Discover and read the best of Twitter Threads about #methane

Most recents (24)

Le dispositif #ARENH a créé un avantage énorme aux #FournisseursAlternatifs et a entrainé pour @EDFofficiel déboires industriels et difficultés économiques qui ont fait exploser son #endettement

#Énergie

linkedin.com/posts/lucile-v…
En 2021, 81 concurrents d’@EDFofficiel lui ont acheté 100TWh d’#électricité à un prix de 42€ le MWh.
Si ces fournisseurs vendent en moy. cette électricité à 142€ le MWh sur le marché #SPOT 👉🏼la perte pour EDF est de 10 Mds € (100€ x 100 millions MWh)

linkedin.com/posts/lucile-v…
Read 21 tweets
(1/8) A few thoughts on the current debate about the #EUTaxonomy on sustainable energy finance, especially the classification of #gaspower and #nuclear.
(2/8) #Nuclear power has a very peculiar risk profile. It certainly is climate-friendly, with small life-cycle CO2 emissions (like wind and PV). But its waste problem and nuclear accident risks are unique. Ultimately a value judgement whether or not these eco-risks are acceptable
(3/8) The true risk about #nuclear for climate change mitigation: Its track record of delays and cost overruns. New nuclear power makes for a very risky and costly bet for reaching climate targets. Just look at #Olkiluoto, #Flamanville, #HinkleyPoint. #FalsePromise?
Read 8 tweets
🚨Preprint Alert🚨IT'S HERE!

For the first time, we use a large-scale controlled study of O&G #methane emissions to answer a basic question: How effective are commonly used Leak Detection & Repair (LDAR) programs?

There's a LOT we learnt here. Thread: 1/ eartharxiv.org/repository/vie…
EPA has proposed regulations to reduce #methane emissions from O&G sector. If global energy sector methane were a country, it would be the third largest emitter behind only China & US.

Key part of these regs are leak detection & repair (LDAR) programs. 2/ washingtonpost.com/climate-enviro…
LDAR program are where O&G operators survey their facilities with IR cameras to find and fix leaks (see NYT article for videos).

But, we didn't really know if these LDAR programs are effective in reducing #methane, beyond anecdotal evidence. Until now! 3/ nytimes.com/interactive/20…
Read 15 tweets
CAT global update: Glasgow has a credibility gap between talk and action. If all govts met their 2030 targets, we would have 2.4˚C of warming in 2100. But right now, current policies put us at 2.7˚C. bit.ly/CAT_Global2021
A Thread 🧵
The 2030 #emissionsgap has only closed by 15-17% in the past year. Global GHG’s in 2030 will still be twice as high as what’s needed for 1.5˚C
#COP26Glasgow
/3
There’s still a massive 19-23 gigatonne gap betw 2030 targets & 1.5˚C compatibility in 2030. These are the countries impacting the gap. What’s stopping action? #natgas & #coal. Still too much coal in the pipeline, and gas is still a fossil fuel /4
Read 8 tweets
Savez-vous pourquoi le gaz fossile est appelé "gaz naturel" ?

Il est certes naturel au sens où il provient de l'environnement, comme le #pétrole et le #charbon, mais pourquoi l'avoir précisé dans son nom ?

[1/8]

Photo : plateforme pétro-gazière de Draugen en mer du Nord
Contrairement à une idée répandue, il ne s'agit pas d'une tentative de greenwashing.

L'explication remonte au XVIIIe siècle lorsque les villes s'équipaient de "gaz de ville" (aussi appelé "gaz manufacturé"), d'abord pour l'éclairage, puis plus tard pour le chauffage.

[2/8]
Le gaz de ville était un gaz de synthèse produit à partir de #charbon dans des usines à gaz (dont le nom est resté en français pour désigner quelque-chose de complexe).

[3/8]

Photo : ancienne usine à gaz de la Villette, BNF-Gallica
Read 9 tweets
Only a few days into @COP26, we’re already hearing global commitments and plans. This will all culminate in a day dedicated to the built environment next week. In the meantime, I’ll share my #COP26 thoughts in this thread.
I encourage you all to explore this wonderful virtual exhibition of the world's greenest buildings at @COP26. These projects serve as examples to all of us in the real estate and building sectors. @wef weforum.org/agenda/2021/11…
As I’ve said many times, @COP26 must be a turning point for the real estate industry. Buildings are responsible for 40% of carbon emissions worldwide. Action from this industry is crucial to meeting climate goals. businessinsider.com/sustainable-co…
Read 42 tweets
The #GlobalMethanePledge is being launched now at COP26. Result of a massive diplomatic effort by the #EU and the #US, the pledge has now joined over 80 signatories, covering over 2/3 of the global GDP and about 46% of the global #methane emissions. 1/8 unfccc-cop26.streamworld.de/webcast/high-l…
The signatories pledge to cut 30% of global CH4 emissions by 2030, targeting all major emitting sectors #agriculture, #waste, #energy. This is a major step forward & the first time CH4 made it to the top of Global Leaders' priorities list. Many more steps needed looking ahead 2/8
The pledge covers emissions that can be reduced via targeted measures - a lot, but not enough to keep CH4 emissions aligned with 1.5C goal. another 10-15% of reductions must take place via indirect measures incl. #energyefficiency and changes in energy consumption patterns 3/8
Read 8 tweets
Wide-ranging plan to reduce #methane emissions announced by the @WhiteHouse. whitehouse.gov/briefing-room/…
Reaction to proposed #methane rule from @APIenergy. Image
At #COP26, @POTUS says "it's approaching 100 countries that are signing on" to the pledge to reduce #methane. Image
Read 6 tweets
The Heat is On🔥🌍
A world of climate promises not yet delivered

Today we’ve publish the @UNEP #EmissionsGap report

Good news:
we are doing increasingly better closing in on 2°C
Bad news:
it is still far from meeting the goals of the #ParisAgreement

A short thread (1/n)
The @UNEP #emissionsgap report takes stock of current pledges of countries and compares them to where emissions emissions should be going to limit warming to 1.5°C or 2°C.

The difference is called the emissions gap.
(2/n)
The latest @UNEP #EmissionsGap Report finds new and updated Nationally Determined Contributions only take 7.5% off predicted 2030 emissions compared to previous commitments. Reductions of 30% are needed to stay on the least-cost pathway for 2°C and 55% for 1.5°C. (3/n)
Read 15 tweets
I'm out here in WY near the Wind River Range to measure #methane emissions. As I write this, EPA is working on releasing updated methane regulations.

Let me tell you why this is not necessarily bad news. A thread on the complexity of #methane accounting: 1/
First, why is #methane fee a great idea? Recent data show that #methane emissions from operators vary by many orders of magnitude. So it makes sense that under a fee, responsible operators will be rewarded and those with high emissions will be penalized.
So, what's the issue with BBB proposal? Fee is entirely based on self-reporting to EPA GHGRP. 2 problems:

1) Emissions are underestimated in EPA report
2) Only facilities >25000 CO2e required to report

This sets up potential for fraud as it's easy to reduce emissions on paper.
Read 9 tweets
THREAD
Editing the media: @grist
TRUE: "Cutting methane emissions is the fastest way to slow warming."
NOT TRUE: "three relatively cheap ways to tamp down on emissions."

Misleading terms used: seep/seepage/leak

grist.org/energy/cutting…
In 1995, I moved to a farm in Wise County where the “Father of #fracking” experimented with fracking.

I parked on the side of the road and I watched them, learned, documented, then researched.

My air turned brown and my water turned black.

earthisland.org/journal/index.…
For 20+ yrs, I directly observed #oilandgas operations. For 7+ years, I've made invisible #methane emissions visible with OGI technology.

I observed > formed questions > did research > formed a hypothesis > observed > collected data/evidence

Went public.
Got ridiculed.

leak
Read 9 tweets
Good read on #methane and @APIenergy ...ALMOST.

The fact that oil and gas is still paying API to obstruct regulations and lie to the public is more PROOF that we should not believe any of their climate promises.
1/2
blog.ucsusa.org/julie-mcnamara…
Here is where this article fails:

"staunching the flow of methane is achievable and affordable—commonly at the level of such basic things as swapping component parts, monitoring for leaks, and stopping venting and flaring."

Sound simple? The author is an analyst.
To quote EDF's lead scientist, “Things won’t work like they’re supposed to work on paper,” bloomberg.com/features/2021-…
Read 4 tweets
There’s a gaping (loop)hole in #climate reporting, calculations & countermeasures—#BlueCarbon!

Must finally put #Seabed #CarbonSink on agenda for #COP26...

Here too #China leads world in #carbon damage—by far.

Time for accountability on #RoadToGlasgow!

foreignpolicy.com/2021/09/10/chi…
#Ocean covers 71% of world’s surface..<10% mapped w/ modern sonar.

Salt marshes, mangroves, seagrass beds & ultra-deep abyssal #seabed absorb large quantities of #CO2 from atmosphere & balancing critical #climate systems.

Disrupting risks grave & potentially irreversible harms
.@Nature: “#marine sediments are the largest pool of organic #carbon on the planet.”

Est. vol. ~7 trillion metric tons—>3X cumulative anthropogenic #CO2 emissions since 1750.

Bottom trawl #fishing & #seabed mining—both #PRC-led—risk damaging disruption.

foreignpolicy.com/2021/09/10/chi…
Read 25 tweets
THREAD

~0.35%. That’s the annual methane reduction needed for agriculture CH4 to be #ClimateNeutral. Reduce ~5% annually, we can neutralize all additional warming from ag CH4 since the '80s. WE CAN DO THIS!

More on @CGIARclimate & @nature_org paper ⬇️
bit.ly/3mDg6BC 1/
GWP* vs GWP100 better describes how #methane emissions impact the climate. Using GWP100 overestimates the warming impact of constant CH4 emissions by 3-4 times.

AND GWP100 misses climate benefits with decreasing emissions.

AND undersells warming when CH4 emissions rise.

2/
Why is GWP* important? From the paper: GWP* emphasizes CH4 reductions can only contribute meaningfully to limiting climate change, as long as CO2 hits net-zero.

GWP* shows the true benefits w/ CH4 cuts. Making the work farmers/ranchers are doing to cut CH4 more significant. 3/
Read 12 tweets
Bonjour @Fanny_Agostini ! Suite à votre chronique sur @Europe1 ce matin sur le #méthane entérique des bovins, je me permets de préciser quelques éléments.

#thread à dérouler ⤵️

#ceuxquifontlelait #FrAgTw
La très large majorité du #méthane émis est éructé et ne provient donc pas des flatulences des bovins !
#ceuxquifontlelait #ceuxquifontlaviande

idele.fr/no_cache/reche…
⚠️ Sachez par ailleurs qu'une vache qui digère bien émet... davantage de #méthane qu'une vache qui digère mal !!!

En effet, elle parvient à valoriser davantage les aliments de la ration dont les ressources cellulosiques et donc elle émet + de méthane !
Read 11 tweets
🚨📣 Les additifs alimentaires comme approche stratégique pour réduire la production de méthane entérique chez les bovins : modes d'action, efficacité et sécurité
@HonanMallory @ErmiasKebreab

#thread explicatif en 🇫🇷 ⤵️

@InstitutElevage @CarbonAgri @LaitEtClimat #méthane
Le #lait et la #viande issus des ruminants occupent une place importante en l'alimentation humaine. Les bénéfices nutritionnels viennent de la capacité à transformer des ressources cellulosiques en denrées à haute valeur nutritive.
#ceuxquifontlelait #ceuxquifontlaviande #FrAgTw
Mais 2 enjeux demeurent importants pour les ruminants
➡️ la surface utilisée
➡️ les émissions de #méthane entérique (sujet traité dans la publication )

Rappel des chiffres d’utilisation des surfaces en 🇫🇷 (chiffres @Agri_Gouv) ⤵️
Read 13 tweets
THREAD: What the world wants from John Kerry in 2021

Re-joining the #ParisAgreement isn't enough, say 25 climate ministers and advocates we interviewed from six continents. Deeds before words: Legislating a tough 2030 U.S. emissions reduction legislation is 1st serious step
2) But the world wants the words too, hoping Kerry will be world's climate cheerleader: convincing reluctant and developing country governments (also with $) to set aggressive climate goals, which many pinpoint as including carbon neutrality by 2050.
3) World's moved on from Obama era. Jacob Werksman (the EU’s international climate adviser) warned Obama alums on Biden’s team “they can’t expect to be treated the same way” as four or eight years ago
Read 21 tweets
@NjHassel sadly passed away on January 8th. He was an exceptional human being, father, husband, friend and scientist.

A 🧵highlighting some of his many scientific contributions.
#fungi #nitrogen #isotopes #climatechange 1/n Image
@NjHassel did this MS with Matthew Germino at @IdahoStateU

He tested how Cenococcum colonization influences establishment of young conifers at alpine-treeline. 2/n

nph.onlinelibrary.wiley.com/doi/full/10.11…
He did his PhD with Michael Allen at @UCRiverside focusing on ecophysiology of #tropicalforests

He described strategies by evergreen and drought-deciduous trees to overcome seasonal water limitations in tropical forests. 3/n

link.springer.com/article/10.100…
Read 10 tweets
Today's @Ben_Geman generate shows that #methane venting and flaring in TX and ND reached record highs in 2019.

This has serious implications for the lifecycle GHG emissions of natural gas power plants. US average leakage rate masks a lot of variation. 1/
axios.com/venting-flarin…
So, Alan Strayer - UG student in our lab, painstakingly traced gas flow from production basins to power plants to estimate state-specific leakage rates.

US avg. leak rate is ~2%, but states in the Midwest/SW have far higher leakage while states in NE/SE are lower. 2/ Image
Part of this is because of high venting/flaring as @Ben_Geman reports, in the Permian & Bakken basins, but also Canadian imports.

Looking at power plants by state, we see that states in MW/SW have higher emissions intensity than plants in the NE. 3/ Image
Read 6 tweets
My personal analysis of current events, based on my knowledge of climate.
It will require 30 minutes of your time
For weeks, i have mentioned
#Methane releases in the #arctic
Incredible sea surface temperatures (SST) in the east siberian arctic shelf (ESAS) , other arctic seas
This is an analysis of the latest scientific study published by Dr Shakhova, analysed by "just have a think" .
It will give you a quick insight of the available knowledge on the topic

This is a 7 year old video from doctor Shakhova, warming of potential problems.
Warming seas, warming sea bed , no ice coverage, destabilizing methane clathrates.
Sounds familiar?
Please listen ..it's only 8 minutes
Read 11 tweets
D. Trump's administration has loosened #methane emissions rules for the oil and gas sector. Methane is the second contributor to #ClimateChange, behind carbon dioxide, and methane emissions are increasing (worldwide and in the USA).

[1/3]

apnews.com/55e57729da773a…
For instance, the twice-yearly requirement for oil and gas companies to inspect for methane leaks on equipment installed after 2015 is dropped.

[2/3]
Without strong federal regulation from the @EPA, regulation will have to come from the states. If some have strict standards, such as California, other don't. Amongst them is Texas, where the Permian bassin - the 1st oil production site worldwide - is located.

[3/3]
Read 3 tweets
Alors que l'extraction gazière européenne poursuit son déclin géologique depuis 2005, le projet de gazoduc Nord Stream 2 entre la Russie et l'Allemagne pourrait ne jamais voir le jour du fait de menaces américaines.

[1/X]

lesechos.fr/industrie-serv…
Pour le climat, ce serait une bonne chose que ce projet ne voie pas le jour car le gaz fossile est un contributeur important au changement climatique, ne valant guère mieux que le #charbon et le #pétrole si l'on prend en compte les fuites de #méthane sur le cycle de vie.

[2/X]
Cet abandon poserait cependant des questions de sécurité énergétique, de nombreux Etats européens (ainsi que l'UE) ayant des politiques résolument pro-gaz et les extractions européennes étant en déclin.

[3/X]
Read 6 tweets
Thread

I want to talk to you about blowdowns. (Be careful with that word in presentations. I've slipped a time or two.) 😳

During a blowdown all the #methane in a facility's system is released into the atmosphere.
Blowdowns may be scheduled for maintenance and repair, or they may be emergencies which happen quite often.

This video makes visible the normally invisible emissions from a pipeline blowdown

This @TCEQ emissions event report estimation covers a blowdown at an @EnergyTransfer #ClimateCriminals pipeline. The blowdown released 5866202.0 lbs of #methane.
Read 4 tweets

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