Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Elizabeth R. Thomas"'
Autor:
Quentin Dalaiden, Jeanne Rezsöhazy, Hugues Goosse, Elizabeth R. Thomas, Diana O. Vladimirova, Dieter Tetzner
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 21, Pp n/a-n/a (2023)
Abstract Sea‐ice extent is predicted to decrease in a warming climate. However, despite global warming over the past century, total Antarctic sea ice remained relatively stable from 1979 until 2015, before strongly melting. Here we explore the long
Externí odkaz:
https://doaj.org/article/88e99a364fd1430fab783a1e41fd2f57
Autor:
Mackenzie M. Grieman, Helene M. Hoffmann, Jack D. Humby, Robert Mulvaney, Christoph Nehrbass-Ahles, Julius Rix, Elizabeth R. Thomas, Rebecca Tuckwell, Eric W. Wolff
Publikováno v:
Journal of Glaciology, Vol 68, Pp 90-100 (2022)
Dissolved and particulate sodium, magnesium and calcium are analyzed in ice cores to determine past changes in sea ice extent, terrestrial dust variability and atmospheric aerosol transport efficiency. They are also used to date ice cores if annual l
Externí odkaz:
https://doaj.org/article/11c0b92f81d547fd9036add7658c9dcb
Publikováno v:
Geosciences, Vol 13, Iss 3, p 85 (2023)
Here we present a case study for using visual stratigraphy to date a shallow firn core from coastal West Antarctica. The Mount Siple ice core has the potential to reconstruct climate in this data-sparse region over recent decades. Line scanned images
Externí odkaz:
https://doaj.org/article/034ba27be39241b5bd3580f37c5a59a3
Publikováno v:
Geosciences, Vol 12, Iss 9, p 344 (2022)
In this study, we used the stable water isotope record (δ18O) from an ice core drilled in Palmer Land, southern Antarctic Peninsula (AP). Utilizing δ18O we identified two climate regimes during the satellite era. During the 1979–1998 positive int
Externí odkaz:
https://doaj.org/article/979e460ff9c9423e974ab112114b3d93
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
The insoluble particulate matter deposited on ice sheets provide key information to reconstruct past climate. The low concentration of some insoluble particulate matter, such as terrigenous particles and microfossils, challenges the efficiency of the
Externí odkaz:
https://doaj.org/article/2999f747353a4732bed283770b79bbe9
Autor:
B. Daniel Emanuelsson, Elizabeth R. Thomas, Dieter R. Tetzner, Jack D. Humby, Diana O. Vladimirova
Publikováno v:
Geosciences, Vol 12, Iss 2, p 87 (2022)
In this study, we present the age scales for three Antarctic Peninsula (AP) ice cores: Palmer, Rendezvous, and Jurassic. The three cores are all intermediate-depth cores, in the 133–141 m depth range. Non-sea-salt sulfate ([nssSO42−]) and hydroge
Externí odkaz:
https://doaj.org/article/8718fad4141547e7b9f114e43926d9bc
Autor:
Jan T. M. Lenaerts, Stefan R. M. Ligtenberg, Brooke Medley, Willem Jan Van de Berg, Hannes Konrad, Julien P. Nicolas, J. Melchior Van Wessem, Luke D. Trusel, Robert Mulvaney, Rebecca J. Tuckwell, Anna E. Hogg, Elizabeth R. Thomas
Publikováno v:
Annals of Glaciology, Vol 59, Pp 29-41 (2018)
West Antarctic climate and surface mass balance (SMB) records are sparse. To fill this gap, regional atmospheric climate modelling is useful, providing that such models are employed at sufficiently high horizontal resolution and coupled with a snow m
Externí odkaz:
https://doaj.org/article/1170a321cb504e068377d99257e81bb6
Autor:
Dorothea Elisabeth Moser, Sarah Jackson, Helle Astrid Kjær, Bradley Markle, Estelle Ngoumtsa, Joel B. Pedro, Delia Segato, Andrea Spolaor, Dieter Tetzner, Paul Vallelonga, Elizabeth R. Thomas
Publikováno v:
Geosciences, Vol 11, Iss 9, p 368 (2021)
The climate of the sub-Antarctic is important in understanding the environmental conditions of Antarctica and the Southern Ocean. However, regional climate proxy records from this region are scarce. In this study, we present the stable water isotopes
Externí odkaz:
https://doaj.org/article/4cb06eec7ae04e509fb17707f3be1ab9
Autor:
Claire S. Allen, Elizabeth R. Thomas, Hilary Blagbrough, Dieter R. Tetzner, Richard A. Warren, Emily C. Ludlow, Thomas J. Bracegirdle
Publikováno v:
Geosciences, Vol 10, Iss 3, p 87 (2020)
Winds in the Southern Ocean drive exchanges of heat and carbon dioxide between the ocean and atmosphere. Wind dynamics also explain the dominant patterns of both basal and surface melting of glaciers and ice shelves in the Amundsen and Bellingshausen
Externí odkaz:
https://doaj.org/article/e587eda45ca94766a0368665a373d8bc
Autor:
Thomas J. Bracegirdle, Florence Colleoni, Nerilie J. Abram, Nancy A. N. Bertler, Daniel A. Dixon, Mark England, Vincent Favier, Chris J. Fogwill, John C. Fyfe, Ian Goodwin, Hugues Goosse, Will Hobbs, Julie M. Jones, Elizabeth D. Keller, Alia L. Khan, Steven J. Phipps, Marilyn N. Raphael, Joellen Russell, Louise Sime, Elizabeth R. Thomas, Michiel R. van den Broeke, Ilana Wainer
Publikováno v:
Geosciences, Vol 9, Iss 6, p 255 (2019)
Quantitative estimates of future Antarctic climate change are derived from numerical global climate models. Evaluation of the reliability of climate model projections involves many lines of evidence on past performance combined with knowledge of the
Externí odkaz:
https://doaj.org/article/7d546f82778344feb56853ce4db390c1