ZLabe - Network

Last month was the 4th lowest #Antarctic sea ice extent on record for the month of MarchThis was 1,070,000 km² below the 1981-2010 March...

Last month was the 4th lowest #Antarctic sea ice extent on record for the month of March

This was 1,070,000 km² below the 1981-2010 March average. Data from NSIDC at https://nsidc.org/data/seaice_index 🌊

I included a new visualization on my climate indicators page, which shows a time series trace of monthly-average Northern Hemisphere...

I included a new visualization on my climate indicators page, which shows a time series trace of monthly-average Northern Hemisphere near-surface air temperature anomalies compared to the Southern Hemisphere.

Follow along at https://zacklabe.com/climate-change-indicators/. Data from @CopernicusECMWF ERA5 reanalysis.

🚨 March 2025 #Arctic sea ice extent was the lowest on record...This was 1,290,000 km² below the 1981-2010 average. March ice extent is...

🚨 March 2025 #Arctic sea ice extent was the lowest on record...

This was 1,290,000 km² below the 1981-2010 average. March ice extent is decreasing at about 2.46% per decade. Data: NSIDC (https://nsidc.org/data/seaice_index)

100 years of April sea ice. Note that variability is still mostly confined to the outer marginal seas in boreal spring (North Pacific/North...

100 years of April sea ice. Note that variability is still mostly confined to the outer marginal seas in boreal spring (North Pacific/North Atlantic).

Data set available from 1850 through 2017. Summary of methods: https://carbonbrief.org/guest-post-piecing-together-arctic-sea-ice-history-1850

Thanks to a follower suggestion, I've added a visualization showing the mean #Arctic sea ice extent for each summer season...

Thanks to a follower suggestion, I've added a visualization showing the mean #Arctic sea ice extent for each summer season (June-September). This can be a way of tracking whether each region is becoming seasonally ice-free.

Graphic will be updated annually at: https://zacklabe.com/arctic-sea-ice-figures/

Temperature anomalies by latitude band for every month of 2024...Plot shows zonal-mean surface air temperature anomalies, where latitude =...

Temperature anomalies by latitude band for every month of 2024...

Plot shows zonal-mean surface air temperature anomalies, where latitude = x-axis (not scaled by distance). Note that there is coarse data (e.g., flat line ends) at the poles (GISTEMPv4 data). Graphic from https://zacklabe.com/climate-change-indicators/

Evolution of lower atmosphere (at 925 hPa level) temperatures during the #Arctic freeze season (averaged over October to February). 2025 is...

Evolution of lower atmosphere (at 925 hPa level) temperatures during the #Arctic freeze season (averaged over October to February). 2025 is a new record in this dataset.

*Note: map shows temperature anomalies (for 2024-2025), while the line shows the actual temperature. Graphic from https://zacklabe.com/arctic-temperatures/

Monday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data)• about 570,000 km² below the 2010s mean• about...

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

• about 570,000 km² below the 2010s mean
• about 970,000 km² below the 2000s mean
• about 1,540,000 km² below the 1990s mean
• about 1,920,000 km² below the 1980s mean

Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/

Changes in global temperatures over the last four decades in the month of March...Data from @CopernicusECMWF ERA5 reanalysis...

Changes in global temperatures over the last four decades in the month of March...

Data from @CopernicusECMWF ERA5 reanalysis (https://doi.org/10.24381/cds.f17050d7).

I just added 2 more graphics to my climate change indicators page: daily (left) and monthly (right) global mean surface air temperature 🤒...

I just added 2 more graphics to my climate change indicators page: daily (left) and monthly (right) global mean surface air temperature 🤒

These visuals will be updated in near real-time. Data for both is from ERA5. I hope they are useful.

Follow along at https://zacklabe.com/climate-change-indicators/

Each line represents one year of #Arctic sea ice volume from 1979 [dark blue] to 2024 [dark red]. This year is shown in yellow - now updated...

Each line represents one year of #Arctic sea ice volume from 1979 [dark blue] to 2024 [dark red]. This year is shown in yellow - now updated through February 2025

More visuals of thickness and volume: https://zacklabe.com/arctic-sea-ice-volumethickness/

ICYMI - the latest monthly observations of carbon dioxide (CO₂) and methane (CH₄)... 🥹For more data/info:...

ICYMI - the latest monthly observations of carbon dioxide (CO₂) and methane (CH₄)... 🥹

For more data/info: https://gml.noaa.gov/ccgg/trends/

A look at the significant land warming over the last 50 years during the boreal winter season (January to March)... Data from NOAAGlobalTemp...

A look at the significant land warming over the last 50 years during the boreal winter season (January to March)...

Data from NOAAGlobalTemp v6.0.0 (https://www.ncei.noaa.gov/products/land-based-station/noaa-global-temp).

Most of the world's oceans remain much warmer than average, though the cooler conditions in the east-central Pacific continue (La...

Most of the world's oceans remain much warmer than average, though the cooler conditions in the east-central Pacific continue (La Niña).

Data from NOAA OISSTv2.1 (https://www.ncei.noaa.gov/products/optimum-interpolation-sst)

Latest observations from the CryoSat-2/SMOS merged satellite product show thicker ice north of Greenland compared to last year, but also...

Latest observations from the CryoSat-2/SMOS merged satellite product show thicker ice north of Greenland compared to last year, but also thinner ice near Svalbard and the Barents Sea. This spatial pattern could have implications for the coming melt season.

Graphic from https://zacklabe.com/arctic-sea-ice-volumethickness/

The global mean surface air temperature anomaly (departure from average) so far this year now placed in historical context.Data from...

The global mean surface air temperature anomaly (departure from average) so far this year now placed in historical context.

Data from NOAAGlobalTemp v6.0.0 averaged over January to February.

I've added a new visualization to my global climate change indicator page. I will update this graphic monthly at...

I've added a new visualization to my global climate change indicator page. I will update this graphic monthly at https://zacklabe.com/climate-change-indicators/.

It shows monthly global mean surface air temperature anomalies relative to pre-industrial levels. Red dots indicate the year of the warmest months.

What trend do you see? 🫠

Data provided by NOAA: https://www.ncei.noaa.gov/products/land-based-station/noaa-global-temp

Enjoy your weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data)...• about...

Enjoy your weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data)...

• about 600,000 km² below the 2010s mean
• about 1,010,000 km² below the 2000s mean
• about 1,510,000 km² below the 1990s mean
• about 1,890,000 km² below the 1980s mean

Additional graphs: https://zacklabe.com/arctic-sea-ice-extentconcentration/ 🧪⚒️🌊

Well the melt season is now rapidly underway 😳

Well the melt season is now rapidly underway 😳

Simulated reconstruction of March #Arctic sea ice thickness since 1901. The ice is thinning in winter too.Information about this data set is...

Simulated reconstruction of March #Arctic sea ice thickness since 1901. The ice is thinning in winter too.

Information about this data set is available at http://psc.apl.uw.edu/research/projects/piomas-20c/. Note that it is only updated through 2010 due to ERA-20C forcing (https://climatedataguide.ucar.edu/climate-data/era-20c-ecmwfs-atmospheric-reanalysis-20th-century-and-comparisons-noaas-20cr).