Blar i CICERO Research Archive på forfatter "Fuglestvedt, Jan S."
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Reply to: Uncertainty in near-term temperature evolution must not obscure assessments of climate mitigation benefits
Samset, Bjørn Hallvard; Fuglestvedt, Jan S.; Lund, Marianne Tronstad (Peer reviewed; Journal article, 2022)In response to our recent paper1 (hereafter SFL20) concerning the relation between natural variability in the climate system and the time to detect a response to emissions mitigation, Lanson et al.2 (hereafter L22) call ... -
Responses in tropospheric chemistry to changes in UV fluxes, temperatures and water vapour densities
Fuglestvedt, Jan S.; Jonson, J. E.; Wang, Wei-Chyung; Isaksen, Ivar S. A. (CICERO Report;1994:05, Research report, 1994)A two-dimensional chemistry/transport model of the global troposphere is used to study the chemical response to i) increased UV-radiation from stratospheric ozone depletion and ii) increased temperatures and water vapour ... -
Responses in tropospheric O3, OH and CH4 to changed emissions of important trace gases
Fuglestvedt, Jan S.; Berntsen, Terje Koren; Isaksen, Ivar S. A. (CICERO Report;1993:04, Research report, 1993)A two-dimensional (altitude vs. latitude) photochemical/transport model of the global troposphere is applied to study the effects of changed emissions of NOx, CH4, CO2 and NMHC on the levels of O3, OH and CH4. On a mass ... -
Stable climate metrics for emissions of short and long-lived species—combining steps and pulses
Collins, William J.; Frame, David J.; Fuglestvedt, Jan S.; Shine, Keith Peter (Journal article; Peer reviewed, 2020)Multi-gas climate agreements rely on a methodology (widely referred to as 'metrics') to place emissions of different gases on a CO2-equivalent scale. There has been an ongoing debate on the extent to which existing metrics ... -
Steady global surface warming from 1973 to 2022 but increased warming rate after 1990
Samset, Bjørn Hallvard; Zhou, C.; Fuglestvedt, Jan S.; Lund, Marianne Tronstad; Marotzke, J.; Zelinka, M.D. (Peer reviewed; Journal article, 2023)The change in global mean surface temperature is a crucial and broadly used indicator of the evolution of climate change. Any decadal scale changes in warming rate are however obfuscated by internal variability. Here we ...