Judith Hauck
@jhauck.bsky.social
Professor of polar biogeochemical modelling at University of Bremen and ocean carbon cycle scientist / marine biogeochemical modeller at the Alfred Wegener Institute for Polar and Marine Research, Germany. Views are my own.
Reposted by Judith Hauck
The concentration of CO2 in the atmosphere is set to reach 425.7 parts per million in 2025.
Emerging climate impacts on the land and ocean carbon sinks contributed 8% to the rise in atmospheric CO2 concentration since 1960.
11/
Emerging climate impacts on the land and ocean carbon sinks contributed 8% to the rise in atmospheric CO2 concentration since 1960.
11/
November 13, 2025 at 7:07 AM
The concentration of CO2 in the atmosphere is set to reach 425.7 parts per million in 2025.
Emerging climate impacts on the land and ocean carbon sinks contributed 8% to the rise in atmospheric CO2 concentration since 1960.
11/
Emerging climate impacts on the land and ocean carbon sinks contributed 8% to the rise in atmospheric CO2 concentration since 1960.
11/
Reposted by Judith Hauck
The land and ocean CO₂ sink are 25% and 7% smaller, respectively, than they would have been without the effects of climate change and variability, on average for the 2015-2024 period.
Combined, this is equivalent to the total sink (land and ocean) being nearly 20% smaller than otherwise.
/10
Combined, this is equivalent to the total sink (land and ocean) being nearly 20% smaller than otherwise.
/10
November 13, 2025 at 7:07 AM
The land and ocean CO₂ sink are 25% and 7% smaller, respectively, than they would have been without the effects of climate change and variability, on average for the 2015-2024 period.
Combined, this is equivalent to the total sink (land and ocean) being nearly 20% smaller than otherwise.
/10
Combined, this is equivalent to the total sink (land and ocean) being nearly 20% smaller than otherwise.
/10
Reposted by Judith Hauck
The land & ocean CO2 sinks were re-evaluated based on stronger evidence & new understanding
• The ocean CO2 sink was re-evaluated upwards, taking up 29% of the total emissions.
• The land CO2 sink was re-evaluated downwards, taking up 21% of the total emissions.
www.nature.com/articles/s41...
9/
• The ocean CO2 sink was re-evaluated upwards, taking up 29% of the total emissions.
• The land CO2 sink was re-evaluated downwards, taking up 21% of the total emissions.
www.nature.com/articles/s41...
9/
November 13, 2025 at 7:07 AM
The land & ocean CO2 sinks were re-evaluated based on stronger evidence & new understanding
• The ocean CO2 sink was re-evaluated upwards, taking up 29% of the total emissions.
• The land CO2 sink was re-evaluated downwards, taking up 21% of the total emissions.
www.nature.com/articles/s41...
9/
• The ocean CO2 sink was re-evaluated upwards, taking up 29% of the total emissions.
• The land CO2 sink was re-evaluated downwards, taking up 21% of the total emissions.
www.nature.com/articles/s41...
9/
Reposted by Judith Hauck
Total anthropogenic CO2 emissions – the sum of fossil & land-use change emissions – have grown more slowly in the past decade1 (0.3% per year on average), compared to the previous decade (1.9% per year).
The growth in fossil emissions is offset by the decrease in land-use change emissions.
8/
The growth in fossil emissions is offset by the decrease in land-use change emissions.
8/
November 13, 2025 at 7:07 AM
Total anthropogenic CO2 emissions – the sum of fossil & land-use change emissions – have grown more slowly in the past decade1 (0.3% per year on average), compared to the previous decade (1.9% per year).
The growth in fossil emissions is offset by the decrease in land-use change emissions.
8/
The growth in fossil emissions is offset by the decrease in land-use change emissions.
8/
Reposted by Judith Hauck
Good news: 35 countries have decreased their fossil CO2 emissions significantly (p<0.05) while growing their economies in the decade 2015-20244, twice as many as during the previous decade (2005-2014; 18 countries.
These 35 countries account for 27% of global fossil CO2 emissions.
5/
These 35 countries account for 27% of global fossil CO2 emissions.
5/
November 13, 2025 at 7:07 AM
Good news: 35 countries have decreased their fossil CO2 emissions significantly (p<0.05) while growing their economies in the decade 2015-20244, twice as many as during the previous decade (2005-2014; 18 countries.
These 35 countries account for 27% of global fossil CO2 emissions.
5/
These 35 countries account for 27% of global fossil CO2 emissions.
5/
Reposted by Judith Hauck
We are - to our knowledge for the first time - not only assessing the potential efficiency of OAE using a global model, but also potential effects on phytoplankton and how phytoplankton can affect OAE efficiency.
Exiting results - enjoy reading 😊
@jhauck.bsky.social
Exiting results - enjoy reading 😊
@jhauck.bsky.social
October 22, 2025 at 3:06 PM
We are - to our knowledge for the first time - not only assessing the potential efficiency of OAE using a global model, but also potential effects on phytoplankton and how phytoplankton can affect OAE efficiency.
Exiting results - enjoy reading 😊
@jhauck.bsky.social
Exiting results - enjoy reading 😊
@jhauck.bsky.social
--> This is also the first publication using the emission-driven AWI-ESM building on a few years of development in the @helmholtz.de Young Investigator Group #MarESys @awi.de
Shout out to @miriamseif.bsky.social and Christopher Danek for the heavy lifting in this work.
Shout out to @miriamseif.bsky.social and Christopher Danek for the heavy lifting in this work.
October 22, 2025 at 9:22 PM
--> This is also the first publication using the emission-driven AWI-ESM building on a few years of development in the @helmholtz.de Young Investigator Group #MarESys @awi.de
Shout out to @miriamseif.bsky.social and Christopher Danek for the heavy lifting in this work.
Shout out to @miriamseif.bsky.social and Christopher Danek for the heavy lifting in this work.