Leon Simons Profile picture
Sep 3 7 tweets 3 min read Twitter logo Read on Twitter
The most important graph in the world has been updated to include the last 150,000 years!

📄 Benthic δ¹⁸O records Earth’s energy imbalance

Great work by Sarah Shackleton, Alan Seltzer, Daniel Bagenstos and Lorraine Lisiecki (2023) in @NatureGeosci

1/
nature.com/articles/s4156…
This shows the Earth's Energy Imbalance from a new perspective.

We have changed the rate at which heat accumulates on our planet beyond anything ever before.

We are finding out what this means together.

And we better pay attention.

Rapid changes come with great risks!

2/2 Image
The paper has a very insightful "agnostic" approach to Earth's Energy Imbalance of the past, by looking at differences in oxygen isotopes from a sea level (water turning to ice and vice versa) and global ocean temperature perspective.

It doesn't seem to matter very much what the heat was directed towards, if you mainly care about the absolute Earth Energy Imbalance numbers.

More in this infographic and description:

Agnostic reconstruction of Earth’s energy imbalance (EEI) from δ18Obenth. Here we outline the steps taken to calculate EEI from δ18Obenth (left to right), which are described in detail in the methods. Briefly, δ18Obenth21 (left) is converted into sea level (second panel, top in yellow) and ocean temperature (second panel, bottom in green) using the assumption that the δ18Obenth signal is entirely attributed to one or the other. We then calculate the energy change associated with ice sheet buildup/melting from the sea level reconstruction (third panel, yellow) and with ocean warming/cooling from the ocean temperature reconstruction (third panel, green). EEI is then calculated by taking the time derivative of the energy changes and averaging over Earth’s surface area (panel 4). The gray lines in panels 3 and 4 show the calculated the global energy change (ΔEglobal) and EEI if we assume a constant 60/40 split of δ18Obenth between ice volume and ocean temperature changes.

The 150,000 year Earth's Energy Imbalance figure (c) from the paper: Image
Data can be accessed here:

zenodo.org/record/8237374
@MartinWermuth @WeatherProf ceres-tool.larc.nasa.gov/ord-tool/jsp/E…
Here I've added the +0.5 W/m² average Earth's Energy Imbalance from 1971-2020 from von Schuckmann et al. (2023)

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More from @LeonSimons8

Aug 13
😳What the f*ck😳

Sometimes I can't help myself and swear.

Two months ago, I thought I'd do something ridiculous and plot the Super El Niño trend of 2015 forward for Sea Surface Temperatures, see dashed lines in red (2023) and green (2024).

I turns out that we are largely running above that..

🌊🌡️📈

The effect of El Niño on the tropical Pacific Sea Surface Temperatures is clearly visible.
Also see the North Pacific and Atlantic:

The anomaly is running off the chart again.

All this extreme ocean surface heat is about to turn into a year of shocking extreme atmospheric temperatures and (even) more extreme weather.

We might be getting a first taste of the Termination Shock from terminating part of our cooling sulphur pollution, while still increasing greenhouse gases.


Also see this long message on how the sun is currently adding to the heat.

And on how greenhouse gases keep the Earth from cooling down.

With some simplified climate energy math.

@d_le_nen The uncertainty is part of the risk:
Read 6 tweets
Aug 8
We have had 36 days in a row of record global surface temperatures.

The 150 days of record ocean surface temperatures are starting to increase atmospheric heat.

Most of the effects of the developing El Niño on global temperatures are still in the pipeline.


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Records are being obliterated.


https://t.co/FIYBNqrUyz https://t.co/EEHBpL4usXclimatereanalyzer.org/clim/t2_daily/
climatereanalyzer.org/clim/sst_daily/

Image
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Read 7 tweets
Jul 31
We are getting a rough look at what the (ab)normal climate of the 2030s will be like.

A single month might even break through +2.0°C https://t.co/8QcM0JlTbN
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See this quick and dirty extrapolation I made last month. July surpassed this.

We might not even need a Super El Niño with the effects of IMO 2020 ship desulphurisation; strong solar activity (11-year cycle) and Hunga Tonga adding to the GHG warming.

The 2015-2016 El Niño introduced global temperatures never observed before.

The 2023-2024 El Niño will do the same.

https://t.co/5eOt9B7bY5

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Read 4 tweets
Jul 28
🔥🌍📈BREAKING @NASA 📈🌍🔥

The Earth's Energy Imbalance from NASA satellite data reached 1.97 W/m² (12-month mean)!!

I called this the most important graph in the world.

This helps to explain all the records currently being broken around the word!

1/ https://t.co/m39mATEupatwitter.com/i/web/status/1…
Image
@NASA Two years ago @NASA and @NOAA published a paper (Norman Loeb et al. 2021) that the rate of global heat uptake had doubled since 2005 up to 2019:

2/
@NASA @NOAA They estimated that the Earth's Energy Imbalance would decrease with La Niña and a negative PDO.

The opposite happened.

3/

Read 11 tweets
Jul 23
🔥🌊All the blue parts of the oceans are colder than average, and the orange, red and pinkish white parts are hotter than average. 🌊🔥

It takes >3000 times as much energy to heat up ocean water by 1°C than it does for the same volume of air. Image
There are still some blue parts in the oceans, but we are heading for 50% ocean heat wave coverage in the following months, as El Niño is expected to strengthen further. Image
Read 8 tweets
Jul 20
🌊🌡️📈
I made a mistake updating the North Atlantic Sea Temperature Anomaly graph today.

It's even worse: Image
For those who don't like that the y-axis keeps changing, I made this version: Image
Seeing some comments on the weakening or even shut down of the AMOC.

These sulphate aerosols kept the AMOC stronger than it would have been without.

Global warming weakens the AMOC, while aerosols in the Northern Hemisphere strengthened it.

Read 7 tweets

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