Mike Sparrow
@drmikesparrow.bsky.social
Chief of WMO World Climate Research and Head of World Climate Research Programme secretariat. Fitness geek. #Climate #Polar #Ocean…. Posts my own.
See @wcrpclimate.bsky.social
See @wcrpclimate.bsky.social
Collapse of critical Atlantic current is no longer low-likelihood, study finds:
www.theguardian.com/environment/... #climate #climatecrisis #ocean #SDG13 #SDG14
www.theguardian.com/environment/... #climate #climatecrisis #ocean #SDG13 #SDG14
Collapse of critical Atlantic current is no longer low-likelihood, study finds
Scientists say ‘shocking’ discovery shows rapid cuts in carbon emissions are needed to avoid catastrophic fallout
www.theguardian.com
August 29, 2025 at 5:34 AM
Collapse of critical Atlantic current is no longer low-likelihood, study finds:
www.theguardian.com/environment/... #climate #climatecrisis #ocean #SDG13 #SDG14
www.theguardian.com/environment/... #climate #climatecrisis #ocean #SDG13 #SDG14
Reposted by Mike Sparrow
New science blog:
As the competition phase of the #AIWeatherQuest starts, the organisers introduce the competition framework and establish a baseline by assessing the skill of current dynamical sub-seasonal forecast models.
➡️ www.ecmwf.int/en/about/med...
@wmo-global.bsky.social
As the competition phase of the #AIWeatherQuest starts, the organisers introduce the competition framework and establish a baseline by assessing the skill of current dynamical sub-seasonal forecast models.
➡️ www.ecmwf.int/en/about/med...
@wmo-global.bsky.social
August 19, 2025 at 8:56 AM
New science blog:
As the competition phase of the #AIWeatherQuest starts, the organisers introduce the competition framework and establish a baseline by assessing the skill of current dynamical sub-seasonal forecast models.
➡️ www.ecmwf.int/en/about/med...
@wmo-global.bsky.social
As the competition phase of the #AIWeatherQuest starts, the organisers introduce the competition framework and establish a baseline by assessing the skill of current dynamical sub-seasonal forecast models.
➡️ www.ecmwf.int/en/about/med...
@wmo-global.bsky.social
Reposted by Mike Sparrow
NEW – Guest post: Why the recent slowdown in Arctic sea ice loss is only temporary | @markengland.bsky.social
Read here: buff.ly/eASA2sG
Read here: buff.ly/eASA2sG
Guest post: Why the recent slowdown in Arctic sea ice loss is only temporary - Carbon Brief
Observations reveal that Arctic sea ice extent at the end of summer has halved, since satellite records began in the late 1970s.
buff.ly
August 19, 2025 at 9:33 AM
NEW – Guest post: Why the recent slowdown in Arctic sea ice loss is only temporary | @markengland.bsky.social
Read here: buff.ly/eASA2sG
Read here: buff.ly/eASA2sG
How long tubes of mud could reveal how Antarctica is changing www.bbc.com/news/article... #Antarctica #Polar #Climate
Antarctic Ocean secrets hidden in layers of seafloor mud
How long tubes of mud - drilled out of the Antarctic seafloor - could reveal how the frozen continent is changing.
www.bbc.com
August 19, 2025 at 6:56 AM
How long tubes of mud could reveal how Antarctica is changing www.bbc.com/news/article... #Antarctica #Polar #Climate
Scientists map Antarctic seafloor canyons to help predict climate breakdown : www.theguardian.com/environment/...
Scientists map Antarctic seafloor canyons to help predict climate breakdown
Study suggests the underwater valleys have a major impact on ice loss and ocean circulation
www.theguardian.com
July 31, 2025 at 3:39 PM
Scientists map Antarctic seafloor canyons to help predict climate breakdown : www.theguardian.com/environment/...
Reposted by Mike Sparrow
🌊❄️🧪 🇦🇶 Please share:
We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October.
If you care about Antarctic research, please read on (1/n)
We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October.
If you care about Antarctic research, please read on (1/n)
July 25, 2025 at 7:50 PM
🌊❄️🧪 🇦🇶 Please share:
We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October.
If you care about Antarctic research, please read on (1/n)
We have learned that the National Science Foundation is moving ahead with plans to decommission the U.S. Research Vessel/Ice Breaker Nathaniel B. Palmer this October.
If you care about Antarctic research, please read on (1/n)
Extreme heat could lead to 30,000 deaths a year in England and Wales by 2070s : www.theguardian.com/environment/...
Extreme heat could lead to 30,000 deaths a year in England and Wales by 2070s, say scientists
Worst-case scenario of 4.3C of warming could result in fiftyfold rise in heat-related deaths, researchers say
www.theguardian.com
July 11, 2025 at 5:29 AM
Extreme heat could lead to 30,000 deaths a year in England and Wales by 2070s : www.theguardian.com/environment/...
Reposted by Mike Sparrow
Interested in joining the APECS international Executive Committee for 2026? There are only a few days left to apply! apecs.is/who-we-are/l...
June 11, 2025 at 4:48 AM
Interested in joining the APECS international Executive Committee for 2026? There are only a few days left to apply! apecs.is/who-we-are/l...
Reposted by Mike Sparrow
Out today in Nature, our paper on the drivers of the record 2023 summer heating of the North Atlantic. Temperatures warmed to record levels in just a few months. The impacts on climate & ecosystems were severe. A thread on how this work came about and what we found.👇👇🧵 www.nature.com/articles/s41...
June 4, 2025 at 3:21 PM
Out today in Nature, our paper on the drivers of the record 2023 summer heating of the North Atlantic. Temperatures warmed to record levels in just a few months. The impacts on climate & ecosystems were severe. A thread on how this work came about and what we found.👇👇🧵 www.nature.com/articles/s41...
Terrible news - The Trump administration is canceling funding for the U.S. Global Change Research Program : www.politico.com/news/2025/04...
Trump moves to hobble major US climate change study
The cuts are a potentially fatal blow to the National Climate Assessment that Congress mandated to ensure the government understands the threats posed by rising temperatures.
www.politico.com
April 9, 2025 at 6:01 PM
Terrible news - The Trump administration is canceling funding for the U.S. Global Change Research Program : www.politico.com/news/2025/04...
Reposted by Mike Sparrow
"To address climate challenges, we need more women in science and policy-making to drive solutions that protect our wetlands." — Prof. Celeste Saulo
➡️ www.ramsar.org/person/prof-...
➡️ www.ramsar.org/person/prof-...
April 5, 2025 at 6:57 AM
"To address climate challenges, we need more women in science and policy-making to drive solutions that protect our wetlands." — Prof. Celeste Saulo
➡️ www.ramsar.org/person/prof-...
➡️ www.ramsar.org/person/prof-...
Reposted by Mike Sparrow
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 nsidc.org/data/seaice_... 🌊
This was 1,070,000 km² below the 1981-2010 March average. Data from NSIDC at nsidc.org/data/seaice_... 🌊
April 3, 2025 at 3:54 PM
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 nsidc.org/data/seaice_... 🌊
This was 1,070,000 km² below the 1981-2010 March average. Data from NSIDC at nsidc.org/data/seaice_... 🌊
Reposted by Mike Sparrow
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: zacklabe.com/arctic-sea-i... 🧪⚒️🌊
• 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: zacklabe.com/arctic-sea-i... 🧪⚒️🌊
March 31, 2025 at 2:41 PM
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: zacklabe.com/arctic-sea-i... 🧪⚒️🌊
• 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: zacklabe.com/arctic-sea-i... 🧪⚒️🌊
Reposted by Mike Sparrow
🚨 It's official - 2025 likely observed the lowest annual maximum #Arctic sea ice extent on record!
Climate change is reshaping the Arctic, all throughout the year.
For more information from @nsidc.bsky.social: nsidc.org/sea-ice-toda...
Climate change is reshaping the Arctic, all throughout the year.
For more information from @nsidc.bsky.social: nsidc.org/sea-ice-toda...
March 27, 2025 at 7:38 PM
🚨 It's official - 2025 likely observed the lowest annual maximum #Arctic sea ice extent on record!
Climate change is reshaping the Arctic, all throughout the year.
For more information from @nsidc.bsky.social: nsidc.org/sea-ice-toda...
Climate change is reshaping the Arctic, all throughout the year.
For more information from @nsidc.bsky.social: nsidc.org/sea-ice-toda...
Reposted by Mike Sparrow
Open Call for Membership: WCRP Global Precipitation Experiment (GPEX) 🌧️
The WCRP GPEX Lighthouse Activity is expanding its Working Groups and invites nominations (including self-nominations) from scientists worldwide.
📅 Deadline: 31 March 2025
🔗 More information below
#ClimateScience #GPEX #WCRP
The WCRP GPEX Lighthouse Activity is expanding its Working Groups and invites nominations (including self-nominations) from scientists worldwide.
📅 Deadline: 31 March 2025
🔗 More information below
#ClimateScience #GPEX #WCRP
March 27, 2025 at 9:09 AM
Open Call for Membership: WCRP Global Precipitation Experiment (GPEX) 🌧️
The WCRP GPEX Lighthouse Activity is expanding its Working Groups and invites nominations (including self-nominations) from scientists worldwide.
📅 Deadline: 31 March 2025
🔗 More information below
#ClimateScience #GPEX #WCRP
The WCRP GPEX Lighthouse Activity is expanding its Working Groups and invites nominations (including self-nominations) from scientists worldwide.
📅 Deadline: 31 March 2025
🔗 More information below
#ClimateScience #GPEX #WCRP
Reposted by Mike Sparrow
Cannot believe that the Mauna Loa Observatory is under threat of closure 😱
It is home to the world’s longest-running measurements of atmospheric carbon dioxide, providing the foundation for understanding the role of greenhouse gases in climate change.
www.ehn.org/key-climate-...
It is home to the world’s longest-running measurements of atmospheric carbon dioxide, providing the foundation for understanding the role of greenhouse gases in climate change.
www.ehn.org/key-climate-...
Key climate research office may close amid federal cost-cutting
A federal cost-cutting initiative may shut down the National Oceanic and Atmospheric Administration (NOAA) office that manages Hawaii’s Mauna Loa Observatory, a critical site for tracking atmospheric ...
www.ehn.org
March 23, 2025 at 2:58 PM
Cannot believe that the Mauna Loa Observatory is under threat of closure 😱
It is home to the world’s longest-running measurements of atmospheric carbon dioxide, providing the foundation for understanding the role of greenhouse gases in climate change.
www.ehn.org/key-climate-...
It is home to the world’s longest-running measurements of atmospheric carbon dioxide, providing the foundation for understanding the role of greenhouse gases in climate change.
www.ehn.org/key-climate-...
Reposted by Mike Sparrow
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 www.aviso.altimetry.fr/en/data/prod...
+ Note that this graph was produced by www.aviso.altimetry.fr/en/data/prod...
March 20, 2025 at 1:35 AM
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 www.aviso.altimetry.fr/en/data/prod...
+ Note that this graph was produced by www.aviso.altimetry.fr/en/data/prod...
Reposted by Mike Sparrow
🔴The #StateOfClimate report, released today, reveals key climate change indicators again reached record levels in 2024.
Check out the full report: wmo.int/publication-...
Check out the full report: wmo.int/publication-...
March 19, 2025 at 8:00 AM
🔴The #StateOfClimate report, released today, reveals key climate change indicators again reached record levels in 2024.
Check out the full report: wmo.int/publication-...
Check out the full report: wmo.int/publication-...
Reposted by Mike Sparrow
We've just published a study @commsearth.bsky.social about the severe 2020 coral bleaching event in the tropical Atlantic caused by massive marine heatwaves 🌊🌡️🧵
Link: www.nature.com/articles/s43...
Link: www.nature.com/articles/s43...
March 19, 2025 at 5:52 AM
We've just published a study @commsearth.bsky.social about the severe 2020 coral bleaching event in the tropical Atlantic caused by massive marine heatwaves 🌊🌡️🧵
Link: www.nature.com/articles/s43...
Link: www.nature.com/articles/s43...
Reposted by Mike Sparrow
New: A NOAA lab in Hawaii that is connected to the longest-running observation of global greenhouse gas concentrations is slated for closure in August, according to a list of lease terminations Democratic members of Congress shared with @washingtonpost.com.
Trump moves to close government lab that tracks planet-warming pollution
The lab is connected to the Mauna Loa Observatory, where scientists gather data to produce the Keeling Curve, a chart on the daily status of atmospheric carbon dioxide concentrations.
www.washingtonpost.com
March 14, 2025 at 6:23 PM
New: A NOAA lab in Hawaii that is connected to the longest-running observation of global greenhouse gas concentrations is slated for closure in August, according to a list of lease terminations Democratic members of Congress shared with @washingtonpost.com.
Earth’s strongest ocean current could slow down by 20% by 2050 in a high emissions future: www.theguardian.com/environment/... #Antarctica #Polar #climate #SDG13
Earth’s strongest ocean current could slow down by 20% by 2050 in a high emissions future
Melting Antarctic ice is releasing cold, fresh water into the ocean, which is projected to cause the slowdown
www.theguardian.com
March 4, 2025 at 6:11 AM
Earth’s strongest ocean current could slow down by 20% by 2050 in a high emissions future: www.theguardian.com/environment/... #Antarctica #Polar #climate #SDG13
Reposted by Mike Sparrow
Welcome to the Bluesky account for Stand Up for Science 2025!
Keep an eye on this space for updates, event information, and ways to get involved. We can't wait to see everyone #standupforscience2025 on March 7th, both in DC and locations nationwide!
#scienceforall #sciencenotsilence
Keep an eye on this space for updates, event information, and ways to get involved. We can't wait to see everyone #standupforscience2025 on March 7th, both in DC and locations nationwide!
#scienceforall #sciencenotsilence
February 12, 2025 at 5:04 PM
Welcome to the Bluesky account for Stand Up for Science 2025!
Keep an eye on this space for updates, event information, and ways to get involved. We can't wait to see everyone #standupforscience2025 on March 7th, both in DC and locations nationwide!
#scienceforall #sciencenotsilence
Keep an eye on this space for updates, event information, and ways to get involved. We can't wait to see everyone #standupforscience2025 on March 7th, both in DC and locations nationwide!
#scienceforall #sciencenotsilence
Reposted by Mike Sparrow
In the next few days, I will be sharing some of our work that I am most proud of from my time at NOAA/GFDL. But I would also like a little normalcy today on my feed, so here's my go-to sea ice data viz update.
#Arctic sea ice extent still remains the *lowest* on record for the date (JAXA). Not good
#Arctic sea ice extent still remains the *lowest* on record for the date (JAXA). Not good
March 1, 2025 at 12:01 AM
In the next few days, I will be sharing some of our work that I am most proud of from my time at NOAA/GFDL. But I would also like a little normalcy today on my feed, so here's my go-to sea ice data viz update.
#Arctic sea ice extent still remains the *lowest* on record for the date (JAXA). Not good
#Arctic sea ice extent still remains the *lowest* on record for the date (JAXA). Not good
Reposted by Mike Sparrow
📣 Digital Earths lighthouse activity is organizing a global pan-hackathon for km-scale models! Dozens of researchers from across the world will participate in this hackathon in real-time.
Here is a curtain-raiser video about the event: loom.ly/xYErXdU
#KmScalemodels #EarthSystemModels #Hackathon
Here is a curtain-raiser video about the event: loom.ly/xYErXdU
#KmScalemodels #EarthSystemModels #Hackathon
loom.ly
February 27, 2025 at 1:58 PM
📣 Digital Earths lighthouse activity is organizing a global pan-hackathon for km-scale models! Dozens of researchers from across the world will participate in this hackathon in real-time.
Here is a curtain-raiser video about the event: loom.ly/xYErXdU
#KmScalemodels #EarthSystemModels #Hackathon
Here is a curtain-raiser video about the event: loom.ly/xYErXdU
#KmScalemodels #EarthSystemModels #Hackathon