Poem for COP28 in East Fork Eagle Creek, Columbia Gorge; James Hansen’s “Global warming in the pipeline” (revised 23 May 2023) notes “Equilibrium global warming including slow feedbacks for today’s human-made greenhouse gas (GHG) climate forcing (4.1 W/m2) is 10°C, reduced to 8°C by today’s aerosols.”; British Antarctic Survey researcher Dr. Kaitlin Naughten says “It looks like we’ve lost control of melting of the West Antarctic Ice Sheet.” meaning, according to a related video, “slow addition of nearly 6 feet [1.8 meters] to sea levels” “in hundreds of years.”

Poem for COP28
in East Fork Eagle Creek,
Columbia Gorge

Below 172-foot Tunnel
Falls

a dead deer,

maybe from crossing

swift winter
current.

I’m guessing

when flesh hit
basalt

it ended quick.

Soon, coyotes would
feast.

I knew it was
metaphor

for something big

but didn’t know how
big.

In a related matter, James Hansen’s “Global warming in the pipeline” (revised 23 May 2023) appeared with this abstract:

“Improved knowledge of glacial-to-interglacial global temperature change implies that fast-feedback equilibrium climate sensitivity (ECS) is 1.2 +/- 0.3°C (2σ) per W/m2. Consistent analysis of temperature over the full Cenozoic era — including ‘slow’ feedbacks by ice sheets and trace gases — supports this ECS and implies that CO2 was about 300 ppm in the Pliocene and 400 ppm at transition to a nearly ice-free planet, thus exposing unrealistic lethargy of ice sheet models. Equilibrium global warming including slow feedbacks for today’s human-made greenhouse gas (GHG) climate forcing (4.1 W/m2) is 10°C, reduced to 8°C by today’s aerosols. Decline of aerosol emissions since 2010 should increase the 1970-2010 global warming rate of 0.18°C per decade to a post-2010 rate of at least 0.27°C per decade. Under the current geopolitical approach to GHG emissions, global warming will likely pierce the 1.5°C ceiling in the 2020s and 2°C before 2050. Impacts on people and nature will accelerate as global warming pumps up hydrologic extremes. The enormity of consequences demands a return to Holocene-level global temperature. Required actions include: 1) a global increasing price on GHG emissions, 2) East-West cooperation in a way that accommodates developing world needs, and 3) intervention with Earth’s radiation imbalance to phase down today’s massive human-made ‘geo-transformation’ of Earth’s climate. These changes will not happen with the current geopolitical approach, but current political crises present an opportunity for reset, especially if young people can grasp their situation.”

As a reminder, Gregor Aisch at Datawrapper provided this “[ . . . 2°C, 3°C, 4°C, 5°C] Degrees of Global Warming” graphic based on the Raftery et.al, 2017 article “Less than 2 °C warming by 2100 unlikely,” in Nature Climate Change, and “Inspired” by Josh Holder, Niko Kommenda and Jonathan Watts’ article in The Guardian, “The three-degree world: the cities that will be drowned by global warming.”