Browsing NORCE vitenarkiv by Author "Langebroek, Petra"
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A modeling study of the tripole pattern of East China precipitation over the past 425 ka
Dai, Gaowen; Zhang, Zhongshi; Otterå, Odd Helge; Langebroek, Petra; Yan, Qing; Zhang, Ran (Peer reviewed; Journal article, 2021)The traditional paleoclimatological view suggests that monsoonal China was overall wetter when the East Asian summer monsoon (EASM) was strong. However, this view is at odds with the understanding of modern climate, which ... -
DeepMIP: model intercomparison of early Eocene climatic optimum (EECO) large-scale climate features and comparison with proxy data
Lunt, Daniel J.; Bragg, F.; Chan, Wing-Lee; Hutchinson, D.K.; Ladant, Jean-Baptiste; Morozova, Polina A.; Niezgodzki, I.; Steinig, S.; Zhang, Zhongshi; Zhu, J; Abe-Ouchi, Ayako; Anagnostou, Eleni; de Boer, A.M.; Coxall, H.K.; Donnadieu, Y.; Foster, G.; Inglis, Gordon N.; Knorr, Gregor; Langebroek, Petra; Lear, Caroline H.; Lohmann, G.; Poulsen, C.J.; Sepulchre, Pierre; Jones, Tom Dunkley; Hollis, Chris J.; Huber, M.; Otto-Bliesner, Bette (Peer reviewed; Journal article, 2021)We present results from an ensemble of eight climate models, each of which has carried out simulations of the early Eocene climate optimum (EECO, ∼ 50 million years ago). These simulations have been carried out in the ... -
Eemian Greenland ice sheet simulated with a higher-order model shows strong sensitivity to surface mass balance forcing
Plach, Andreas; Nisancioglu, Kerim Hestnes; Langebroek, Petra; Born, Andreas; Le clec'h, Sebastien (Peer reviewed; Journal article, 2019)The Greenland ice sheet contributes increasingly to global sea level rise. Its history during past warm intervals is a valuable reference for future sea level projections. We present ice sheet simulations for the Eemian ... -
Hydrological impact of Middle Miocene Antarctic ice-free areas coupled to deep ocean temperatures
Bradshaw, Catherine; Langebroek, Petra; Lear, Caroline H.; Lunt, Daniel J.; Coxall, Helen; Sosdian, Sindia M.; De Boer, Agatha (Peer reviewed; Journal article, 2021)Oxygen isotopes from ocean sediments (δ18O) used to reconstruct past continental ice volumes additionally record deep water temperatures (DWTs). Traditionally, these are assumed to be coupled (ice-volume changes cause DWT ... -
Impact of runoff temporal distribution on ice dynamics
Fleurian, Basile de; Davy, Richard; Langebroek, Petra (Peer reviewed; Journal article, 2022)Record highs of meltwater production at the surface of the Greenland ice sheet have been recorded with a high recurrence over the last decades. Those melt seasons with longer durations, larger intensities, or with both ... -
Southern Ocean sea surface temperature synthesis: Part 1. Evaluation of temperature proxies at glacial-interglacial time scales
Chandler, David Matthew; Langebroek, Petra (Peer reviewed; Journal article, 2021)Quaternary interglacial climates are often used as analogues for how the Antarctic Ice Sheet will respond to future climate warming. Southern Ocean marine sediments provide an important paleoclimate archive in this respect. ... -
Southern Ocean sea surface temperature synthesis: Part 2. Penultimate glacial and last interglacial
Chandler, David Matthew; Langebroek, Petra (Journal article; Peer reviewed, 2021)The last interglacial (LIG: ∼130 to 115 thousand years before present) is often used as an analogue for near-future climate warming. Antarctic Ice Sheet response to LIG warming is of particular interest, because of its ... -
The stability of present-day Antarctic grounding lines - Part 2: Onset of irreversible retreat of Amundsen Sea glaciers under current climate on centennial timescales cannot be excluded
Reese, Ronja; Garbe, Julius; Hill, Emily; Urruty, Benoit; Naughten, Kaitlin; Gagliardini, Olivier; Durand, Gael; Gillet-Chaulet, Fabien; Gudmundsson, G. Hilmar; Chandler, David Matthew; Langebroek, Petra; Winkelmann, Ricarda (Peer reviewed; Journal article, 2023)Observations of ocean-driven grounding-line retreat in the Amundsen Sea Embayment in Antarctica raise the question of an imminent collapse of the West Antarctic Ice Sheet. Here we analyse the committed evolution of Antarctic ... -
The stability of present-day Antarctic grounding lines-Part 1: No indication of marine ice sheet instability in the current geometry
Hill, Emily A.; Urruty, Benoit; Reese, Ronja; Garbe, Julius; Gagliardini, Olivier; Durand, Gael; Gillet-Chaulet, Fabien; Gudmundsson, G. Hilmar; Winkelmann, Ricarda; Chekki, Mondher; Chandler, David Matthew; Langebroek, Petra (Peer reviewed; Journal article, 2023)Theoretical and numerical work has shown that under certain circumstances grounding lines of marine-type ice sheets can enter phases of irreversible advance and retreat driven by the marine ice sheet instability (MISI). ...