Zack Labe

Climate Scientist (Atmospheric) PhD | Postdoc at Princeton University & NOAA GFDL | UC Irvine and Cornell University alum | Sharing data-driven stories | Be kind | Views are my own |

My research and communication interests coincide with disentangling patterns of climate change from climate variability using data-driven methods. Also, scary movie fan!

#Arctic #ClimateChange #DataViz #MachineLearning #OpenScience #Python #SciComm #Weather #wxMastodon #wxTwitter

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ZLabe_at_fediscience.org@mostr.pub

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Last Notes

2024-09-20 23:28:58

Large portions of the #Arctic Ocean are getting wetter in the month of September. The largest trends are found in the Barents-Kara Seas and toward eastern Greenland.
+ Data from GPCP: https://psl.noaa.gov/data/gridded/data.gpcp.html
+ More info https://repository.library.noaa.gov/view/noaa/56614
https://fediscience.org/system/media_attachments/files/113/172/467/317/455/733/original/adfd91835b3794db.png

2024-09-20 23:10:24

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@npub1nqc…cqqc This graphic/data does not provide enough information to infer the effects on hurricane frequency.

2024-09-20 11:47:25

September observes the largest losses of #Arctic sea ice concentration compared to any other month of the year. And NO increases. The largest declines are in parts of the Chukchi & Beaufort Seas.
Sea ice concentration = fraction of ice-cover. More info: https://journals.ametsoc.org/view/journals/bams/105/8/BAMS-D-24-0101.1.xml
https://fediscience.org/system/media_attachments/files/113/169/716/401/226/614/original/9937e788a65f6c43.png

2024-09-20 00:34:46

Trends in September #Arctic sea ice thickness over approximately the last four decades (yes, that shows thinning everywhere)... 🧊📉
Data from PIOMAS. For more information: https://doi.org/10.1175/JCLI-D-17-0436.1
https://fediscience.org/system/media_attachments/files/113/167/071/607/572/586/original/41ef68e0cab64be9.png

2024-09-19 11:58:51

Next week we are hosting the 9th Annual International Polar Film Festival, where recent films about polar and alpine regions will be introduced each day online at: https://www.usapecs.org/polar-film-festival-2024
We are also hosting a webinar roundtable with the filmmakers, which you can register for at: https://iarpc.zoom.us/meeting/register/tZUvduChpjorGdciMghzsl5hcrOTXdVMYNvS#/registration. Hope to see you there!

2024-09-19 01:49:41

Sea surface temperatures are warming across the entire periphery of the #Arctic Ocean in September.
This is especially observed in areas with long-term declines in sea ice concentration, such around the Chukchi and Kara Seas.
Data from NOAA OISSTv2.1. For more info: https://arctic.noaa.gov/report-card/report-card-2023/sea-surface-temperature-2023/
https://fediscience.org/system/media_attachments/files/113/161/703/481/015/016/original/9bc33b173747cdcd.png

2024-09-17 16:34:28

A longer perspective for August #Arctic sea ice extent (since the year 1850)...
You can read more about this dataset at https://carbonbrief.org/guest-post-piecing-together-arctic-sea-ice-history-1850.
https://fediscience.org/system/media_attachments/files/113/153/857/156/644/860/original/4256be574bbeccdd.png

2024-09-17 11:50:12

Global mean sea surface temperature anomalies (departure from average) so far this year ➡️ highest on record
[Data from NOAA ERSSTv5 averaged over January to August]
https://fediscience.org/system/media_attachments/files/113/152/739/624/536/925/original/966dd59ffd2fcfdc.png

2024-09-16 15:04:35

Monday ice update - #Arctic sea ice extent is currently the 5th lowest on record (JAXA data)
• about 260,000 km² below the 2010s mean
• about 1,360,000 km² below the 2000s mean
• about 2,450,000 km² below the 1990s mean
• about 3,150,000 km² below the 1980s mean
Plots: https://zacklabe.com/arctic-sea-ice-figures/
https://fediscience.org/system/media_attachments/files/113/147/842/482/323/393/original/6a3036cc59c2342e.png

2024-09-16 12:34:04

100 years of average August temperature anomalies over land areas through 2024...
Data from NOAAGlobalTemp v6.0.0: https://www.ncei.noaa.gov/products/land-based-station/noaa-global-temp
https://fediscience.org/system/media_attachments/files/113/147/248/690/057/875/original/47e6a1498a9bbcfa.mp4

2024-09-15 12:53:40

August was another month with easily the largest temperature anomalies averaged by latitude band found across the #Antarctic...
[Plot shows zonal-mean temperature anomalies, with latitude = y-axis (not scaled by distance). GISTEMPv4 using their standard 1951-1980 baseline]
https://fediscience.org/system/media_attachments/files/113/141/665/926/301/430/original/d36c82db34cc9957.png

2024-09-14 12:36:51

Carbon dioxide (CO₂) averaged 423 ppm in August 2024
10 years ago August averaged about 397 ppm
Preliminary NOAA data: https://gml.noaa.gov/ccgg/trends/
https://fediscience.org/system/media_attachments/files/113/135/937/456/729/594/original/611b7e9f8481e479.png

2024-09-13 16:35:19

#Arctic climate rankings are in for August 2024: https://zacklabe.com/archive-2024/. No records, but it was definitely a month with unusually mild temperatures and low sea ice conditions.

2024-09-13 12:21:57

Now showing average August #Arctic sea ice volume since the year 1901...
A high resolution version of this graphic can be downloaded at https://zacklabe.com/arctic-sea-ice-volumethickness/. Comparison between PIOMAS-20C and PIOMAS datasets available at https://doi.org/10.1175/JCLI-D-19-0008.1.
https://fediscience.org/system/media_attachments/files/113/130/215/893/007/785/original/f27ade773272556d.png

2024-09-13 00:08:49

Sea ice in the Beaufort Sea region of the #Arctic Ocean is nearing the record low from 2012. This means that there is A LOT of wide open water north of Alaska.
Another thing, check out the purple lines from summer in the 1980s compared to now...
Data: https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/113/127/332/606/711/311/original/464fd2a2d64af6b5.png

2024-09-12 16:04:07

🚨 Last month was the hottest August on record globally and the 15th month in a row with record heat...
See more at https://noaa.gov/news/earth-had-its-hottest-august-in-175-year-record. Data from NOAAGlobalTemp v6.0.0.
https://fediscience.org/system/media_attachments/files/113/125/427/817/225/474/original/b10b3eb14d0ed96e.png

2024-09-12 12:16:22

Aside from a tiny patch of persistent ice around the East Siberian Sea, the entire #Arctic Ocean observed below average sea ice thickness in August. This was again especially significant north of Canada and Greenland.
Graphic: https://zacklabe.com/arctic-sea-ice-volumethickness/. Data from PIOMAS.
https://fediscience.org/system/media_attachments/files/113/124/532/182/275/773/original/21f1e46fdccc49ac.png

2024-09-11 12:19:00

This is another look at the striking anomalies over Antarctica lately. Temperature departures over the last month (left), 3 months (center), and 12 months (right) in the Southern Hemisphere...
Data from https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
https://fediscience.org/system/media_attachments/files/113/118/880/407/285/861/original/42eca24e90883497.png

2024-09-10 23:50:37

It was another month of particularly anomalous temperatures across much of Antarctica in August 2024 (e.g., more than 5°C above the 1981-2010 average)...
ERA5 reanalysis data from https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
https://fediscience.org/system/media_attachments/files/113/115/936/928/022/894/original/f986f11bf61e48c5.png

2024-09-10 12:11:59

There was an accelerated loss of sea ice volume last month in the #Arctic, according to PIOMAS. We are not far from a record low.
Each line represents one year from 1979 [dark blue] to 2023 [dark red]. This year is shown in yellow - now updated through all of August 2024
See more at: https://zacklabe.com/arctic-sea-ice-volumethickness/
https://fediscience.org/system/media_attachments/files/113/113/188/217/847/157/original/856ff5caf0c4f693.png

2024-09-09 21:38:47

My #Arctic sea-ice thickness and volume graphics are updated for August 2024 using PIOMAS data. This month was the 3rd lowest August volume on record. https://zacklabe.com/arctic-sea-ice-volumethickness/ #SciComm #DataViz #OpenScience #OpenData

2024-09-09 17:46:38

- reply

@npub1vxy…gymx Thanks for the suggestion. It's quite tricky to find a suitable color, but I will give it another go.

2024-09-09 17:43:53

Have a good week. Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 250,000 km² below the 2010s mean
• about 1,400,000 km² below the 2000s mean
• about 2,420,000 km² below the 1990s mean
• about 3,110,000 km² below the 1980s mean
Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/113/108/833/022/468/317/original/5a79e9a101453fb0.png

2024-09-09 11:40:14

My monthly #Arctic temperature graphics have just been updated through August 2024, which was a particularly warm summer month averaged across the region: https://zacklabe.com/arctic-temperatures/

2024-09-08 12:57:49

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@npub1e4d…2u9q Yep, you are correct - still quite warm!

2024-09-08 12:57:05

Evolution of August #Arctic sea ice and sea surface temperature (SST) anomalies during the satellite-era...
A summary of last month can be found from the NSIDC at https://nsidc.org/sea-ice-today/analyses/race-bottom
*SST data set (OISSTv2.1) is only available since about 1982
https://fediscience.org/system/media_attachments/files/113/102/042/741/535/344/original/a76a3056c221ed39.mp4

2024-09-07 14:17:11

Last month featured particularly anomalous sea surface temperatures in the Barents Sea region of the #Arctic Ocean (record warm for August). The cooler temperatures also continued in parts of the Bering Sea.
Data from https://psl.noaa.gov/data/gridded/data.noaa.oisst.v2.highres.html
https://fediscience.org/system/media_attachments/files/113/096/695/895/764/969/original/784e522819f230e6.png

2024-09-06 15:15:54

Enjoy your weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 290,000 km² below the 2010s mean
• about 1,400,000 km² below the 2000s mean
• about 2,410,000 km² below the 1990s mean
• about 3,120,000 km² below the 1980s mean
More plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/113/091/263/536/836/677/original/9ceb4614365223eb.png

2024-09-06 13:40:43

Another season of tracking freezing degree days in the high #Arctic has ended. This is a simple measure of relative cold integrated with time. Fortunately, this season was again less anomalous than in recent years (i.e., not as warm).
Follow along daily: https://zacklabe.com/arctic-temperatures/
https://fediscience.org/system/media_attachments/files/113/090/889/014/938/294/original/95339eb353aa2258.png
https://fediscience.org/system/media_attachments/files/113/090/890/281/938/819/original/63e646d691a303e0.png

2024-09-06 13:39:11

2024-09-05 11:52:33

August sea surface temperature anomalies over the last 100 years through 2024. Widespread warm anomalies continue over the Northern Hemisphere extratropics, while signs of La Niña continue in the equatorial Pacific.
Data from ERSSTv5 at https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html
https://fediscience.org/system/media_attachments/files/113/084/802/530/414/924/original/cc2955ae42d68425.mp4

2024-09-05 00:55:02

Another look at #Arctic sea ice extent in the Beaufort Sea region, which is currently near record low levels...
*Note that the basin is geographically constrained (same maximum sea ice cover = flat line; https://zacklabe.files.wordpress.com/2022/08/b203f-nsidc_mapseas.png). Data from https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/113/082/216/451/400/826/original/80cecc500a096626.png

2024-09-04 12:01:06

Last month averaged the 2nd lowest #Antarctic sea ice extent on record for the month of August
This was 1,380,000 km² below the 1981-2010 August average. Data from https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/113/079/173/477/115/539/original/e4b1d28285d97e98.png

2024-09-03 16:48:30

August 2024 #Arctic sea ice extent was the 4th lowest on record...
This was 1,990,000 km² below the 1981-2010 average. August ice extent is decreasing at about 9.88% per decade. Data: https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/113/074/640/644/589/593/original/687475cf73fddd13.png

2024-09-03 13:21:08

The very large sea ice concentration departures continue across the Indian Ocean sector of the #Antarctic. Overall mean ice extent remains well below average too.
Data available from https://nsidc.org/data/g02202/versions/4
https://fediscience.org/system/media_attachments/files/113/073/826/281/923/192/original/a0e692361537e057.png

2024-09-02 19:36:10

#Arctic air temperature rank by month over the satellite era - now updated through August 2024, which was once again unusually warm
+ Ranks: 1=warmest (red), 45/46=coldest (blue)
+ Download visual: https://zacklabe.com/arctic-temperatures/
https://fediscience.org/system/media_attachments/files/113/069/638/459/882/697/original/0eae1bd4222c5f33.png

2024-09-02 13:38:29

Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 330,000 km² below the 2010s mean
• about 1,420,000 km² below the 2000s mean
• about 2,440,000 km² below the 1990s mean
• about 3,160,000 km² below the 1980s mean
Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/113/068/231/828/971/082/original/b4f7504ed0284439.png

2024-09-02 12:23:41

Nearly the entire #Arctic ice edge is reduced compared to only a few decades ago, but the Beaufort Sea in particular is seeing massive areas of open water that would have normally been ice-covered.
Data for August: https://nsidc.org/data/g02202/versions/4. Concentration = fraction of sea ice in a location.
https://fediscience.org/system/media_attachments/files/113/067/937/806/205/201/original/af8e6e4ee7900614.png

2024-09-01 13:52:28

Happy start to climatological fall! Thank goodness! 🥵

2024-09-01 13:17:59

100 years of September sea ice - another one of those wait-until-the-end animations...
Total data set available from 1850 through 2017. Summary of methods: https://carbonbrief.org/guest-post-piecing-together-arctic-sea-ice-history-1850. I also have another version at https://zacklabe.com/arctic-sea-ice-figures/.
https://fediscience.org/system/media_attachments/files/113/062/489/039/827/343/original/56faf8208105dd93.mp4

2024-08-31 20:14:16

- reply

@npub1cgt…f9c7 2023

2024-08-31 20:10:44

Last month was the 2nd warmest on record for the Northern Hemisphere in the month of July...
[(Preliminary) data/info: https://data.giss.nasa.gov/gistemp/faq/]
https://fediscience.org/system/media_attachments/files/113/058/449/930/919/393/original/280a516f88f7deb0.png

2024-08-31 11:58:06

The extent of both #Antarctic and #Arctic sea ice remain anomalously low, which is also not too far from last year's historic satellite-era record...
More sea ice graphics available at https://zacklabe.com/arctic-sea-ice-figures/
https://fediscience.org/system/media_attachments/files/113/056/512/673/523/623/original/8f46f0ebbab9a6f9.png

2024-08-30 13:19:59

Enjoy the weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the 3rd lowest on record (JAXA data)...
• about 370,000 km² below the 2010s mean
• about 1,460,000 km² below the 2000s mean
• about 2,460,000 km² below the 1990s mean
• about 3,190,000 km² below the 1980s mean
Additional plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/113/051/171/809/670/561/original/bb9679a99a681c75.png

2024-08-30 12:48:23

Brief overview of some of our timing of emergence work with explainable AI in the latest NOAA GFDL bulletin: https://www.gfdl.noaa.gov/wp-content/uploads/2024/08/GFDL_Spring_Summer_2024_Bulletin.pdf (open access paper: https://doi.org/10.1029/2023EF003981)

2024-08-30 02:07:13

And now the temperature anomalies across the #Arctic over the last 12 months...
Data from ERA5 reanalysis at https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
https://fediscience.org/system/media_attachments/files/113/048/526/699/647/911/original/673df8218115c1b0.png

2024-08-29 19:07:24

46 years of #Arctic sea ice thickness during the month of July...
Graphic available at https://zacklabe.com/arctic-sea-ice-volumethickness/
https://fediscience.org/system/media_attachments/files/113/046/876/216/192/664/original/3404779a023867b8.png

2024-08-28 11:54:17

Sea surface temperatures were the 2nd highest on record for the month of July in the northern half of the Atlantic Ocean. The last two years remain fairly large outliers.
Data available from NOAA ERSSTv5: https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html
https://fediscience.org/system/media_attachments/files/113/039/510/534/098/670/original/421214284ae41f4c.png

2024-08-28 00:30:45

The variability and multidecadal decline of July #Arctic sea-ice thickness and sea-ice volume...
+ Data information: https://climatedataguide.ucar.edu/climate-data/pan-arctic-ice-ocean-modeling-and-assimilation-system-piomas
https://fediscience.org/system/media_attachments/files/113/036/822/501/930/954/original/ddd5ff8242ab0a0e.mp4

2024-08-27 12:36:21

- reply

@npub13ms…xmsg There are some common themes (some land areas are warming faster than others over decadal time scales), but mostly the regional variations differ from year-to-year due to changes in local weather conditions.

2024-08-27 11:33:01

A record hot month - red shading shows warmer than average temperatures for July 2024...
The average global air temperature was:
+1.21°C above 1951-1980 baseline
+1.32°C above 1921-1950 baseline
+1.45°C above 1880-1920 baseline
GISTEMPv4 data source code: https://data.giss.nasa.gov/gistemp/sources_v4/
https://fediscience.org/system/media_attachments/files/113/033/764/740/744/734/original/29a35c2abace04b7.png

2024-08-26 13:45:43

Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 300,000 km² below the 2010s mean
• about 1,350,000 km² below the 2000s mean
• about 2,420,000 km² below the 1990s mean
• about 3,070,000 km² below the 1980s mean
Plots at: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/113/028/624/232/998/853/original/8d6335d2bf2ced07.png

2024-08-26 12:10:48

The entire Atlantic Ocean is *not rapidly cooling* - for example here is a current map of sea surface temperature anomalies over the last week (https://psl.noaa.gov/map/clim/sst.shtml)
All weekend I have been receiving messages about global cooling ➡️ in response to one misinformed headline 😑
https://fediscience.org/system/media_attachments/files/113/028/251/072/909/566/original/670a837f47183f80.gif

2024-08-25 19:53:14

The mean global sea surface temperature averaged over the last three months remained the highest on record relative to any other May to July period...
Data from @NOAA ERSSTv5: https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html
https://fediscience.org/system/media_attachments/files/113/024/406/895/348/865/original/bf772a13e0c1cdb4.png

2024-08-25 15:33:38

Quick look at August sea surface temperature trends across the #Arctic, which are warming nearly everywhere that sea ice is not found. We'll have an update on this in our next Arctic Report Card, which will be released in December.
Last year's summary: https://repository.library.noaa.gov/view/noaa/56617
https://fediscience.org/system/media_attachments/files/113/023/385/882/271/319/original/61a4a6c5022a4085.png

2024-08-25 14:22:18

Evolution of July #Arctic sea ice and sea surface temperature (SST) anomalies during the satellite-era...
A summary of last month can be found from the NSIDC at https://nsidc.org/sea-ice-today/analyses/chill-gone
*SST data set (OISSTv2.1) is only available since about 1982
https://fediscience.org/system/media_attachments/files/113/023/105/695/951/744/original/0729c0243dc286a9.mp4

2024-08-24 17:03:55

Particularly striking temperature anomalies in the Antarctic during July 2024, but all latitude bands observed above average warmth 🥹
[Plot shows zonal-mean temperature anomalies, with latitude = y-axis (not scaled by distance). GISTEMPv4 using their standard 1951-1980 baseline]
https://fediscience.org/system/media_attachments/files/113/018/078/795/821/446/original/eca6e084e96b9e94.png

2024-08-24 16:59:44

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@npub1u84…mgjx The movement of warmer anomalies is reflected in long-term warming rates, which differ by geographic regions, and through weather patterns (that can move in various directions).

2024-08-24 00:05:15

100 years of average January-July temperature anomalies over land areas through 2024...
[Data from GISTEMPv4; some missing data prior to ~1960, especially over the Antarctic and Southern Ocean]
https://fediscience.org/system/media_attachments/files/113/014/071/575/235/447/original/8fb44cec22c59f40.mp4

2024-08-20 17:05:06

July 2024 data is now available for both Antarctic sea-ice thickness/volume (https://zacklabe.com/antarctic-sea-ice-extentconcentration/) and global sea-ice volume (https://zacklabe.com/global-sea-ice-extent-conc/) from GIOMAS.
Last month's global sea-ice volume has fallen to near-record low levels for the month of July in this dataset.

2024-08-20 12:27:42

As the effects of the recent El Niño subside, the 12-month running mean global temperature is starting to level off... for now (updated through July 2024).
Graphic from https://zacklabe.com/climate-change-indicators/. Data from ERA5.
https://fediscience.org/system/media_attachments/files/112/994/343/708/128/781/original/299873ab8a9826ee.png

2024-08-19 19:21:06

Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 340,000 km² below the 2010s mean
• about 1,360,000 km² below the 2000s mean
• about 2,310,000 km² below the 1990s mean
• about 2,990,000 km² below the 1980s mean
Plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/990/306/975/361/410/original/4d026b277c25cd01.png

2024-08-19 12:58:23

Comparing vertical cross-sections of August temperature trends in the Southern Hemisphere versus Northern Hemisphere...
Locate the climate change indicators of tropospheric warming (https://science.org/doi/10.1126/science.aas8806) and stratospheric cooling (https://pnas.org/doi/10.1073/pnas.2300758120).
https://fediscience.org/system/media_attachments/files/112/988/801/591/161/222/original/b7c7b5dae44fcf14.png
https://fediscience.org/system/media_attachments/files/112/988/801/612/378/502/original/213fd4bddfeebe39.png

2024-08-18 21:10:41

Now showing average July #Arctic sea ice volume since the year 1901...
A high resolution version of this graphic can be downloaded at https://zacklabe.com/arctic-sea-ice-volumethickness/. Comparison between PIOMAS-20C and PIOMAS datasets available at https://doi.org/10.1175/JCLI-D-19-0008.1.
https://fediscience.org/system/media_attachments/files/112/985/075/676/049/874/original/72d58cbdd5e0e3c9.png

2024-08-18 14:37:32

Much of the #Arctic Ocean region is also getting wetter in the month of August, as estimated by GPCP. The largest trends are found in the Barents-Kara Seas region, which correlates with warmer SSTs and less sea ice.
+ Data https://psl.noaa.gov/data/gridded/data.gpcp.html
+ Info https://repository.library.noaa.gov/view/noaa/56614
https://fediscience.org/system/media_attachments/files/112/983/529/638/036/975/original/e7333bd8a107c1c5.png

2024-08-17 12:44:38

Simulated reconstruction of August #Arctic sea ice thickness since 1901. Watch for the last 10 years or so...
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://fediscience.org/system/media_attachments/files/112/977/423/097/385/972/original/3fbccb2fc30bd18f.mp4

2024-08-16 19:37:19

Reconstructing July #Arctic sea ice extent since 1850...
You can read more about this data set at https://carbonbrief.org/guest-post-piecing-together-arctic-sea-ice-history-1850.
https://fediscience.org/system/media_attachments/files/112/973/383/633/571/575/original/e3f9eb8585522134.png

2024-08-16 13:50:03

Have a great weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 300,000 km² below the 2010s mean
• about 1,300,000 km² below the 2000s mean
• about 2,220,000 km² below the 1990s mean
• about 2,860,000 km² below the 1980s mean
Other plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/972/018/150/104/958/original/19a84b4418490694.png

2024-08-16 12:35:20

July sea surface temperature anomalies over the last 100 years through 2024...
Data from ERSSTv5 at https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html
https://fediscience.org/system/media_attachments/files/112/971/724/193/741/520/original/ed73059d6778d93c.mp4

2024-08-16 01:59:15

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@npub124f…yypf Great!

2024-08-16 00:18:14

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@npub124f…yypf Sorry! Which page is not loading?
And thank you, I detail my methods here: https://zacklabe.com/methods-and-open-software/

2024-08-16 00:17:41

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@npub1wcu…rwud Yes! This is always a shocking statistic to me too!

2024-08-15 23:26:35

Each line represents one year of #Arctic sea ice thickness from 1979 [dark blue] to 2023 [dark red]. This year is shown in yellow - now updated through July 2024 😬
+ More visuals of thickness and volume: https://zacklabe.com/arctic-sea-ice-volumethickness/
https://fediscience.org/system/media_attachments/files/112/968/622/548/452/741/original/b62e42824aad7d37.png

2024-08-15 12:09:06

Temperature anomalies over the last month (left), 3 months (center), and 12 months (right) in the Southern Hemisphere...
Data from https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
https://fediscience.org/system/media_attachments/files/112/965/959/216/582/095/original/5ae2ebd93a90a24f.png

2024-08-15 01:35:39

Another monthly update for the three primary greenhouse gases that contribute to human-caused climate change: carbon dioxide, methane, and nitrous oxide...
Data from https://gml.noaa.gov/ccgg/trends/
https://fediscience.org/system/media_attachments/files/112/963/468/114/506/026/original/796e8e3103bc5593.png

2024-08-14 15:12:17

Although the deadline is coming up, there is still time to submit an abstract to our upcoming American Meteorological Society session on communicating climate change and its related uncertainties (joint between CVC and Education conferences): https://ams.confex.com/ams/105ANNUAL/cfp.cgi

2024-08-14 12:12:55

A record high was observed in the Southern Hemisphere for July 2024. The previous record for the month was set in 2023.
Data from https://data.giss.nasa.gov/gistemp/
https://fediscience.org/system/media_attachments/files/112/960/311/678/936/268/original/9e6dc2248fe29e65.png

2024-08-13 12:06:47

July 2024's temperature anomalies easily exceeded 5°C above the 1981-2010 mean across large portions of Antarctica and extending to areas with unusually low sea ice, such as in the Indian Ocean section.
ERA5 reanalysis data from https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
https://fediscience.org/system/media_attachments/files/112/954/624/511/104/730/original/9fafea767ba43df1.png

2024-08-12 22:46:37

Have a good week! Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 310,000 km² below the 2010s mean
• about 1,280,000 km² below the 2000s mean
• about 2,180,000 km² below the 1990s mean
• about 2,880,000 km² below the 1980s mean
More plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/951/478/493/019/722/original/5a2eac6cc5db9853.png

2024-08-12 12:41:04

Global mean sea surface temperature anomalies (departure from average) so far this year ➡️ still the highest on record
[Data from NOAA ERSSTv5 averaged over January to July]
https://fediscience.org/system/media_attachments/files/112/949/097/712/843/078/original/f05d5b26a65aa14c.png

2024-08-11 23:29:30

Arctic sea ice grows and shrinks during the year (seasonal cycle). It reaches its annual minimum extent at the end of every summer (early-mid September).
Currently, 2024's sea ice extent is already below the minimums from the 1980, 1990, and 2000 decadal averages [JAXA data]
https://fediscience.org/system/media_attachments/files/112/945/985/106/050/672/original/d1dead08c016f700.png

2024-08-11 19:53:34

#Arctic climate rankings are in for July 2024: https://zacklabe.com/archive-2024/. Again, no new monthly records.

2024-08-11 13:30:03

Last month's total #Arctic sea ice volume averaged the 7th lowest on record for the month of July... 🧊
+ Simulated by PIOMAS: http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/
+ More visuals: https://zacklabe.com/arctic-sea-ice-volumethickness/
https://fediscience.org/system/media_attachments/files/112/943/628/068/064/844/original/6c30f4def9c4a771.png

2024-08-10 10:56:29

Now in the GISTEMPv4 dataset, July 2024 was the hottest month on record for our planet... 🔥
(Preliminary) data/info available from: https://data.giss.nasa.gov/gistemp/faq/. Small differences are expected between global temperature datasets (uncertainties and different methods).
https://fediscience.org/system/media_attachments/files/112/937/361/489/078/511/original/4c0197cb2bf282e0.png

2024-08-09 19:26:24

A look at the #Antarctic sea ice concentration anomalies in July 2024, which were near record low levels... Persistent warmth and wind contributed to particularly large departures around the Indian Ocean sector of the Antarctic.
Data available from https://nsidc.org/data/g02202/versions/4
https://fediscience.org/system/media_attachments/files/112/933/704/600/871/950/original/31af27d8b441ae63.png

2024-08-09 14:08:38

Have a great weekend! Here's your Friday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 360,000 km² below the 2010s mean
• about 1,250,000 km² below the 2000s mean
• about 2,150,000 km² below the 1990s mean
• about 2,850,000 km² below the 1980s mean
Other plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/932/455/134/295/690/original/b7d9f8529071330b.png

2024-08-09 12:16:36

Last month was the 2nd warmest July on record for the average global sea surface temperature...
Graphic using NOAA ERSSTv5 data (https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html). Methods detailed in https://doi.org/10.1175/JCLI-D-16-0836.1.
https://fediscience.org/system/media_attachments/files/112/932/014/663/465/404/original/78fcfc8e001e6b7e.png

2024-08-08 19:50:10

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@npub1pe7…xpvn The link is working for my internet browser. Here it is again https://zacklabe.com/arctic-sea-ice-volumethickness/

2024-08-08 16:03:30

My #Arctic sea-ice thickness and volume graphics are now updated for July 2024 using PIOMAS data: https://zacklabe.com/arctic-sea-ice-volumethickness/…. No new records.

2024-08-08 12:07:28

Ending the streak of record monthly warmth, July 2024 was in fact the 2nd hottest July on record globally. Some of the largest temperature anomalies, in terms of magnitude, were found over Antarctica.
Summary of the conditions: https://climate.copernicus.eu/surface-air-temperature-july-2024
https://fediscience.org/system/media_attachments/files/112/926/314/866/838/087/original/3e2a678c131c6e6e.png
https://fediscience.org/system/media_attachments/files/112/926/314/873/281/318/original/5926a8a0346365c7.png

2024-08-07 21:01:30

My monthly #Arctic temperature graphics have just been updated through July 2024: https://zacklabe.com/arctic-temperatures/

2024-08-07 11:32:05

Methane (CH₄) is a potent greenhouse gas. Here are the newest monthly observations...
April 2024 - 1931.91 ppb
April 2023 - 1920.56 ppb
Data: https://gml.noaa.gov/ccgg/trends_ch4/
https://fediscience.org/system/media_attachments/files/112/920/513/872/502/555/original/64bd4fab311e1e0d.png

2024-08-06 21:20:43

Carbon dioxide (CO₂) averaged 425.5 ppm in July 2024
10 years ago July averaged about 399 ppm
Preliminary data: https://gml.noaa.gov/ccgg/trends/
https://fediscience.org/system/media_attachments/files/112/917/167/208/867/464/original/c976a199ac71a474.png

2024-08-06 12:17:56

#Arctic sea ice extent has already dropped well below what used to be the average annual minimum in the 1990s (and 1980s). Again, the "melt season" typically ends in September.
+ Additional graphs: https://zacklabe.com/arctic-sea-ice-figures/
+ Small differences will exist between different datasets
https://fediscience.org/system/media_attachments/files/112/915/032/914/245/368/original/98341e5e5bff387f.png

2024-08-05 18:45:57

Join me in tracking this year's #Arctic sea ice minimum!
Sea ice melt substantially slows every September as solar energy decreases and temperatures drop in the far north.
Follow along with the data at https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/910/896/518/758/287/original/20a270d1fdfa2d3b.png

2024-08-05 12:47:00

Have a good week! Here's your Monday ice update - #Arctic sea ice extent is currently the 4th lowest on record (JAXA data)...
• about 340,000 km² below the 2010s mean
• about 1,190,000 km² below the 2000s mean
• about 2,030,000 km² below the 1990s mean
• about 2,770,000 km² below the 1980s mean
Additional plots: https://zacklabe.com/arctic-sea-ice-extentconcentration/
https://fediscience.org/system/media_attachments/files/112/909/484/806/658/145/original/7bd7c9e96cd80a0c.png

2024-08-05 11:08:14

#Arctic air temperature rank by month over the satellite era - now updated through July 2024
+ Ranks: 1=warmest (red), 45/46=coldest (blue)
+ Download visual: https://zacklabe.com/arctic-temperatures/
https://fediscience.org/system/media_attachments/files/112/909/096/098/209/121/original/23a7e10c04f872cc.png

2024-08-04 13:40:55

Last month averaged the *2nd* lowest #Antarctic sea ice extent on record for the month of July
This was 1,850,000 km² below the 1981-2010 June average. Data from the NSIDC at https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/112/904/034/360/811/085/original/2eea3a7be8bd1dfe.png

2024-08-03 13:48:47

July 2024 #Arctic sea ice extent was the 6th lowest on record...
This was 1,580,000 km² below the 1981-2010 average. July ice extent is decreasing at about 6.92% per decade. Data: https://nsidc.org/data/seaice_index
https://fediscience.org/system/media_attachments/files/112/898/403/115/287/178/original/7058a2874ebd4e34.png

2024-08-03 01:29:37

The latest update...
Graphic from https://zacklabe.com/global-sea-ice-extent-conc/
https://fediscience.org/system/media_attachments/files/112/895/495/626/732/141/original/3560d411e4f4f024.png