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Reposted by Adjust for Pre Industrial Climate 1850-1900

Andrew B. Watkins @windjunky.bsky.social · 27/09/2026

While all the talk has been about 2027 being odds on to be the globes hottest year on record (as post-El Nino years see a global boost in warmth), 2026 has quietly slipped into a "more likely than not (ie >50%)" chance of becoming the globes hottest year. dashboard.theclimatebrink.com#global

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Reposted by Adjust for Pre Industrial Climate 1850-1900

Gavin Schmidt @climateofgavin.bsky.social · 14/09/2026

NASA GISTEMP/IRI are debuting a new web page for predictions for the annual mean temperature level and what we can expect next year. data.giss.nasa.gov/gistemp/gmsta/

GISTEMP history from 1980 with estimates for 2026 from two statistical models and the NMME initialized ensemble. Also an estimate for 2027 based on projected ENSO.

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Reposted by Adjust for Pre Industrial Climate 1850-1900

Leon Simons @leonsimons.com · 10/09/2026

🌊🌡📈 Global Sea Surface Temperatures are being shattered yet again. This is probably unprecedented for 100s of thousands of years, based on paleoclimatology.

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Reposted by Adjust for Pre Industrial Climate 1850-1900

Prof. Eliot Jacobson @climatecasino.net · 15/07/2026

My latest video, showing monthly global surface temperature anomalies from January, 1880 through June, 2026. The anomaly is with respect to the 1951-1980 baseline, which on average is about 0.32°C above the 1850-1900 IPCC baseline. Data: data.giss.nasa.gov/gistemp/data...

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Reposted by Adjust for Pre Industrial Climate 1850-1900

Ed Hawkins @edhawkins.org · 08/05/2026

Spiralling global temperatures (1850-2026) It is exactly 10 years since I first put this animated graphic of changes in global temperature online. #ClimateSpiral It instantly went viral. People watched it over and over again. It still offers the power to shock a decade on.

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Reposted by Adjust for Pre Industrial Climate 1850-1900

Extreme Temperatures Around the World @extremetemps.bsky.social · 11/04/2026

March 2026 Globally,according to Copernicus,had a temperature anomaly of +0.53C above the 1991/2020 norm (+1.48C vs. pre-industrial) and was the 4th warmest March on record behind 2024 (+0.73C),2025 (+0.65C) and 2016 (+0.63C).

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Adjust for Pre Industrial Climate 1850-1900 @pre-industrial.bsky.social · 11/11/2025

Adjustments for Global Warming graphs Adjust y-axis to get the Temperature Anomaly relative to Pre-Industrial (1850-1900) Table gives a quick adjustment, tailored to different Global Warming Datasets. This table works for annual anomaly data. Individual month anomalies need further adjustments.

A table with data related to Global Warming.

Sometimes you get a graph which gives "Global Temperature Anomaly", relative to 1991-2020" (or some other baseline).

For the Paris Agreement, you need to adjust the value, to get the temperature anomaly relative to pre-industrial (1850-1900).

This table gives you the "temperature anomaly adjustments" for datasets from: Copernicus, Berkeley Earth, HadCRUT, NASS GISS and NOAA. The adjustments from different baseline periods E.g. 1991-2020 ... to get from those adjustments to 1850-1900 baseline.

There are more accurate tables available at https://parisagreementtemperatureindex.com/global-warming-baseline-adjustments/ ...

Sometimes you need even more accurate tables, E.g. if you need to adjust individual months (baseline 1991-2020) to individual months (baseline pre-industrial). This is because the seasons have actually shifted.

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Adjust for Pre Industrial Climate 1850-1900 @pre-industrial.bsky.social · 11/11/2025

Quick'n'Dirty Adjustments for Global Warming graphs How to adjust y-axis to get the Temperature Anomaly relative to Pre-Industrial (1850-1900) E.g. If the graph uses a 1991-2020 baseline, then add 0.9°C to get the Temperature Anomaly relative to Pre-Industrial More accurate tables are available

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