Kirsten Zickfeld
Biographic Data
| ID | 6819255 |
|---|---|
| NAME | Kirsten Zickfeld |
| GIVEN NAMES | Kirsten |
| FAMILY NAME | Zickfeld |
| SIGNATURE | ZICKFELD K |
| AFFILIATIONS | Simon Fraser University |
| ORCID | 0000-0001-8866-6541 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
The implications of overshooting 1.5 °C on Earth system tipping elements—a review
Due to insufficient emission reductions in recent years, it is increasingly likely that global warming will exceed the 1.5 °C temperature limit in the late 2020s or 2030s. As a result, several Earth system tipping elements could, at least temporarily, have their tipping points surpassed, posing risks of large-scale and profound structural change. Tipping does not always occur immediately upon crossing such a critical threshold. If the length of t…
Asymmetry in the climate–carbon cycle response to positive and negative CO2 emissions
The influence of non-CO 2 forcings on cumulative carbon emissions budgets
Carbon budgets provide a useful tool for policymakers to help meet the global climate targets, as they specify total allowable carbon emissions consistent with limiting warming to a given temperature threshold. Non-CO2 forcings have a net warming effect in the Representative Concentration Pathways (RCP) scenarios, leading to reductions in remaining carbon budgets based on CO2 forcing alone. Carbon budgets consistent with limiting warming to below…
Focus on cumulative emissions, global carbon budgets and the implications for climate mitigation targets
The Environmental Research Letters focus issue on 'Cumulative Emissions, Global Carbon Budgets and the Implications for Climate Mitigation Targets' was launched in 2015 to highlight the emerging science of the climate response to cumulative emissions, and how this can inform efforts to decrease emissions fast enough to avoid dangerous climate impacts. The 22 research articles published represent a fantastic snapshot of the state-or-the-art in thi…
What determines the warming commitment after cessation of CO 2 emissions
Previous studies have shown that global mean surface air temperature remains elevated after cessation of CO 2 emissions. However, studies differ in whether the temperature continues to increase, slowly decreases, or remains constant after cessation of emissions. An understanding of this committed warming is of importance because it has implication for the estimation of carbon budgets compatible with temperature targets. Here, we investigate the e…
On the proportionality between global temperature change and cumulative CO 2 emissions during periods of net negative CO 2 emissions
Recent research has demonstrated that global mean surface air warming is approximately proportional to cumulative CO2 emissions. This proportional relationship has received considerable attention, as it allows one to calculate the cumulative CO2 emissions ('carbon budget') compatible with temperature targets and is a useful measure for model inter-comparison. Here we use an Earth system model to explore whether this relationship persists during p…
Sensitivity of carbon budgets to permafrost carbon feedbacks and non-CO 2 forcings
The bar representing the carbon budget for the 2 C temperature change target for the model configuration with non-CO 2 forcings from figure 4(a) was mislabelled. The bar was mistakenly labelled with the value for RCP 8.5 instead of RCP 6.0. The correct value is 810 Pg C. The corrected figure follows
The effectiveness of net negative carbon dioxide emissions in reversing anthropogenic climate change
Artificial removal of CO _2 from the atmosphere (also referred to as negative emissions) has been proposed as a means to restore the climate system to a desirable state, should the impacts of climate change become ‘dangerous’. Here we explore whether negative emissions are indeed effective in reversing climate change on human timescales, given the potentially counteracting effect of natural carbon sinks and the inertia of the climate system. We d…
The time lag between a carbon dioxide emission and maximum warming increases with the size of the emission
In a recent letter, Ricke and Caldeira (2014 Environ. Res. Lett. 9 124002 ) estimated that the timing between an emission and the maximum temperature response is a decade on average. In their analysis, they took into account uncertainties about the carbon cycle, the rate of ocean heat uptake and the climate sensitivity but did not consider one important uncertainty: the size of the emission. Using simulations with an Earth System Model we show th…
Carbon Dioxide Emission Pathways Avoiding Dangerous Ocean Impacts
Anthropogenic emissions of greenhouse gases could lead to undesirable effects on oceans in coming centuries. Drawing on recommendations published by the German Advisory Council on Global Change, levels of unacceptable global marine change (so-called guardrails) are defined in terms of global mean temperature, sea level rise, and ocean acidification. A global-mean climate model [the Aggregated Carbon Cycle, Atmospheric Chemistry and Climate Model …
The proportionality of global warming to cumulative carbon emissions
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The proportionality of global warming to cumulative carbon emissions
Carbon Dioxide Emission Pathways Avoiding Dangerous Ocean Impacts
Anthropogenic emissions of greenhouse gases could lead to undesirable effects on oceans in coming centuries. Drawing on recommendations published by the German Advisory Council on Global Change, levels of unacceptable global marine change (so-called guardrails) are defined in terms of global mean temperature, sea level rise, and ocean acidification. A global-mean climate model [the Aggregated Carbon Cycle, Atmospheric Chemistry and Climate Model …
Sensitivity of carbon budgets to permafrost carbon feedbacks and non-CO 2 forcings
The bar representing the carbon budget for the 2 C temperature change target for the model configuration with non-CO 2 forcings from figure 4(a) was mislabelled. The bar was mistakenly labelled with the value for RCP 8.5 instead of RCP 6.0. The correct value is 810 Pg C. The corrected figure follows
The effectiveness of net negative carbon dioxide emissions in reversing anthropogenic climate change
Artificial removal of CO _2 from the atmosphere (also referred to as negative emissions) has been proposed as a means to restore the climate system to a desirable state, should the impacts of climate change become ‘dangerous’. Here we explore whether negative emissions are indeed effective in reversing climate change on human timescales, given the potentially counteracting effect of natural carbon sinks and the inertia of the climate system. We d…
The time lag between a carbon dioxide emission and maximum warming increases with the size of the emission
In a recent letter, Ricke and Caldeira (2014 Environ. Res. Lett. 9 124002 ) estimated that the timing between an emission and the maximum temperature response is a decade on average. In their analysis, they took into account uncertainties about the carbon cycle, the rate of ocean heat uptake and the climate sensitivity but did not consider one important uncertainty: the size of the emission. Using simulations with an Earth System Model we show th…
On the proportionality between global temperature change and cumulative CO 2 emissions during periods of net negative CO 2 emissions
Recent research has demonstrated that global mean surface air warming is approximately proportional to cumulative CO2 emissions. This proportional relationship has received considerable attention, as it allows one to calculate the cumulative CO2 emissions ('carbon budget') compatible with temperature targets and is a useful measure for model inter-comparison. Here we use an Earth system model to explore whether this relationship persists during p…
Focus on cumulative emissions, global carbon budgets and the implications for climate mitigation targets
The Environmental Research Letters focus issue on 'Cumulative Emissions, Global Carbon Budgets and the Implications for Climate Mitigation Targets' was launched in 2015 to highlight the emerging science of the climate response to cumulative emissions, and how this can inform efforts to decrease emissions fast enough to avoid dangerous climate impacts. The 22 research articles published represent a fantastic snapshot of the state-or-the-art in thi…
What determines the warming commitment after cessation of CO 2 emissions
Previous studies have shown that global mean surface air temperature remains elevated after cessation of CO 2 emissions. However, studies differ in whether the temperature continues to increase, slowly decreases, or remains constant after cessation of emissions. An understanding of this committed warming is of importance because it has implication for the estimation of carbon budgets compatible with temperature targets. Here, we investigate the e…
The influence of non-CO 2 forcings on cumulative carbon emissions budgets
Carbon budgets provide a useful tool for policymakers to help meet the global climate targets, as they specify total allowable carbon emissions consistent with limiting warming to a given temperature threshold. Non-CO2 forcings have a net warming effect in the Representative Concentration Pathways (RCP) scenarios, leading to reductions in remaining carbon budgets based on CO2 forcing alone. Carbon budgets consistent with limiting warming to below…
Asymmetry in the climate–carbon cycle response to positive and negative CO2 emissions
The implications of overshooting 1.5 °C on Earth system tipping elements—a review
Due to insufficient emission reductions in recent years, it is increasingly likely that global warming will exceed the 1.5 °C temperature limit in the late 2020s or 2030s. As a result, several Earth system tipping elements could, at least temporarily, have their tipping points surpassed, posing risks of large-scale and profound structural change. Tipping does not always occur immediately upon crossing such a critical threshold. If the length of t…
Climate change (11 works) · Environmental Science (10 works) · Greenhouse gas (10 works) · Atmospheric and Environmental Gas Dynamics (9 works) · Atmospheric sciences (9 works) · Climate Change Policy and Economics (8 works) · Climatology (8 works) · Global warming (8 works) · Carbon cycle (6 works) · Carbon dioxide (6 works)