J. S. Daniel
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View article: Assessing alternative methane emission metrics conducive to quantifying global warming and setting near-term climate goals
Assessing alternative methane emission metrics conducive to quantifying global warming and setting near-term climate goals Open
Climate metrics, like Global Warming Potential (GWP), are frequently relied on to relate emissions of greenhouse gasses (GHGs) to globally averaged temperature change. However, most metrics struggle to accurately represent temperature chan…
View article: The return to 1980 stratospheric halogen levels: a moving target in ozone assessments from 2006 to 2022
The return to 1980 stratospheric halogen levels: a moving target in ozone assessments from 2006 to 2022 Open
The international scientific assessment of ozone depletion is prepared every 4 years to support decisions made by the parties to the Montreal Protocol. In each assessment an outlook of ozone recovery time is provided. The year when equival…
View article: Comment on egusphere-2024-1289
Comment on egusphere-2024-1289 Open
Abstract. The international scientific assessment of ozone depletion is prepared every four years to support decisions made by the Parties to the Montreal Protocol. In each assessment an outlook of ozone recovery time is provided. The year…
View article: A decrease in radiative forcing and equivalent effective chlorine from hydrochlorofluorocarbons
A decrease in radiative forcing and equivalent effective chlorine from hydrochlorofluorocarbons Open
The Montreal Protocol and its successive amendments have been successful in curbing emissions of ozone-depleting substances and potent greenhouse gases via production/consumption controls. Here we show that the radiative forcing and equiva…
View article: A perspective on the next generation of Earth system model scenarios: towards representative emission pathways (REPs)
A perspective on the next generation of Earth system model scenarios: towards representative emission pathways (REPs) Open
In every Intergovernmental Panel on Climate Change (IPCC) Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group reports and special reports, as well as their respect…
View article: The return to 1980 stratospheric halogen levels: A moving target in ozone assessments from 2006 to 2022
The return to 1980 stratospheric halogen levels: A moving target in ozone assessments from 2006 to 2022 Open
The international scientific assessment of ozone depletion is prepared every four years to support decisions made by the Parties to the Montreal Protocol. In each assessment an outlook of ozone recovery time is provided. The year when equi…
View article: Reply on CC3
Reply on CC3 Open
Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is …
View article: Reply on CC1
Reply on CC1 Open
Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is …
View article: A value-of-information lens is needed
A value-of-information lens is needed Open
Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is …
View article: Reply on CC1
Reply on CC1 Open
Abstract. In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is …
View article: A perspective on the next generation of Earth system model scenarios: towards representative emission pathways (REPs)
A perspective on the next generation of Earth system model scenarios: towards representative emission pathways (REPs) Open
In every IPCC Assessment cycle, a multitude of scenarios are assessed, with different scope and emphasis throughout the various Working Group and Special Reports and their respective chapters. Within the reports, the ambition is to integra…
View article: Bayesian assessment of chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC) and halon banks suggest large reservoirs still present in old equipment
Bayesian assessment of chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC) and halon banks suggest large reservoirs still present in old equipment Open
Halocarbons contained in equipment such as air conditioners, fire extinguishers, and foams continue to be emitted after production has ceased. These “banks” within equipment and applications are thus potential sources of future emissions, …
View article: Projections of hydrofluorocarbon (HFC) emissions and the resulting global warming based on recent trends in observed abundances and current policies
Projections of hydrofluorocarbon (HFC) emissions and the resulting global warming based on recent trends in observed abundances and current policies Open
The emissions of hydrofluorocarbons (HFCs) have increased significantly in the past 2 decades, primarily as a result of the phaseout of ozone-depleting substances under the Montreal Protocol and the use of HFCs as their replacements. In 20…
View article: Comment on acp-2022-240
Comment on acp-2022-240 Open
Halocarbons contained in equipment such as air conditioners, fire extinguishers, and foams continue to be emitted after production has ceased. These ‘banks’ within equipment and applications are thus potential sources of future emissions, …
View article: Comment on acp-2022-240
Comment on acp-2022-240 Open
Abstract. Halocarbons contained in equipment such as air conditioners, fire extinguishers, and foams continue to be emitted after production has ceased. These ‘banks’ within equipment and applications are thus potential sources of future e…
View article: Bayesian assessment of chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC) and halon banks suggest large reservoirs still present in old equipment
Bayesian assessment of chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC) and halon banks suggest large reservoirs still present in old equipment Open
Halocarbons contained in equipment such as air conditioners, fire extinguishers, and foams continue to be emitted after production has ceased. These ‘banks’ within equipment and applications are thus potential sources of future emissions, …
View article: Comment on acp-2021-1070
Comment on acp-2021-1070 Open
Abstract. The emissions of hydrofluorocarbons (HFCs) have increased significantly in the past 2Â decades, primarily as a result of the phaseout of ozone-depleting substances under the Montreal Protocol and the use of HFCs as their replacem…
View article: Comment on acp-2021-1070
Comment on acp-2021-1070 Open
Abstract. The emissions of hydrofluorocarbons (HFCs) have increased significantly in the past 2 decades, primarily as a result of the phaseout of ozone-depleting substances under the Montreal Protocol and the use of HFCs as their replaceme…
View article: Projections of hydrofluorocarbon (HFC) emissions and the resulting global warming based on recent trends in observed abundances and current policies
Projections of hydrofluorocarbon (HFC) emissions and the resulting global warming based on recent trends in observed abundances and current policies Open
The emissions of hydrofluorocarbons (HFCs) have increased significantly in the past two decades, primarily as a result of the phaseout of ozone depleting substances under the Montreal Protocol and the use of HFCs as their replacements. Pro…
View article: The shared socio-economic pathway (SSP) greenhouse gas concentrations and their extensions to 2500
The shared socio-economic pathway (SSP) greenhouse gas concentrations and their extensions to 2500 Open
Anthropogenic increases in atmospheric greenhouse gas concentrations are the main driver of current and future climate change. The integrated assessment community has quantified anthropogenic emissions for the shared socio-economic pathway…
View article: Quantifying contributions of chlorofluorocarbon banks to emissions and impacts on the ozone layer and climate
Quantifying contributions of chlorofluorocarbon banks to emissions and impacts on the ozone layer and climate Open
Chlorofluorocarbon (CFC) banks from uses such as air conditioners or foams can be emitted after global production stops. Recent reports of unexpected emissions of CFC-11 raise the need to better quantify releases from these banks, and asso…
View article: The Impact of Continuing CFC‐11 Emissions on Stratospheric Ozone
The Impact of Continuing CFC‐11 Emissions on Stratospheric Ozone Open
Trichlorofluoromethane (CFC‐11, CFCl 3 ) is a major anthropogenic ozone‐depleting substance and greenhouse gas, and its production and consumption are controlled under the Montreal Protocol. However, recent studies show that CFC‐11 emissio…
View article: Delay in recovery of the Antarctic ozone hole from unexpected CFC-11 emissions.
Delay in recovery of the Antarctic ozone hole from unexpected CFC-11 emissions. Open
The Antarctic ozone hole is decreasing in size but this recovery will be affected by atmospheric variability and any unexpected changes in chlorinated source gas emissions. Here, using model simulations, we show that the ozone hole will la…
View article: The SSP greenhouse gas concentrations and their extensions to 2500
The SSP greenhouse gas concentrations and their extensions to 2500 Open
Anthropogenic increases of atmospheric greenhouse gas concentrations are the main driver of current and future climate change. The Integrated Assessment community quantified anthropogenic emissions for the Shared Socioeconomic Pathways (SS…