Results 101 to 110 of about 101,389 (308)

Sensitivity of near‐surface marine winds and wind stress in coastal Antarctica to regional atmospheric model configuration

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Marine winds near coastal Antarctica are important for sea‐ice variability and ocean circulation. We test the sensitivity of simulated winds to varying uncertain aspects of the atmospheric model configuration. Winds (each configuration a coloured solid line in the figure) are sensitive to model physics, and notably we find that wind stress over a ...
Thomas Caton Harrison, Adrian Lock, Thomas J. Bracegirdle, John C. King, Hua Lu, Alessandro Silvano   +5 more
wiley   +1 more source

Assessment of ICESat‐2 Ice Sheet Surface Heights, Based on Comparisons Over the Interior of the Antarctic Ice Sheet

Geophysical Research Letters, 2019
We collected kinematic Global Navigation Satellite Systems (GNSS) surface height data, on a 750‐km ground‐based traverse of the flat interior of the Antarctic ice sheet, for comparison with Ice, Cloud, and Land Elevation Satellite‐2 (ICESat‐2) surface ...
K. Brunt, Thomas A. Neumann, Ben Smith
semanticscholar   +1 more source

Impact of ice sheet meltwater fluxes on the climate evolution at the onset of the Last Interglacial [PDF]

Climate of the Past, 2016
Large climate perturbations occurred during the transition between the penultimate glacial period and the Last Interglacial (Termination II), when the ice sheets retreated from their glacial configuration.
H. Goelzer, P. Huybrechts, M.-F. Loutre, T. Fichefet   +3 more
doaj   +1 more source

Sea-level constraints on the amplitude and source distribution of Meltwater Pulse 1A. [PDF]

, 2015
During the last deglaciation, sea levels rose as ice sheets retreated. This climate transition was punctuated by periods of more intense melting; the largest and most rapid of these—Meltwater Pulse 1A—occurred about 14,500 years ago, with rates of sea ...
AC Neumann, AE Carlson, AE Carlson, AJ Weaver, AM Dziewonski, E Bard, GA Milne, Glenn A. Milne, Ian Shennan, JA Clark, Jean Liu, JX Mitrovica, JX Mitrovica, JX Mitrovica, JX Mitrovica, K Lambeck, K Lambeck, L Menviel, L Tarasov, LJ Gregoire, MJ Bentley, MJR Simpson, N Gomez, N Gomez, NR Golledge, P Blanchon, P Deschamps, Peter U. Clark, PJ Reimer, PL Whitehouse, PU Clark, R Kendall, R Sabadini, RD Briggs, RG Fairbanks, RJ Stouffer, Robert E. Kopp, SE Bassett, T Hanebuth, WE Farrell, WR Peltier, WR Peltier   +41 more
core   +2 more sources

What can lithics tell us about hominin technology's ‘primordial soup’? An origin of stone knapping via the emulation of Mother Nature

Archaeometry, EarlyView.
Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren, Stephen J. Lycett, Michelle R. Bebber, Alastair Key, Briggs Buchanan, Emma Finestone, Joseph Benson, Rebecca Biermann Gürbüz, Adela Cebeiro, Roman Garba, Anne Grunow, C. Owen Lovejoy, Danielle MacDonald, Erica Maletic, G. Logan Miller, Joseph D. Ortiz, Jonathan Paige, Justin Pargeter, Tomos Proffitt, Mary Ann Raghanti, Teal Riley, Jeffrey I. Rose, David M. Singer, Robert S. Walker   +23 more
wiley   +1 more source

Last Interglacial subsurface warming on the Antarctic shelf triggered by reduced deep-ocean convection

Communications Earth & Environment
The Antarctic ice-sheet could have contributed 3 to 5 m sea-level equivalent to the Last Interglacial sea-level highstand. Such an Antarctic ice-mass loss compared to pre-industrial requires a subsurface warming on the Antarctic shelf of ~ 3 °C according
Nicholas King-Hei Yeung, Laurie Menviel, Katrin J. Meissner, Dipayan Choudhury, Tilo Ziehn, Matthew A. Chamberlain   +5 more
doaj   +1 more source

Antarctic ice sheet thickness estimation using the horizontal-to-vertical spectral ratio method with single-station seismic ambient noise [PDF]

The Cryosphere, 2018
We report on a successful application of the horizontal-to-vertical spectral ratio (H / V) method, generally used to investigate the subsurface velocity structures of the shallow crust, to estimate the Antarctic ice sheet thickness for the first time.
P. Yan, Z. Li, F. Li, F. Li, Y. Yang, W. Hao, F. Bao   +6 more
doaj   +1 more source

Unilateral Action on Climate Change and the Moral Obligation to Take Leadership

Journal of Social Philosophy, EarlyView.
ABSTRACT We claim that a moral obligation to take climate leadership by means of unilateral mitigation depends on the existence of a plausible follow‐the‐leader mechanism whereby unilateral mitigation by some increases the probability of sufficient mitigation by others to avert catastrophic climate impacts.
Daniel Steel, Rachel Cripps, C. Tyler DesRoches, Paul Bartha, Kian Mintz‐Woo   +4 more
wiley   +1 more source

An Evaluation of Surface Climatology in State-of-the-Art Reanalyses over the Antarctic Ice Sheet

Journal of Climate, 2019
In this study, we evaluate output of near-surface atmospheric variables over the Antarctic Ice Sheet from four reanalyses: the new European Centre for Medium-Range Weather Forecasts ERA-5 and its predecessor ERA-Interim, the Climate Forecast System ...
Alexandra Gossart, Samuel Helsen, J. Lenaerts, S. V. Broucke, N. Lipzig, Niels Souverijns   +5 more
semanticscholar   +1 more source

Coupling framework (1.0) for the Úa (2023b) ice sheet model and the FESOM-1.4 z-coordinate ocean model in an Antarctic domain [PDF]

Geoscientific Model Development
The rate at which the Antarctic ice sheet loses mass is to a large degree controlled by ice–ocean interactions underneath small ice shelves, with the most sensitive regions concentrated in even smaller areas near grounding lines and local pinning points.
O. Richter, O. Richter, O. Richter, R. Timmermann, G. H. Gudmundsson, J. De Rydt   +5 more
doaj   +1 more source