Featured
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News & Views |
Plankton reveal past climate
Marine microfossil assemblages refine sea surface temperature patterns and yield insights into discrepancies between paleoclimate models of the last ice age and observations.
- Marci M. Robinson
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Article |
Sulfur emissions from consumption by developed and developing countries produce comparable climate impacts
Sulfur dioxide emissions due to consumption by developed and developing countries differ in magnitude but produce comparable climate impacts due to the regional distribution of emissions, according to simulations using an Earth system model.
- Jintai Lin
- , Chunjiang Zhou
- & Yongyun Hu
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Comment |
Scientists from historically excluded groups face a hostile obstacle course
Inclusive and equitable geoscience requires identification and removal of structural barriers to participation. Replacing the leaky pipeline metaphor with that of a hostile obstacle course demands that those with power take the lead.
- Asmeret Asefaw Berhe
- , Rebecca T. Barnes
- & Erika Marín-Spiotta
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World View |
Decolonizing geoscience requires more than equity and inclusion
Colonial relationships with Indigenous land and knowledge in geoscience disciplines must be acknowledged to address harm and change how science is done, argues Max Liboiron.
- Max Liboiron
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Comment |
A clean energy future isn’t set in stone
Social scientists and geoscientists must work together to critically evaluate and develop feasible visions for a sustainable future. Is a clean-energy economy more viable than a degrowth future?
- Thomas Franssen
- & Mandy de Wilde
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Comment |
Race and racism in the geosciences
Geoscientists in the United States are predominantly White. Progress towards diversification can only come with a concerted shift in mindsets and a deeper understanding of the complexities of race.
- Kuheli Dutt
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Comment |
The hidden politics of climate engineering
Governments disagree even on the current state of climate change engineering governance, as became clear at the 2019 United Nations Environment Assembly negotiations. They must develop mechanisms to provide policy-relevant knowledge, clarify uncertainties and head off potential distributional impacts.
- Sikina Jinnah
- & Simon Nicholson
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Perspective |
Challenges for the recovery of the ozone layer
Recovery of the stratospheric ozone layer above Antarctica has not been straightforward, as a result of human activities and climate change. The recovery process might be delayed by up to decades if further mitigation actions are not taken.
- Xuekun Fang
- , John A. Pyle
- & Ronald G. Prinn
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News & Views |
Anthropogenic chlorine under watch
Atmospheric levels of chloroform, an ozone-depleting substance not part of the Montreal Protocol, have risen. The increase may be attributable to industrial emissions in Eastern China.
- Susann Tegtmeier
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Article |
Rapid increase in ozone-depleting chloroform emissions from China
Atmospheric levels of chloroform increased after 2010, as a result of emissions in eastern China, according to analyses of measurements and inverse modelling.
- Xuekun Fang
- , Sunyoung Park
- & Ronald G. Prinn
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Comment |
Mental health in the field
Field work is an important and valued part of geoscience research, but can also serve as a source of stress. Careful planning can help support the mental health and wellness of participants at all career stages.
- Cédric Michaël John
- & Saira Bano Khan
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Comment |
Beyond carbon budgets
The remaining carbon budget consistent with limiting warming to 1.5 °C allows 20 more years of current emissions according to one study, but is already exhausted according to another. Both are defensible. We need to move on from a unique carbon budget, and face the nuances.
- Glen P. Peters
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Comment |
Politically informed advice for climate action
Upward estimates for carbon budgets are unlikely to lead to action-focused climate policy. Climate researchers need to understand processes and incentives in policymaking and politics to communicate effectively.
- Oliver Geden
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News & Views |
Metal footprint linked to economy
The annual quantity of metal being used by humans has been on the rise. A new analysis of 43 major economies reveals the extent to which year-to-year fluctuations in metal footprints have been in lockstep with countries’ economic growth and changes in investment spending.
- Paul J. Burke
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Comment |
Define limits for temperature overshoot targets
Temperature overshoot scenarios that make the 1.5 °C climate target feasible could turn into sources of political flexibility. Climate scientists must provide clear constraints on overshoot magnitude, duration and timing, to ensure accountability.
- Oliver Geden
- & Andreas Löschel
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News & Views |
Science versus political realities
Debate rages over which water bodies in the US are protected under federal law by the Clean Water Act. Science shows that isolated wetlands and headwater systems provide essential downstream services, but convincing politicians is another matter.
- Mark A. Ryan
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Perspective |
Enhancing protection for vulnerable waters
Enhanced protection is needed for freshwater bodies in the United States — in particular impermanent streams and wetlands outside floodplains — according to an assessment of their value and vulnerability.
- Irena F. Creed
- , Charles R. Lane
- & Lora Smith
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Commentary |
Acts of God, human influence and litigation
Developments in attribution science are improving our ability to detect human influence on extreme weather events. By implication, the legal duties of government, business and others to manage foreseeable harms are broadening, and may lead to more climate change litigation.
- Sophie Marjanac
- , Lindene Patton
- & James Thornton
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Editorial |
Progress from catastrophe
Natural disasters can devastate local communities. However, these rare events also often trigger new ways of thinking, and provide a treasure trove of data that must be used to reduce vulnerability.
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Perspective |
National baselines for the Sustainable Development Goals assessed in the SDG Index and Dashboards
The Sustainable Development Goals map out a broad spectrum of objectives. Analytical tools in form of the Index and Dashboards provide a starting point to set national baselines, and allow comparison of the SDGs with other indices of well-being.
- Guido Schmidt-Traub
- , Christian Kroll
- & Jeffrey D. Sachs
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Editorial |
Trust we must
Asking people to trust scientists is not enough in times of doubt. Scientists must trust the people too: to make decisions for themselves, once they know the best available evidence.
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News & Views |
Chronicling a medieval eruption
The climatic response to the eruption of the Samalas Volcano in 1257 has been elusive. Medieval archives tell of a spatially variable reaction, with Europe and Japan experiencing severe cold compared to relative warmth in North America.
- Francis Ludlow
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Article |
Climate response to the Samalas volcanic eruption in 1257 revealed by proxy records
The climatic response to the 1257 Samalas eruption is unclear. Analyses of proxy data and medieval archives suggest that the eruption triggered some of the coldest summers of the past millennium, but only in some Northern Hemisphere regions.
- Sébastien Guillet
- , Christophe Corona
- & Clive Oppenheimer
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Commentary |
No fudging on geoengineering
The Intergovernmental Panel on Climate Change is preparing a report on keeping global warming below 1.5 °C. How the panel chooses to deal with the option of solar geoengineering will test the integrity of scientific climate policy advice.
- Andy Parker
- & Oliver Geden
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Commentary |
Pathways to zero emissions
To keep global warming below 2 °C, countries need long-term strategies for low-emission development. Without these, immediate emissions reductions may lock-in high-emitting infrastructure, hamper collaboration and make climate goals unachievable.
- Jeffrey D. Sachs
- , Guido Schmidt-Traub
- & Jim Williams
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Letter |
Gender differences in recommendation letters for postdoctoral fellowships in geoscience
Gender disparities in science are well documented. An analysis of 1,224 recommendation letters from 54 countries for geoscience postdoctoral fellowships reveals that women are half as likely to receive an excellent letter as men.
- Kuheli Dutt
- , Danielle L. Pfaff
- & Caryn J. Block
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Editorial |
The metals disconnect
Economic development in a sustainable fashion is metals-intensive. If we cannot afford to ban mining, regulation must be more effective.
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Correspondence |
Ocean planning in a changing climate
- Catarina Frazão Santos
- , Tundi Agardy
- & Rui Rosa
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Letter |
Biomass turnover time in terrestrial ecosystems halved by land use
Biomass turnover time is a key parameter in the global carbon cycle. An analysis of global land-use data reveals that biomass turnover is almost twice as fast when the land is used to enhance terrestrial ecosystem services.
- Karl-Heinz Erb
- , Tamara Fetzel
- & Helmut Haberl
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Commentary |
An actionable climate target
The Paris Agreement introduced three mitigation targets. In the future, the main focus should not be on temperature targets such as 2 or 1.5 °C, but on the target with the greatest potential to effectively guide policy: net zero emissions.
- Oliver Geden
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Commentary |
Cities lead on climate change
The need to mitigate climate change opens up a key role for cities. Bristol's year as a Green Capital led to great strides forward, but it also revealed that a creative and determined partnership across cultural divides will be necessary.
- Richard D. Pancost
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Editorial |
An impossible task?
The Paris Agreement on climate change has shifted international focus to more stringent mitigation, and asked the scientific community to work out what that means on a tight timeline. The challenge is steep, but well worth a go.
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Commentary |
Geosciences after Paris
The adoption of the Paris Agreement is a historic milestone for the global response to the threat of climate change. Scientists are now being challenged to investigate a 1.5 °C world — which will require an accelerated effort from the geoscience community.
- Joeri Rogelj
- & Reto Knutti
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News & Views |
Cooling and societal change
The rise and fall of civilizations over the past two millennia was set against a backdrop of climate change. High-resolution climate records evince a link between societal change and a period of cooling in the sixth and seventh centuries.
- John Haldon
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Letter |
Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD
Societal upheaval occurred across Eurasia in the sixth and seventh centuries. Tree-ring reconstructions suggest a period of pronounced cooling during this time associated with several volcanic eruptions.
- Ulf Büntgen
- , Vladimir S. Myglan
- & Alexander V. Kirdyanov
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News & Views |
Your feet's too big
Humanity's nitrogen pollution footprint has increased by a factor of six since the 1930s. A global analysis reveals that a quarter of this nitrogen pollution is associated with the production of internationally traded products.
- James N. Galloway
- & Allison M. Leach
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News & Views |
Unattributed hurricane damage
In the United States, hurricanes have been causing more and more economic damage. A reanalysis of the disaster database using a statistical method that accounts for improvements in resilience opens the possibility that climate change has played a role.
- Stéphane Hallegatte
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Commentary |
Duality in climate science
Delivery of palatable 2 °C mitigation scenarios depends on speculative negative emissions or changing the past. Scientists must make their assumptions transparent and defensible, however politically uncomfortable the conclusions.
- Kevin Anderson
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Commentary |
Balancing green and grain trade
Since 1999, China's Grain for Green project has greatly increased the vegetation cover on the Loess Plateau. Now that erosion levels have returned to historic values, vegetation should be maintained but not expanded further as planned.
- Yiping Chen
- , Kaibo Wang
- & Xinhua He
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News & Views |
Attribution of extreme weather
Anthropogenic climate change alters the risk of some extreme weather events. High-resolution computer simulations suggest that Black Sea warming made the devastating 2012 Krymsk flood possible — a virtually impossible event just 30 years ago.
- Friederike E. L. Otto
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Commentary |
The catastrophic nature of humans
Natural landscapes are shaped by frequent moderate-sized events, except for the rare catastrophe. Human modifications to the Earth's surface are, compared with natural processes, increasingly catastrophic.
- Richard Guthrie
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News & Views |
Hiatus heat in the Indian Ocean
Global surface warming has slowed since the start of the twenty-first century, while Pacific heat uptake was enhanced. Analyses of ocean heat content suggest that the warm water was transferred to the Indian Ocean, through the Indonesian straits.
- Jérôme Vialard
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News & Views |
Climate or humans?
Analyses of ice-core carbon isotopes show that variations in atmospheric CO2 levels during the past millennium are controlled by changes in land reservoirs. But whether climate variations or human activity were mainly responsible is uncertain.
- Jed O. Kaplan