Environmental/Climate scientist for 30+ years; NAS Member. Samuel A. Graham Dean,
@UMSEAS
@UMICH
. Tweets my own. Thinking grad school? Join us at
@UMSEAS
.
The US has a growing problem w/ climate change. The frequency and severity of climate extremes and disasters will continue to go up, and that while preparedness and adaptation can help, it won't be enough until we stop climate change.
This is what megadrought looks like, and it is what anthropogenic climate change looks like: a dry West getting more dry, caused by precip deficits, but made even worse by ever worsening warming. And it's not just a western issue.
Recent research shows that an uptick in summer temperature just 1 standard deviation above the long term average can cause a significant increase in social unrest. This summer, we’re 6 standard deviations warmer than normal.
“The world’s seas are simmering, with record high temperatures spurring worry among forecasters that the global warming effect may generate a chaotic year of extreme weather ahead. “
Aerosol geoengineering won’t work - “the collapse of the West Antarctic Ice Sheet (WAIS) can only be avoided if we eliminate global emissions of greenhouse gases as quickly as possible.”
Less water due to warming triggers less hydropower, more fossil fuel burning, more warming, less water…a downward spiral that would not exist w more renewable electricity.
#KillingTheWest
The first-ever federal water shortage declared for the Colorado River and US Southwest. We knew it was coming, and know it will get much worse if we don't stop climate change.
+ Just to be super clear - to save the planet, we need to rapidly exit the fossil fuel burning era, plus reduce other greenhouse gas emissions ASAP, AND remove CO2 from the atmo via many more, not fewer, forest trees. CO2 capture won’t work by itself.
This is eye-opening. In short: “record warming in 2023 had a strong negative impact on the capacity of terrestrial ecosystems to mitigate climate change.” This means we likely have an emerging feedback that will cause climate change to accelerate. Not good.
🚨 Collapse of the land carbon sink in 2023 🚨
As the CO2 growth rate reached a record high at Mauna Loa, we set up a low-latency analysis of the carbon budget and found that plants and soils absorbed almost no CO2 last year
@gcarbonproject
@gpbalsamo
Wow - no subsidy required for a huge off-shore wind project. This is the future: “Consisting of 140 11MW wind turbines, the 1.5GW wind farm will generate enough electricity to supply the equivalent of 1.5 million Dutch households”
Extreme nonlinearity poses existential risks: A great deeper dive into how just 1.1°C global warming is having major impacts around the globe, and why we can't afford much more warming. “The straw that breaks the camel’s back syndrome.”
Yes,
@thejuicemedia
is brutally honest and funny, but this is their best ever in the “got their science right, and explained well category”. Watch it to understand what’s wrong w/ the current approach, and what we need to do to get it right.
Murdoch-owned media outlets are a major source of climate denial propaganda around the globe. In the US - the WSJ and Fox News serve the fossil fuel industry while the planet warms up and literally burns. Big issue in UK and OZ too.
Headlines like this are just plain misleading- the study concludes going all out w/ wind would raise US temps by a 0.2 C, whereas going with fossil fuel would mean 4-5 C & on up after this century. Not even close. Put solar in mix & even more misleading.
Let’s say it again and again, many scientists, including climate scientists, DO NOT support this geoengineering. There are safer, more equitable ways to solve climate change.
Climate scientist Lonnie Thompson - “Glaciers have no political agenda, we have to listen to them to hear the truth” Cimate change is real and has to be addressed
The whole world is witnessing what the climate crisis looks like, one disaster, one community at a time. Lives, families, more being destroyed. Why? So fossil fuel & other special interests, the few, can profit at everyone else’s expense. At the expense of future generations too.
An unbelievable warming-supercharged 2023 wildfire season in Canada coming to an end. Huge unprecedented greenhouse gas emissions, worst-ever toxic smoke pollution as far south as Florida.
Climate change has led to the first official "megadrought" of the US instrumental era, and now climate change is creating the era of megafire - in the US, in Oz, in the Amazon, in Siberia, and more.
Pugging a single abandoned well can cut its methane emissions by 99%, and the work requires skills that oil and gas workers already possess. Yet despite the best efforts of state regulators, most abandoned wells — more than 2 million — remain unplugged"!!
That is DRY. Unprecedented dryness is coupled w/unprecedented warmth. The latter serves to oven-dry vegetation & surface water supplies. Makes the drought even more severe. Let global warming continue, and it’ll only get worse. We’re in a 1C warmed world - now imagine 2 or 3C.
A key IPCC finding: “There are no geophysical or biogeochemical barriers stopping us from stabilising the climate” We can do it, it will save lots of $, and it will greatly reduce toxic air pollution.
Yet more confirmation that climate change is having a planetary-scale impact: “Global warming puts increased energy in the atmosphere, resulting in stronger storms with intensified winds that generate increased wave heights”
We’re slowly walking into a growing water crisis, made worse by climate change and overuse of groundwater in much of the world. Halting climate change is key to sustainable water supplies in these regions (e.g., the SW US).
- Eastern Siberian temperatures are climbing: >40°C
- Eastern & Western Siberia & Russian Far East on fire
- Jakobshavn, Helheim, Kangerlussuaq & Daugaard-Jensen glacier in danger
- SST anomalies are climbing: >15°C
- 40% of Greenland is melting
- Canadian Archipelago: >20°C
...
Amazing warming going on in the Arctic. The surface of the great northern ice sheet is melting… in March. As ice sheets melt, sea levels rise, so yes, this is scary news.
Compiling explanation why the GOP is fighting action on climate change, and seemingly does whatever the fossil fuel industry wants, including giving the industry huge amounts of taxpayer money over the years.
@HC_Richardson
Global warming means the atmosphere can, and is, holding more water. This is why rainfall intensity is increasing dramatically in much of world. Our infrastucture has to be engineered for this climate change-supercharged world. Much isn’t, including many dams. Disasters await.
This is so concerning: 400 MILLION people at risk in China, right now, because, shattering all records, water levels at China’s giant Three Gorges Dam are out of control: Epic rains raised inflows to record high way above warning levels
#floods
#climate
Brace yourself if you are in Australia, or go to the beach. Temperatures 12degrees above average, yes Celsius, not Fahrenheit. 'Extreme heatwaves' expected after Christmas and into 2019. Yes, very normal...
Of course, increasing flooding is largely due to increasing intense rainfall, in many areas combined with increasing mean rainfall. All caused mainly by the burning of fossil fuels. This is what AGW looks like.
If we want to a stop climate change, we must stop using natural gas - a horrible greenhouse gas (methane), that when burned emits another, longer-lasting greenhouse gas (carbon dioxide).
“15 years ago, a 100,000-acre fire would be the largest fire of your career. Now, we have one-million-acre fires. It’s hard even for us to comprehend.” This isn’t sustainable or just. We must stop the warming.
Get ready for extreme (and potentially deadly) heat this summer, brought to you by climate change. The good news is we know how to keep it from getting worse: phase out fossil fuels.
I test drove a Tesla Model 3 - amazing car. Charging amazingly fast too, and this is only first gen EV. Easy to see how nice it’ll be when gas powered cars are a thing of the past. Much less pollution, cheaper, faster.
Electric vehicle sales in the US in December 2018 registering nearly double the sales volume of the same month in 2017. Part of this surge is driven by the Tesla’s Model 3, which led the market in the last quarter of 2018.
Nice explanation of what's happening to Texas weather-wise right now. Brutal heat made worse by global warming. This is what climate change looks like.
No surprise: younger American's understand and worry about climate change MUCH more than 10 years ago - and want action to stop it. American's generally feel the same way. VERY pro renewable energy and gov't regulation.
Guess which new political leader makes pleasing Big Oil his top priority even tho his constituents will be among the worst hit by sea level rise, supercharged hurricanes and deadly heatwaves?
+ so what caused global temp to vary over the last 2kyrs on multidecadal time scales? Before 20th century: size & freq. of volcanic eruptions (more = cooler) dominant, whereas since the 19th century, human emissions of greenhouse gases dominant.
US Drought Monitor: across much the West, we have had unusually dry soil and vegetation. Add in record heat. Get unprecedented wildfire. This is what climate change looks like.
+ A COP27 imperative: “Developed countries must step up and provide Pakistan and other countries on the frontlines with the financial and technical resources they need to survive extreme weather events like these deadly floods,”
Most of the heat trapped by human emissions of greenhouse gases (e.g., due to the burning of fossil fuels) ends up in the oceans. Warming has been relentless.
One risk that is becoming clear is the risk of extreme heat - this one has clearly emerged almost everywhere, and that means it's going to get a whole lot worse quickly - almost everywhere - if we don't stop the cause: mainly the burning of fossil fuels.
Just say no to geoengineering. We have better, more durable, and less risky solutions right here on planet Earth: renewable energy plus storage. Clean energy tech does the job w/o all the downsides of geoengineering.
The Southwest megadrought started over 20 years ago and is still going strong even where good summer monsoon rains have helped. The worst megadrought in 1000+ brought to you largely by the burning of fossil fuels.
“Insurance giant IAG has warned a failure to reduce greenhouse gas emissions could result in a world that is "pretty much uninsurable", with poorer communities likely to bear the brunt of the effects“
Climate change isn’t just about warmer temperatures and deadly heatwaves. In many regions, the climate crisis is becoming a water crisis. This includes much of the U.S.
'The study suggests... widespread drying & increases in agricultural drought by up to 200% over most of the Americas... Europe & the Mediterranean region, southern Africa, Southeast Asia, & Australia under moderate-high emissions'
#ClimateCrisis
#NEWS
SW warming is ruining the region's sustainable water supply and forests. Rising temps are also going to make it a much less pleasant place to live if we don't switch to solar & wind energy - wait, that would mean a big economic boost to the region + less climate impacts!
Good news from down under. A top priority must be to end the fossil fuel era. We don’t need fossil fuels. Coal, oil and natural gas drive climate change, generate highly toxic air pollution and cost too much money for what they provide.
Court rules Morrison government grant to develop gas field in Beetaloo Basin invalid
So pleased for
@EDOLawyers
clients
@EnviroCentreNT
on this hard-fought case. Public funding of fossil fuels is now on the radar of litigators everywhere.
Pretty clear Greenland Ice Sheet is having a tough time w/warming. More scary to me is that there is likely a big tipping point ahead for much more ice loss from Antarctic = bigger/faster sea level rise in near future if we keep burning fossil fuels
"Imagine, you are a farmer during a drought, in 2035. It is exceptionally hot, aquifers are depleted, & there are freq black-outs because reservoir levels are so low at the hydroelectric power plant. What would you ask us—the people alive today—to do now?
Some utilities are smarter than others. They understand where the future lies, and rather than fighting it, they embrace it. Because of climate change, we must go all out to ditch fossil fuel in the next 10 years. Fight and lose, embrace and win.
This is not overly alarmist. Solid science agrees that large sea level rise and unprecedented global coastal impacts are ahead if we don’t stop burning fossil fuels to halt climate change.
Failure at COP26 greatly increase the odds that some island nations will be literally submerged forever & wiped off the map. They haven't contributed to the problem, but are sentenced to suffer extinction as nations. This is what climate change looks like.
Fossil fueled death: “While Covid ravaged across the world, air pollution killed about three times as many people. We must fight the climate crisis with the same urgency with which we confronted coronavirus”
As more renewable energy is deployed, the cost will continue to plummet. In the end, the people of the globe get cheaper energy, much less air pollution, and an end to climate change. Big $$ and health savings on each count.
"the [Koch] brothers were most effective thwarting action on climate change and played a pivotal role in not only delaying but derailing any efforts to regulate greenhouse gas emissions." | CBC News -
#climatechange
#climatecrisis
Wind = $ for farmers. “I would say the absence of financial stress has been a real game-changer for me...The turbines make up for the (crop) export issues we’ve been facing”
Good on them: "Christian, Muslim & Jewish leaders joined UN officials on Monday in urging financial institutions to stop bankrolling activities that are driving climate change, including ending support for new fossil fuel projects"
Rep. Castor, FL: “Congress has a "moral obligation" to protect future generations from the costly effects of climate change, including more severe hurricanes, a longer wildfire season and a dangerous sea-level rise.”
In 2020, recognition grew that “net zero” by 2050 isn’t fast enough: too many will suffer toxic air pollution & bad climate impacts if the rich nations don’t speed climate action significantly. Climate justice demands we stop climate change FAST. Before major irreversible change
This Fathers Day I can only think of how unjust, immoral, and un-American it is for our government to be separating children from their planets. I am lucky to be spending my Day w my boys, but I can only think of those kids and their parents. Wake up America - stop this insanity!
In case you're still wondering why China takes climate change and climate action so seriously, hot drought and threats to food and water supplies are just one of their worsening climate change worries.
Will do nothing to slow ocean acidification... or the continued buildup of greenhouse gases in the atmosphere. Sounds like an idea coming out of the fossil fuel industry.
Harvard and Yale scientists are proposing that we tackle climate change by dimming the sun.
It sounds crazy, but according to their research, it could actually cut the rate of global warming in half:
“As temperatures in the Middle East soar over 120C and the Arctic Circle approaches Mediterranean levels of heat, it has never been more imperative for investors to know how much companies are contributing to climate change”
Climate change corruption revealed: "the energy sector has heavily financed conservative candidates who have pushed its interests & helped to reduce regulations on the fossil fuel industry. This...escalated CO2 emissions to dangerous levels"
Last year the PAGES2k project, the major consortium of paleoclimatologists working together to reconstruct climate of the past 2000 years, published its latest data in Nature Scientific Data. Global temperature looks like this.
Bc Chinese leaders understand it will a) save China lots of money in cheaper energy, avoided health & climate change costs, & b) make China lots of money in business as the globe transitions out of fossil fuels. The US is shaping up to lose big due to the lack of nat leadership.
The US West is being baked alive by our fossil fuel burning, which in turn is also acting to dry up rivers, soils and vegetation. This is a big part of the growing wildfire challenge.
Baked America - relentless warming is driving a growing heatwave crisis, multiple growing water crises, and a worsening wildfire crisis. All thanks mostly to the burning of fossil fuels.
A 3C world is a world of suffering and mass migration. “The best way to deal with a 3C world is not to get to a 3C world.” See what three degrees of global warming looks like (a 16 minute video from
@TheEconomist
) via
@YouTube
Look at these paired photos - before/after 1C of global warming took a huge bite out of the CO River. Now, demand climate action from your congressional delegation. If we don't do something HUGE to fight climate change NOW it will get much worse in the SW and elsewhere.