Results 111 to 120 of about 197,433 (331)

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse [PDF]

, 2016
Several studies have suggested that sea-level rise during the last interglacial implies retreat of the West Antarctic Ice Sheet (WAIS). The prevalent hypothesis is that the retreat coincided with the peak Antarctic temperature and stable water isotope ...
A Dutton, A Dutton, B Stenni, BL Otto-Bliesner, C Bianchi, C Deser, D Noone, DJ Lunt, E Capron, EJ Steig, EW Wolff, F Parrenin, G Marino, GM Ljung, H Fischer, I Joughin, I Simmonds, J Jouzel, J Tindall, J Turner, JC Tindall, JL Bamber, JR Petit, K Kawamura, K Pol, KJE Walsh, KM Grant, LC Sime, LC Sime, MD Holloway, MJ O'Leary, P Bakker, PB Holden, RE Kopp, RE Kopp, RM Gladstone, S Jacobs, T Kohyama, T Stocker, TJ Bracegirdle, V Masson-Delmotte, V Zunz, WM Connolley, X Liu   +43 more
core   +4 more sources

Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates

Integrative Zoology, EarlyView.
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez, Santiago Hernández Del Pino, Esperanza Cerdeño, Manuel Hernández Fernández, Laura Domingo   +4 more
wiley   +1 more source

The long-term sea-level commitment from Antarctica [PDF]

The Cryosphere
The evolution of the Antarctic Ice Sheet is of vital importance given the coastal and societal implications of ice loss, with a potential to raise sea level by up to 58 m if it melts entirely.
A. K. Klose, A. K. Klose, V. Coulon, F. Pattyn, R. Winkelmann, R. Winkelmann, R. Winkelmann   +6 more
doaj   +1 more source

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

Anomalous peak in Antarctic sea-ice area, winter 1998, coincident with ENSO [PDF]

, 2001
The results of an updated satellite analysis of hemispheric and regional Antarctic sea-ice cover are presented based on October 1987-September I999 Special Sensor Microwave/Imager (SSM/I) data.
Bell, Bjørgo, Bromwich, Cavalieri, Comiso, De la Mare, Edward Hanna, Federov, Hanna, Hanna, Hanna, Johannessen, Parkinson, Simmons, Slingo, Smith, Stammerjohn, Timmermann, Urban, Van den Broeke, Vinnikov, Watkins, White, Wu, Yuan   +24 more
core   +1 more source

Correction to: Societal importance of Antarctic negative feedbacks on climate change: blue carbon gains from sea ice, ice shelf and glacier losses [PDF]

, 2021
David K. A. Barnes, Chester J. Sands, Maria Lund Paulsen, Bernabé Moreno, Camille Moreau, Christoph Held, Rachel Downey, Narissa Bax, Jonathan S. Stark, Nadescha Zwerschke   +9 more
openalex   +1 more source

Flow‐pattern evolution of the Scandinavian Ice Sheet indicated by the subglacial lineation record over Norway, Sweden and Finland

Boreas, EarlyView.
We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher, Anna L. C. Hughes, Helen E. Dulfer, Christopher D. Clark, Jeremy C. Ely, Emma L. M. Lewington, Benjamin M. Boyes, Alex C. Scoffield, Stephen Howcutt, Christiaan R. Diemont   +9 more
wiley   +1 more source

Mid-Holocene Antarctic sea-ice increase driven by marine ice sheet retreat

Climate of the Past, 2020
. Over recent decades Antarctic sea-ice extent has increased, alongside widespread ice shelf thinning and freshening of waters along the Antarctic margin. In contrast, Earth system models generally simulate a decrease in sea ice.
Kate E. Ashley, R. McKay, J. Etourneau, F. Jiménez-Espejo, A. Condron, Anya Albot, X. Crosta, C. Riesselman, O. Seki, G. Massé, N. Golledge, E. Gasson, D. Lowry, N. Barrand, Katelyn M. Johnson, N. Bertler, C. Escutia, R. Dunbar, J. Bendle   +18 more
semanticscholar   +1 more source

Beyond nocardioform: Transcriptionally active microbes and host responses in equine mucoid placentitis

Equine Veterinary Journal, EarlyView.
Abstract Background Nocardioform placentitis (NP) is an understudied form of equine placentitis historically attributed to nocardioform bacteria, yet it remains uncertain whether these organisms are the sole pathogens involved. Objectives To elucidate the pathophysiology of NP and the host–pathogen interaction. Study Design In vivo clinical multi‐omics
Machteld van Heule, Margo Verstraete, Jamie Kaj Norris, Kinga Barbara Graniczkowsa, Kirsten E. Scoggin, Hossam El‐Sheikh Ali, Barry A. Ball, Ward De Spiegelaere, Peter Daels, Bart C. Weimer, Pouya Dini   +10 more
wiley   +1 more source

A New Algorithm for Daily Sea Ice Lead Identification in the Arctic and Antarctic Winter from Thermal-Infrared Satellite Imagery

Remote Sensing, 2020
The presence of sea ice leads in the sea ice cover represents a key feature in polar regions by controlling the heat exchange between the relatively warm ocean and cold atmosphere due to increased fluxes of turbulent sensible and latent heat.
F. Reiser, S. Willmes, G. Heinemann
semanticscholar   +1 more source