Yesterday was the first day CO₂ at Mauna Loa was 425 ppm. This is: -likely the first time in the past 800,000 years. -possibly not seen in over 3 million years (mid-pliocene warm period). -A CO₂ forcing equal to 2.5-4°C of warming and 5-25 meters higher global sea level.

Warming-stoked tides eating huge holes in Greenland glacier news.yahoo.com/warming-stoked… via Yahoo News

"These dynamics are not included in models, & if we were to include them, it would increase projections of sea level rise by up to 200% – not just for Petermann but for all glaciers ending in the ocean, which is most of northern Greenland & all of Antarctica.” -Prof. Eric Rignot

Sea level rise is accelerating. Note that this 3.4 mm/year is the mean for the full satellite data record from 1993 to present. For the last few years, the rate is approaching 5 mm/yr.

Zack Labe's graphical information about climate change sets the standard.

Sea-level rise: West Antarctic ice shelf melt 'unavoidable' - BBC News. Well, this news item is a great concern, if anything, I think it understates the situation. bbc.com/news/science-e…

Two Studies on Greenland Reveal Ominous Signs for Sea Level Rise nytimes.com/2023/11/09/cli…

Yesterday, temporarily, planet Earth took its first step over the 2.0 degrees Celsius barrier.

Great piece in nature today exploring if its too late to keep warming below 1.5C (yes, at least without overshoot) but also highlighting the accelerating energy transition that is occurring worldwide. I was happy to help with a few figures in the piece: nature.com/immersive/d415…

Announcing exclusive Greenland/Iceland 2024 Program. Learn from the experts, on location. Space is very limited. To receive brochure, email: [email protected]

Join me in Greenland this Summer, exclusive Fact-Finding Expedition, same as featured last year in NY Times and Discovery. Space still available on 2 programs, starting July 13 & 20. To download the brochure with full information, email [email protected]

What's beyond Code UFB? Yesterday, a new record-high for the global sea-surface temperature was reached at 21.12°C, beating the previous record of 21.10°C. New records should continue almost daily for about the next six weeks, please forgive me if I don't report them all.

February continues Earth's record warm streak axios.com/2024/02/20/feb… Hard to overstate how ominous these record global temperatures are. Watch this for the next several months, to see if the dramatic up trend persists. More heat > glacial melting > higher global sea level.

Rain Comes to the Arctic, With a Cascade of Troubling Changes e360.yale.edu/features/arcti… via Yale Environment 360 Learn about rapidly changing Arctic on location. Spaces still available on July Fact-Finding Expedition. For information, email: [email protected]

Just attending a 3-day workshop on the danger of abrupt ocean circulation changes. Discussions are quite worrying. E.g. in 35 to 45 % of high quality models, convection in the open North Atlantic collapses in the 2030s due to #globalheating. -> Major climate disruption. ☹️

Very well done video showing the simultaneous, compound climate shocks going on all over the World. If people could only see how much extreme weather is happening daily in all parts of the World, they’d understand that we are way off kilter.

New tipping point discovered beneath the Antarctic ice sheet bas.ac.uk/media-post/new… via British Antarctic Survey 🐧

Back from Greenland (via Reykjavik Iceland) - leading my annual program about climate change and rising sea level. The personal experience defies description, but even the airplane seat map helps put the scale in perspective. risingseasinstitute.org/greenland-expe…

Great OpEd by Jeff Goodell about the climate stakes in the election. rollingstone.com/politics/polit…

Greenland / Iceland Fact Finding Expedition. JUL 30-AUG 7, 2025 Few spaces available. Brochure for info and reservations dropbox.com/scl/fi/g6pla7z…