Leon Simons (looking up)
@LeonSimons8
Host of Climate Chat | Plain climate science & DATAVIZ | Mission: Understanding & protecting our home planet (Recycled from @NASA) | Support me on Patreon
I posted this 2 years ago. After which we experienced 2 years of 1.6°C above the Paris' pre-industrial (1850-1900) baseline. We expected a big jump in global warming because greenhouse gas emissions keep increasing, aerosols decreased and Earth's Energy Imbalance had doubled.
This might be the year everything changes, as those who don't count joules and radiative fluxes are too starting to feel the heat from reducing air-pollution. Many great scientists have tried to inform on this in the past decades (e.g. James Hansen, James Lovelock, Paul Crutzen…
Following the UN International Court of Justice Cimate ruling today on all countries liability to hold the 1.5°C limit - this would be probably be illegal under international law: E.P.A. Is Said to Draft a Plan to End Its Ability to Fight Climate Change nytimes.com/2025/07/22/cli…
It's maind boggling that humanity has tripled nitrogen fixation on land.
Humans have about tripled the amount of Nitrogen fixation over land! And that's the global average, making it much worse regionally.
Heat of the Northern Mid-latitude oceans:
Even with relatively cold tropical oceans, Global Sea Surface Temperatures are close to record high!
To be sure: What's less unfriendly to would-be storms will be more unfriendly to those in the paths of the will-be storms.
The Atlantic isn't looking nearly as unfriendly to would-be storms as it was just a few weeks ago. Today, a deep dive into what's driving the big changes and what it could mean for August. If you like inside baseball, you'll like today's newsletter. ⬇️ michaelrlowry.substack.com/p/changes-afoo…
We use GHG concentrations from ice core data to estimate GHG forcings. Aerosols are here assumed to linearly decrease by -0.5 W/m² from 6,000 years ago to 1750, which also increases the forcing relative to 1750 before that. For more, see: patreon.com/posts/11318191…
Only 2023 and 2024 were warmer, as they were impacted by El Niño.
US inventors also created the first solar panels and nuclear reactors, and were among the first to build commercial wind turbines. Shame we aren't leading those industries as well.
The United States CREATED the oil industry, and today, we’re LEADING it.
Aerosols termination shock status: ongoing. @LeonSimons8
This is astonishing. Global sea surface temperatures are once again pushing close to record breaking temperatures despite the lack of El Nino. This is largely driven by a very, very warm seas in the Pacific & around northwest Europe.
The combination of human caused greenhouse gases and air pollution helped to keep the climate stable while global agriculture developed over the past 6,000 years. This perspective helps to understand how the climate will now change from the past 130,000 years!
This will change our planet forever. On this Earth Day, look at how humanity has increased global greenhouse gas concentrations (here in CO₂-equivalents), compared to the natural changes over the preceding 130,000 years:
Marine heatwaves (#MHW) are intensifying globally 🌊🌡️ 🔵 A MHW has emerged in the #NorwegianSea 🔵 Conditions are intensifying in the eastern #Mediterranean 🔵 MHW conditions are intensifying in Sea of #Japan & #Okhotsk Read more in our bulletin: mercator-ocean.eu/bulletin/marin…
What's 'timid' about this? "The enormity of consequences demands a return to Holocene-level global temperature. Required actions include: (1) a global increasing price on GHG emissions accompanied by development of abundant, affordable, dispatchable clean energy, (2) East-West…
"Implications of Galileo’s approach rattled the establishment. Galileo was opposed not only by the Catholic Church, but by many professors who did not fully understand Galileo’s work and were reluctant to support a heretical viewpoint."
The GISS Formula for scientific research cannot be exterminated. See 8 July - A Formula to Keep the Science Flame Burning - mailchi.mp/caa/a-formula-… Find me on Bluesky: @drjamesehansen.bsky.social
It was about acceleration. But you decided to go for the strawmann argument. The denial about what the science actually shows should be apparent by everyone who understands the data.
For anyone interested in a deeper dive into our recent Nature paper on the 2023 North Atlantic marine heat wave nature.com/articles/s4158… plus some discussion of recent findings related to the SMOC, @danmiller999 does an outstanding job as host with cameos from @LeonSimons8 👇👇👇
I had an amazing discussion with climate scientist @ProfMattEngland today about extreme N. Atlantic warming in 2023, AMOC collapse, & S. Ocean overturning circulation slowdown (which is slowing down faster than the AMOC!). #Oceans #AMOC youtube.com/live/39T7bW7KA… @LeonSimons8
This should gain MUCH MORE attention than is actually does!
Aerosols can have more impact on regional climate than greenhouse gases. A doubling of CO₂ causes a global forcing of about 4 W/m². The Netherlands receives about 25 W/m² more sunlight this year than on average over 1965-1985. That's the day and night, 365-day average.
Insightful Climate Chat about the Human Fingerprint on Climate is now live, with Ben Santer:
Sunday 7/20 at 10am PT on Climate Chat: Human Fingerprint on Climate with renowned climate scientist Ben Santer. YouTube Live & recorded link: youtube.com/live/-iOW6l3nK…
Starting soon! Sunday 7/20 at 10am PT on Climate Chat: Human Fingerprint on Climate with renowned climate scientist Ben Santer. On YouTube & LinkedIn. Links in thread.
Sunday 7/20 at 10am PT on Climate Chat: Human Fingerprint on Climate with renowned climate scientist Ben Santer. On YouTube & LinkedIn. Links in thread. #ClimateCrisis #ClimateAction @LeonSimons8 @drivingmzstacey @radsci
Methane Global Warming Potential (GWP) is about accountability of *emissions*, not about annual average *atmospheric concentrations* and their forcing. This is a mistake many keep making, as both are about methane and use CO₂-equivalent as a unit.