Last month showed more unusual warmth across the #Arctic, where the extent, thickness, and volume of sea ice also recently set new record lows. Not ideal... Plot shows zonal-mean temperature anomalies, where latitude = y-axis (not scaled by distance). GISTEMPv4 data using their 1951-1980 baseline.

"In a warming world, we will continue to see snow and extreme cold, but these events are becoming the exceptions rather than the rule, and that shift is reshaping our landscape and environment." + Report: climatecentral.org/climate-brie... + Webinar recording: www.youtube.com/watch?v=75S2...

Happy #DecemberSolstice! 🌞 Understanding seasons - a look at the hourly incoming solar radiation during the two solstices (23.5°N/S). I've added a red marker for ease of viewing. Dashed line shows the equator This graphic can be found at zacklabe.com/arctic-clima...

A few days before Christmas and near record high temperatures are occurring around the North Pole in the #Arctic 🎅🥵 Download at zacklabe.com/arctic-tempe...

A massive new report by over 100 scientists modeling the climate effects of the 2022 Hunga volcanic eruption finds "The record-high global surface temperatures in 2023/2024 were not due to the Hunga eruption": juser.fz-juelich.de/...

Our planet that is heating up - watch 100 years of September-October-November temperature departures over land areas (where we live) through the year 2025... Data provided by NOAAGlobalTemp v6.0.0: www.ncei.noaa.gov/products/lan...

Good news - GIOMAS data is back. And I just updated my graphics through November 2025 for both Antarctic sea-ice thickness/volume (zacklabe.com/antarctic-se...) and global sea-ice volume (zacklabe.com/global-sea-i...). Global sea-ice volume has been near a record low almost all year.

Friday ice update - #Arctic sea ice extent is currently the 2nd lowest on record (JAXA data) • about 670,000 km² below the 2010s mean • about 1,190,000 km² below the 2000s mean • about 1,750,000 km² below the 1990s mean • about 2,190,000 km² below the 1980s mean More: zacklabe.com/arctic-sea-i...

Another remarkable spike in temperature is ongoing across the northernmost portions of the #Arctic, with a poleward surge of heat and moisture from the Atlantic. Also note the clear warm Arctic, cold continent temperature anomaly pattern. More graphics at zacklabe.com/arctic-tempe...

Check out the anomalous warmth across the #Arctic and #Antarctic over the last three months. And actually, all latitude bands averaged unusually warm too. Plot shows zonal-mean temperature anomalies, where latitude = y-axis (not scaled by distance). GISTEMPv4 data using their 1951-1980 baseline.

Temperatures over global land areas so far this year are still the 2nd warmest on record (after last year)... 🫥 Data from www.ncei.noaa.gov/products/lan...

Areas in red indicate thinning #Arctic sea ice during the month of December over the last >40 years... 🧊📉 Simulated data from PIOMAS. For more information: doi.org/10.1175/JCLI....

Thursday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data) • about 810,000 km² below the 2010s mean • about 1,330,000 km² below the 2000s mean • about 1,910,000 km² below the 1990s mean • about 2,360,000 km² below the 1980s mean Graphics zacklabe.com/arctic-sea-i...

The freeze-up in the Hudson Bay (Canada) has been one of the latest on record for #Arctic sea ice. This is consistent with the long-term trend of a lengthening open water season. Data from @nsidc.bsky.social at nsidc.org/data/seaice_...

"From climate science to maternal healthcare, research labs to ocean innovation, people across the world have felt the shockwaves of political and financial upheaval..." "For Labe, though, his concerns for the future lie with the next generation of scientists." via @geographical.co.uk

Uhhhh, yikes ☹️ www.nsf.gov/news/intent-...

The annual Arctic Report Card is now out for 2025. It discusses recent changes in the #Arctic, extreme events, and broader human/environmental impacts. This is the 20th anniversary edition. 20 years of rapid change. + Report arctic.noaa.gov/report-card/... + Summary arctic.noaa.gov/report-card/...

Oh no... Seeing the direct tweet is even more frightening. Every day is a new crisis, and the repercussions are unimaginable.

Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.

"The Arctic endured a year of record heat and shrunken sea ice as the world’s northern latitudes continue a rapid shift to becoming rainier and less ice-bound due to the climate crisis, scientists have reported." via @theguardian.com

🌡️📈📊Missed our first Monthly Climate Brief? No problem! Head to our November climate briefing page for the recording, top headlines and graphics. www.climatecentral.org/climate-brie...

Polar night vs. midnight sun in early/mid-December... Animation looks downward at the North Pole (left; 🌙) and South Pole (right; ☀️) over a 24-hour period.

It may be cold today for many🥶, but winter as a season is warming quickly across the country🌡️📈. Learn more about how winter is changing in the long-term across the U.S. tomorrow at our new climate-focused webinar series! 🗓️Tuesday, December 16 | 12pm ET 🔗Register: buff.ly/HOGFZIP

Last month was the 4th warmest November on record for the average global sea surface temperature... 🌊 Graphic using NOAA ERSSTv5 data. Methods described in doi.org/10.1175/JCLI...

Maps of temperature departures averaged over the last month (left), 3 months (center), and 12 months (right) across the #Arctic... Data from doi.org/10.24381/cds...

Looking back over the last 12 months, all latitude bands observed above average temperatures. This was largest in the Arctic region. Plot shows zonal-mean surface air temperature anomalies, where latitude = x-axis (not scaled by distance). Data from NASA GISTEMPv4 (1951-1980 baseline).

47 years of #Arctic sea ice thickness during the month of November... (updated through 2025) Graphic available at zacklabe.com/arctic-sea-i...

Here's an updated view of the 12-month running mean global temperature, which is a simple metric that provides insight on climate change and climate variability. + Graphic from global climate change indicators: zacklabe.com/climate-chan...

Decadal trends in December precipitation show wetter conditions around Svalbard and the Barents Sea region, especially in areas of long-term sea ice loss. + Data: psl.noaa.gov/data/gridded... + More info: doi.org/10.25923/xf7...

100 years of average January-November temperature anomalies over land areas through 2025... Data from NOAAGlobalTemp v6.0.0: www.ncei.noaa.gov/products/lan...

Year-to-year variability with a long-term decline in November #Arctic sea ice volume (bar) and thickness (map). Updated through November 2025 🧊 Additional graphics: zacklabe.com/arctic-sea-i...

Join us! In a few days, @climatecentral.org will be launching a new webinar series on the state of our climate! I’ll provide monthly overviews of current global and U.S. conditions, along with special guests, featured topics, and written reports. ➡️ Sign up at www.climatecentral.org/climate-brie...

Looking back at temperature departures averaged over the last three months - what's it like in your area? 🟥 [red] warmer than average 🟦 [blue] colder than average Dataset (NOAAGlobalTempv6) described in doi.org/10.1175/BAMS...

#Arctic climate rankings are in for November 2025: zacklabe.com/archive-2025/. A historic boreal fall for sea ice conditions (and not in a good way). #OpenScience #OpenData #SciComm #DataViz

🚨 Friday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data) • about 990,000 km² below the 2010s mean • about 1,470,000 km² below the 2000s mean • about 2,060,000 km² below the 1990s mean • about 2,520,000 km² below the 1980s mean Graphics zacklabe.com/arctic-sea-i...

Reconstructing November #Arctic sea ice extent since 1850... Data from @nsidc.bsky.social at doi.org/10.7265/jj4s...

🥵 The heat continues. October was Earth’s 3rd warmest on record. ✅Check out more climate stats in our new monthly briefing reports: bit.ly/4pwSfB8 And register below for the Monthly Climate Brief. 🗓️Tuesday, December 16 | 12pm ET 🔗Register: bit.ly/48AoRE8

November 2025 observed more anomalous warmth across the entire Canadian Arctic Archipelago. The saturated red color indicates all of these areas were at least 5°C above the 1981-2010 average. Data from doi.org/10.24381/cds...

My #Arctic temperature graphics have been updated for November 2025 (ranked in top 5 warmest). New records were reached in my individual Pacific Arctic and Greenland Arctic regional sectors. ➡️ Check it out: zacklabe.com/arctic-tempe.... #DataViz #SciComm #OpenScience #OpenData

"climate science"

The average thickness of #Arctic sea ice reached a new all-time minimum this year (in this dataset)... 📉 More graphics: zacklabe.com/arctic-sea-i...

The temperature is not going down like a rock. Graphic from zacklabe.com/climate-chan...

Starter Packs are one of my favourite features of @bsky.app. I’ve curated 20+ climate-themed packs on everything from health to comedy (all linked on my profile). But this one is special: my very first pack, the colleagues I personally turn to for insight + perspective, most of whom I know IRL.

Our latest episode with awesome 🤩 @zacklabe.com to discuss the importance of data in climate change communication. youtu.be/6RlGo0JjUlI?...

"EPA erases references to human-caused climate change from websites" "The agency modified sections of its website by deleting information about human-created greenhouse gases and the role they play in warming the planet. It also removed links to scientific data and information."

November 2025 was the 3rd hottest November on record globally, following 2023 (warmest) and 2024 (2nd warmest). This month was about 1.54°C above the 1850-1900 pre-industrial average. The last 12-months have been about 1.49°C above it. Summary of month: climate.copernicus.eu/surface-air-...

This is absolutely awful. This was one of the best resources for climate indicators data, and my go-to share for help answering public questions. Luckily I captured some of them on my new U.S. climate page a few months ago: zacklabe.com/united-state...

🚨 Monday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data) • about 840,000 km² below the 2010s mean • about 1,390,000 km² below the 2000s mean • about 2,050,000 km² below the 1990s mean • about 2,510,000 km² below the 1980s mean Graphics zacklabe.com/arctic-sea-i...

Quick look at December sea surface temperature trends across the #Arctic, which are warming on the outer edges of the sea-ice pack. We'll have an update on this in our Arctic Report Card section, which will be released next week. 🌊 More info: doi.org/10.25923/9z9...

Check out the recent "warmth" over #Antarctica! Maps show temperature anomalies over the last month (left), 3 months (center), and 12 months (right) across the Southern Hemisphere. Red areas denote warmer than average temperatures. Data from @copernicusecmwf.bsky.social ERA5 reanalysis.