFÄHIGENABSICHERUNGSPFLICHT Studie im Auftrag von BNE Bundesverband neue Energiewirtschaft e. V., DIHK Deutsche Industrie- undHandelskammer, EEX European Energy Exchange AG,VEA Bundesverband der Energie-Abnehmer e. V.

Bombshell study that questions a key German electricity market policy.

tldr: DON'T SUBSIDISE NEW GAS PLANTS WITH PUBLIC MONEY!

Most interestingly: it was not (only) commissioned by the renewable industry but (i.a.) by one of DE's main business lobby groups (@dihk.bsky.social)!

A đŸ§”analysing it:

4 hours ago 8 4 1 1
Pepe Silvia meme superimposed on a schematic illustrating causal pathways from climate change to economic damages. Probably in poor taste.

Pepe Silvia meme superimposed on a schematic illustrating causal pathways from climate change to economic damages. Probably in poor taste.

Update to our paper on climate damages! New title, new figure

www.nber.org/system/files...

7 hours ago 21 4 2 0
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In 2025, renewables overtook coal in global electricity generation for the first time in over 100 years.

Renewables: 33.8%
Coal: 33.0%

Coal fell below a third of global electricity generation for the first time in history.

10 hours ago 248 91 4 16
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Human-induced climate change intensifies spatially compounding fire weather extremes across European countries - npj Natural Hazards npj Natural Hazards - Human-induced climate change intensifies spatially compounding fire weather extremes across European countries

đŸ“„đŸ”„ New study on Spatially compounding fire danger in Europe, led by E. Gauthier.

We often view extreme fire weather locally—but what if multiple European countries face it simultaneously, potentially overwhelming shared firefighting resources via widespread fires?

www.nature.com/articles/s44...

1 day ago 18 10 1 1
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Decades of increased emissions from forest-fuelled BECCS - Nature Sustainability Governments are considering subsidies for bioenergy with carbon capture and storage fuelled by wood from existing forests. However, a transparent model estimates that this will probably increase emiss...

Many govts hope capturing carbon from power plants burning wood will cause "negative emissions." New Nature Sust. paper today finds this likely increases emissions for decades, generates no negative emissions within 150 years, and increase electricity costs ~3.5-fold.
www.nature.com/articles/s41...

1 day ago 137 70 4 13
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Story from 2017 but largely unchanged - BECCS (and indeed most "negative emissions") are largely a model fudge factor to hit emissions targets that are increasingly in the rear view mirror.

Cheap and easy to put CO2 in the atmosphere, hard and expensive to pull it out.

1 day ago 18 9 1 2

This is fantastic - feel like people look at me like I have 3 heads when I say negative emissions are mostly a fudge factor, so happy to have a decent reference finally!!

1 day ago 7 0 0 0
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Tragedy of the horizon on steroids: the green transition and credit ratings How do financial markets influence the green transition? Advocates of harnessing markets to foster the green transition claimed that market rationality is a reliable mechanism to channel investment...

Publication alert! 🔔

My new article in @ripejournal.bsky.social shows that the way in which credit ratings assess climate risks is detrimental to chances of the green transition.

www.tandfonline.com/eprint/DEWKJ...

1/n đŸ§”

5 days ago 38 19 1 4

There's a reason my husband isn't even allowed to send me Zillow listings above 13 😅

2 days ago 3 0 1 0

Thank you!

Bit of mixing up cause and effect here - people only charge at home bc it's the only place where charging experience doesn't suck.

Hoping this improves enough before it's time to replace our car. Determined to switch to EV when it's time but dreading the logistics as a renter.

2 days ago 4 0 1 0

The Dynamite Disaster is one of the most nutso parts of the 1906 Quake. This article from the centennial describes it quite well.
www.sfgate.com/news/article...

2 days ago 42 15 5 0
A black and white photo of a row Victorian houses tilted at odd angles presumably due to liquefaction, labeled “Peculiar Effects of Earthquake”

A black and white photo of a row Victorian houses tilted at odd angles presumably due to liquefaction, labeled “Peculiar Effects of Earthquake”

A ghostly black and white photo of people and a cart walking down a street where the buildings are all damaged and some just have the facades standing, labeled “California Street”

A ghostly black and white photo of people and a cart walking down a street where the buildings are all damaged and some just have the facades standing, labeled “California Street”

A black and white photograph of the burned-out shell of San Francisco city hall with the dome still mostly intact, labeled “City Hall”

A black and white photograph of the burned-out shell of San Francisco city hall with the dome still mostly intact, labeled “City Hall”

A black and white photo of people and makeshift shelters in the earthquake and fire-damaged city, labeled “Refugee Camp”

A black and white photo of people and makeshift shelters in the earthquake and fire-damaged city, labeled “Refugee Camp”

It’s April 18th, so time to repost some of my great-grandfather’s photos of San Francisco after the 1906 earthquake

2 days ago 116 45 3 4
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More than 40% of ships globally transport fossil fuels. Nearly all of them run on fossil fuels too.

2 days ago 439 187 16 15

nooooo how dare you sir

2 days ago 1 0 0 0

Summer research experience is a critical pathway to train the next generation of scientists. I participated in a relative of the REU program (Keck geo consortium) which was super important training to make me competitive and prepared for grad school.

Eating the seed corn.

2 days ago 18 5 0 0
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Nationwide blackouts reduced economic activity by 35 percent, with roughly half of the loss recovered on subsequent days through intertemporal substitution, from Luis E. Gonzales, Koichiro Ito, and Mar Reguant www.nber.org/papers/w35066

3 days ago 8 2 0 0
Colorado Water Year 2026 temperature and precipitation compared to 1991-2020 average. Temperature bars show departure from average, maps below it show temperature ranks across the state with statewide ranking. Precipitation bars are accumulated departure from average, with daily precipitation as black bars. Maps below that show precipitation ranks across the state with statewide ranking.

Colorado Water Year 2026 temperature and precipitation compared to 1991-2020 average. Temperature bars show departure from average, maps below it show temperature ranks across the state with statewide ranking. Precipitation bars are accumulated departure from average, with daily precipitation as black bars. Maps below that show precipitation ranks across the state with statewide ranking.

This is my new favorite graphic produced by @climate.colostate.edu and @rschumacher.cloud. It's also been quite fascinating to watch the accumulation of above average temperatures for the water year. Find it here: climate.colostate.edu/co_cag/

3 days ago 46 15 2 4
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Japan’s Cherry Blossom Database, 1,200 Years Old, Has a New Keeper

Japan’s Cherry Blossom Database, 1,200 Years Old, Has a New Keeper www.nytimes.com/2026/04/17/c...

3 days ago 21 3 0 1

@costasamaras.com going to have to update your "N Hoover Dams worth of energy" metric

3 days ago 6 0 1 0
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Newsroom | Bureau of Reclamation Bureau of Reclamation

NEW: Bureau of Reclamation announces it is diverting water from Flaming Gorge Reservoir to Lake Powell and reducing Powell's releases in response to a "historic drought"

"... potential for up to an additional 40% reduction to Hoover Dam’s hydropower generating capacity as early as this fall."

4 days ago 50 25 2 3
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Aw Dacie Moses ♄♄♄
Looking pretty spiffed up after the reno!

4 days ago 1 0 0 0
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Other Colleges Have Frat Houses. This One Has a Cookie House.

There were many things to love about @carleton.edu, but the house where you could always go bake/eat cookies one of them. They also had a lovely brunch.
www.nytimes.com/2026/04/17/d...

4 days ago 7 2 2 0

The Chesapeake as defined by ship traffic.

4 days ago 8 2 0 0
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CAISO smashed its wind record last night by almost 500 MW, as California wind CAISO smashed its wind record last night by almost 500 MW, as California wind totaled 7,193 MW. This is a huge jump in wind from the prior record set on April 9th, but even more so, as up until recent...

First power from the nation's largest wind project is showing up in CAISO's dispatch: www.gridstatus.io/insights/414...

4 days ago 24 2 1 5
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A nice reminder from Ember, using British data. Wind and solar are complementary. Our system works best when you have both, each calling on their own strengths in terms of generation patterns.

If either struggles to grow like it should, we end up with a more expensive, slower fossil phase-out

4 days ago 194 76 4 4

To clarify this was from during her stint at CEA

4 days ago 0 0 0 0
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Senior Editor, CNN Weather Features in Atlanta, Georgia, United States of America | Creative, Content & Editorial at CNN Apply for Senior Editor, CNN Weather Features job with CNN

JournoJob alert: Come work with me at CNN Climate & Weather. Must have multimedia skills & be a sharp editor to shepherd and edit weather edutainment stories. This is a great role for the right person. careers.wbd.com/global/en/jo... (You can also be based in DC, NYC etc).

5 days ago 22 11 0 0