If someone still was in doubt that the world is changing and the temperature is going up. This has devastating consequences for people all over the planet incl. the cities.

Carbon Brief collected the Global Warming Datasets for 2025 Values with common baseline (1850-1900): Average: 1.435 °C 1.45 °C NASA 1.39 °C HadCRUT5 1.41 °C NOAA 1.44 °C Berkeley Earth 1.47 °C Copernicus ERA5 1.46 °C JRA 1.44 °C DCENT 1.42 °C China-MST Source: www.carbonbrief.org/state-of-the...

2025 goes down as the ~3rd-warmest year on record (based on ERA5). Like in 2024, every single day this past year was warmer than the average of even the most recent reference period (1991-2020).

A new version of "We need a bigger Y Axis". The Arctic Sea Ice Volume on 4th Jan 2026, is so low, that it is hiding behind the key. Source: polarportal.dk/en/sea-ice-a... - by @polarportal.bsky.social

How long does it take from the first appearance of a global warming milestone, to it being permanent? 2025: 3rd successive year with at least one month reaching 1.75 We have now had 32 consecutive months over 1.25C This graphic has smoothing. The last three years were 6, 11 and 6 months over 1.5C

#graphicdujour phenology

2025 Update. Spiralling Past 1.5C Paris Agreement Lower Limit Data: Copernicus ERA 5 - @copernicusecmwf.bsky.social #ClimateChange #GlobalBoiling

An update to a classic #ClimateInactionStripes #ShowYourStripes CC: @tadziomueller.bsky.social

Global Warming surging upwards in waves. The last 365 days: * 100% over 1.0C * 50% over 1.5C * 4% over 1.8C The post 2024 mega-surge hasn't fully bottomed out yet. What will 2026 bring us? #ClimateChange #GlobalBoiling

The 3 Year Average for Global Warming just passed 1.5C The 2 Year Average passed 1.5C in November 2024 I wondered: what is the longest running average, that equals 1.5C for any given date What about the other Global Warming Milestones: 0.5C, 0.75C, 1C, 1.25C, 1.75C Data: ERA5

Just noticed that the Berkeley Earth data already has the 3-year average over 1.5C

800 individual days have been at least 1.5C above the Pre-Industrial baseline Summer 2025 was largely under 1.5C > Will we pass 900 days in 2026? > Will we pass 1000 days by 2027? > Will the Loess 30-yr trend pass 1.5C before 2028? Data: Copernicus ERA5 - Global Mean Surface Temperature Anomaly

The Northern Pacific Ocean is currently smashing temperature records. And it is reaching these levels far earlier than the current generation of climate models had expected. A short thread 🧵

The #Arctic Annual Sea Ice Minimum isn't what it used to be. There is now a huge area of ice under 1.5m thick, and only tiny patches over 3.5m thick. @polarportal.bsky.social

In Berlin wird es (wenig überraschend) auch wärmer. Ich finde folgende Darstellung ganz anschaulich. Mit dem Unterschied Nordost-Deutschland vs Südfrankreich kann denke ich jeder etwas anfangen.

Global warming surging upwards in waves. The last 365 days: * 100% over 1.2C * 67% over 1.5C * 5% over 1.8C Last 100 days averages below 1.5C First day below 1.25C in 700 days The 2024 mega surge is over. When will the next one be? Details in Alt Text #ClimateChange #GlobalBoiling

Lowest global sea ice area for the date since 1979 🧪 (Just)

1000 Day Running Average crosses 1.5C Details in Alt Text #ShowYourStripes @copernicusecmwf.bsky.social

ENDLESS RECORD HEAT IN INDONESIA In more than 2 years, not a single day has passed without heat records in Indonesia. Today Tanah Merah broke BOTH its records of May highest minimum and maximum with 25.9/36.4 It had already broken those of all months of 2023,2024 and 2025 Crazy

Brutal temperatures forecast for Pakistan, by 15th May 2025.

The #Arctic sea ice isn't what it used to be. The area covered is similar, but now much thinner. Details in Alt Text. @polarportal.bsky.social

I was wondering if the percentage-of-days above a global warming milestone was fairly steady, at the point the trend line passed that milestone. I settled on using percent-of-days-in-previous-7-years that were over a given milestone. An ugly, but interesting graph. Explanation in the Alt Text.

Global warming surging upwards in waves. The ENSO 3.4 line shows that El Nino's line up well, with the warming surges. The last 365 days: * 100% over 1.3C * 76% over 1.5C * 5% over 1.8C Details in Alt Text #ClimateChange #GlobalBoiling

Berkeley Earth Data shows that the Loess-15-year window trendline passed 1.5C in Jan 2025 Hyperbole warning: Other (less jumpy) trend line smoothing functions and other datasets won't get to 1.5 for a while Interesting, for the climate data nerds though Details in Alt Text

Every day in 2025 has been above 1.5C, so far. Individual Days, where Global Warming is above 1.5C and 1.75C keep coming. Details in Alt Text

Global warming surging upwards in waves The last 365 days: * 100% over 1.3C * 77% over 1.5C * 9% over 1.8C Details in Alt Text #ClimateChange #GlobalBoiling CC: @marchudson.bsky.social @allouryesterdays.bsky.social

Carbon brief collected the Global Warming Datasets Average is 1.54C All relative to 1850-1900 baseline 1.47 C: Nasa GISTEMP 1.53 C: HadCRUT5 1.46 C: NOAA 1.62 C: Berkeley Earth 1.60 C: Copernicus ERA5 1.59 C: JRA-3Q 1.52 C: Japanese Met Agency www.carbonbrief.org/state-of-the...

Arctic Sea Ice Volume - Kind of amazing that for over 10 months of the year: Either: ... 2005 was above the 2024 maximum (6 months) Or: ... 2024 was below the 2005 minimum (4+ months) #ClimateChange #Arctic

- 702 individual days above 1.5C Paris Agreement (Cumulative since 1940) - 76% days in 2024 over 1.5C - When will loess trend line first cross 1.5C ? parisagreementtemperatureindex.com/1000-day-cli... Data: Copernicus ERA-5 Note: Trend line shifts as new data is added: bsky.app/profile/rees...

I was wondering how long it takes from the first appearance of a global warming milestone, to it being a permanent fixture Graph's data smoothing underplays 2024 raw data, which has 12 months over 1.25C and 11 months over 1.5C parisagreementtemperatureindex.com/months-above... Details in alt text

My favoured Trend line for Global warming moves way more than I expected GMST Anomaly data is noisy. The loess-30-yr trend line shifts as the latest data is added E.g In hindsight we might see that we crossed 1.5C years earlier than initially thought. Look at 1.25C moving from Dec 2022 to Jul 2020

Spiralling Past 1.5C Paris Agreement Lower Limit Data: Copernicus ERA 5 @copernicusecmwf.bsky.social Details of graphic, and data tests: parisagreementtemperatureindex.com/spiral-of-gl...

I was wondering how the seasons were shifting We are on course to lose the full winter season, and gain a new "super summer" season (In terms of global average temperature) parisagreementtemperatureindex.com/globally-shi... Data set: Copernicus ERA-5

By 1st October 2024 the globe has experienced: > 612 days over 1.5°C > 100 days over 1.75°C > 6 days over 2°C ... Global Mean Surface Temperature, relative to Pre-Industrial. parisagreementtemperatureindex.com/1000-day-cli... Data: Copernicus ERA5

Given that all the hottest 86 days since 1940, have happened in 2023 and 2024 ... I was wondering how the record hottest days had progressed through the years. parisagreementtemperatureindex.com/hottest-days... Data: @copernicusecmwf.bsky.social ERA-5 1940 - Present

#WarmingTapestry shows global temperature anomalies surging upwards in waves Last 365 days: * 100% over 1.3C * 79% over 1.5C * 10% over 1.9C parisagreementtemperatureindex.com/warming-tape... @edhawkins.bsky.social - #ShowYourStripes @copernicusecmwf.bsky.social - data

I was wondering how long it takes from the first appearance of a temperature milestone, to it being permanent fixture Individual months with an anomaly over 1C started in the 1990's, and by late 2010's virtually all months average over 1C parisagreementtemperatureindex.com/months-above...