Looking back from the future: How does Germany become carbon neutral?
Date:
February 16, 2022
Source:
Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Summary:
Researchers have developed a vision for Germany in 2050 that
illustrates ways to achieve a carbon dioxide-neutral life and
economy. In their study they look back from a fictitious future
to the present day.
FULL STORY ========================================================================== Germany in the year 2050. The goal of a carbon dioxide-neutral life
and economy has been achieved: Greenhouse gas emissions have fallen drastically, and unavoidable emissions are counterbalanced. Changes in
energy supply and new solutions in industry, transportation and traffic
are key to avoiding and reducing emissions. Adaptations in agriculture
and land management, such as the rewetting of peatlands and restoration
of seagrass meadows, help to store carbon in natural ways. In addition,
there technological approaches to removing and storing carbon dioxide
(CO2) have been taken.
==========================================================================
In this innovative study, 37 researchers from the Helmholtz Climate Initiative's "Net Zero-2050" focus look back to the present from the
future. In a so-called "backcasting" approach, they bring together
analyses from energy system models, findings on the circular economy in
the carbon system, and evaluations of the national potential for carbon removal. The results are summarized in a retrospective of developments
over the past 30 years from the year 2050. "Our vision helps to focus the discussion on the goal of our societal development," explains Dr. Nadine Mengis, climate scientist at GEOMAR Helmholtz Centre for Ocean Research
Kiel and coordinator of the study. "From our net-zero vision, we can draw conclusions for our actions today: We see that we will only reach our
goal if CO2 emissions are drastically and rapidly reduced by expanding renewables. In addition, we have to remove all CO2 emissions that cannot
be avoided from the atmosphere again. This is the only way to ultimately achieve a zero balance." The vision describes realistic options and
the potential of a net-zero Germany.
The authors draw three important conclusions from their consideration
of the various sectors: "Rapid adaptation of the energy system to a
supply from renewable sources is key to achieving net zero in Germany," explains Dr.
Mengis. But not all emissions can be completely avoided or reduced,
she adds.
Natural storage of carbon dioxide could only be increased to a limited
extent in Germany, she said. "That's why we had to consider technological measures for active removal and storage in geological formations in the ground." The less emissions are cut, the more relevant these approaches
become. "It is crucial to properly account for avoiding and removing
emissions through natural sink enhancement; and the mitigation potential
of peatland rewetting is a prime example of this," Dr. Aram Kalhori,
researcher at the German Research Centre for Geosciences (GFZ) and co-coordinator of the study, adds.
"In our vision, the need for technological measures for CO2 removal arises because, on the one hand, we did not want to assume strong changes in individual behaviour, and on the other hand, we did not want to compensate emissions outside the country," Dr. Mengis summarizes. Implementing all
the measures also requires appropriate legal and political frameworks,
economic flexibility and social acceptance.
"What we need now is a political and societal debate on how we want
to bring Germany to net zero, and we need to make bold decisions,"
Dr. Mengis said.
"However, our vision for Germany in 2050 is only one possible
path. Whether our study describes a desirable net-zero
future or we want to take other paths - - that's something we
can only decide together as a society." special promotion
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edited for style and length.
========================================================================== Journal Reference:
1. Nadine Mengis, Aram Kalhori, Sonja Simon, Carina Harpprecht, Lars
Baetcke, Enric Prats‐Salvado, Cornelia
Schmidt‐Hattenberger, Angela Stevenson, Christian Dold,
Juliane Zohbi, Malgorzata Borchers, Daniela Thra"n, Klaas Korte,
Erik Gawel, Tobias Dolch, Dominik Hess, Christopher Yeates, Terese
Thoni, Till Markus, Eva Schill, Mengzhu Xiao, Fiona Ko"hnke,
Andreas Oschlies, Johannes Fo"rster, Knut Go"rl, Martin Dornheim,
Torsten Brinkmann, Silke Beck, David Bruhn, Zhan Li, Bettina Steuri,
Michael Herbst, Torsten Sachs, Nathalie Monnerie, Thomas Pregger,
Daniela Jacob, Roland Dittmeyer. Net‐Zero CO 2 Germany--
A Retrospect From the Year 2050. Earth's Future, 2022; 10 (2)
DOI: 10.1029/2021EF002324 ==========================================================================
Link to news story:
https://www.sciencedaily.com/releases/2022/02/220216112245.htm
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