Now looking at a spatial view of temperature anomalies during the December to February 2025 period again highlights the relative Arctic warmth and lack of cold departures to be found anywhere outside of the central Pacific.

Data information at (NASA/GISS GISTEMPv4): data.giss.nasa.gov/gistemp/faq…

Last month was the warmest February on record across the #Arctic Circle...

Dataset from NOAA: ncei.noaa.gov/products/land-ba…

Another global sea level update with satellite altimetry data now processed by CNES/AVISO through late January 2025. It's accelerating.

+ Note that this graph was produced by aviso.altimetry.fr/en/data/pro…

And now the regional temperature anomalies across the #Arctic over the last 12 months...

Data from ERA5 reanalysis at doi.org/10.24381/cds.f17050d7

“What was the first thing scientists discovered?” Asks Jacobl, age 9, from Santiago, Panama.

In our latest Curious Kids column, University of Colorado Boulder engineering professor James Byrne discusses this age-old question. buff.ly/12weacW
#curiouskids

What was the first thing scientists discovered? A historian makes the case for Babylonian astronomy

Science uses careful, organized observations and tests to construct theories that are recorded, passed on to others and built on.

^{The Conversation}

A look at the global temperature over land areas (where we live) for every average January-February period since 1850...

Data provided by NOAAGlobalTemp v6.0.0 (ncei.noaa.gov/products/land-ba…)

Monday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data)

• about 480,000 km² below the 2010s mean
• about 870,000 km² below the 2000s mean
• about 1,290,000 km² below the 1990s mean
• about 1,810,000 km² below the 1980s mean

Plots: zacklabe.com/arctic-sea-ice-ex…

Nearly all of the waters surrounding the current area of #Arctic sea ice were warmer than average during the month of February 2025. This was particularly notable at the ice edge near Alaska.

Data from NOAA OISSTv2.1 (ncei.noaa.gov/products/optimum…) 🌊

Methane (CH₄) is a potent greenhouse gas. Here are the latest monthly observations...

November 2024 - 1940.75 ppb
November 2023 - 1931.75 ppb

+ Data: gml.noaa.gov/ccgg/trends_ch4/
+ More info on trends: pnas.org/doi/abs/10.1073/pnas.…

Looking back at temperature departures in February 2025 - find your location...

🟥 [red] warmer than average
🟦 [blue] colder than average

Dataset (NOAAGlobalTempv6) described in doi.org/10.1175/BAMS-D-24-0012…

Carbon dioxide (CO₂) averaged about 427 ppm in February 2025 (new record high) 🚨

10 years ago February averaged about 401 ppm. Preliminary data from gml.noaa.gov/ccgg/trends/

Meanwhile... "Cuts target world-leading greenhouse gas observatory in Hawaii" (reuters.com/sustainability/cli…)

London Rules

I recently watched an intriguing series on Apple TV titled Slow Horses. Spanning four seasons, the show features a stellar cast led by Gary Oldman, who delivers a compelling performance as Jackson Lamb, a seasoned yet shrewd MI5 agent in charge of a team of misfit spies. The series masterfully blends humor with thrilling espionage, making it irresistibly engaging—I was hooked from the very beginning. Each season is adapted from one of Mick Herron's novels in the Slough House series, with the first season closely mirroring the events of the first book, and so forth. After finishing the final season, I craved more and decided to delve into the books. I recently completed the fifth installment, London Rules, and highly recommend adding it to your reading list. Needless to say, Mick Herron has firmly secured a spot on my list of must-follow authors.

#books

Temperature anomalies by latitude band in February 2025. Pay close attention to the magnitude of this warmth in the #Arctic (x-axis). This is really jaw-dropping.

[Latitude = y-axis (not scaled by distance). Data from NASA GISS (GISTEMPv4) using a 1951-1980 climate baseline]