Zobrazeno 1 - 10
of 793
pro vyhledávání: '"H. Hellmer"'
Publikováno v:
Ocean Science, Vol 19, Pp 1529-1544 (2023)
Recent studies have found evidence for a potential future tipping point, when the density of Antarctic continental shelf waters, specifically in the southern Weddell Sea, will allow for the onshore flow of warm waters of open ocean origin. A cold-to-
Externí odkaz:
https://doaj.org/article/3ebe0fcb437e45909f305a408e44ba5b
Autor:
Elin Darelius, Kjersti Daae, Vår Dundas, Ilker Fer, Hartmut H. Hellmer, Markus Janout, Keith W. Nicholls, Jean-Baptiste Sallée, Svein Østerhus
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Recent modeling challenges our view on where the on-shelf heat flux in Antarctica occurs, suggesting it to be large where dense waters descend the continental slope. The authors provide observational evidence from the Weddell Sea supporting this clai
Externí odkaz:
https://doaj.org/article/4610fb0285594698afee32c5f309fb84
Autor:
Thomas Rackow, Sergey Danilov, Helge F. Goessling, Hartmut H. Hellmer, Dmitry V. Sein, Tido Semmler, Dmitry Sidorenko, Thomas Jung
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-12 (2022)
Delayed Antarctic sea-ice decline is linked to Southern Ocean eddies - and their explicit treatment in models is crucial. New multi-resolution climate change projections give a possible reason for low confidence in IPCC’s current 21st-century Antar
Externí odkaz:
https://doaj.org/article/d93ba30d8e5a40cebd842cc3b8eeb9ca
Autor:
Tore Hattermann, Keith W. Nicholls, Hartmut H. Hellmer, Peter E. D. Davis, Markus A. Janout, Svein Østerhus, Elisabeth Schlosser, Gerd Rohardt, Torsten Kanzow
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
New data from five hot-water drilled boreholes show how atmospheric anomalies affect the circulation beneath Filchner-Ronne Ice Shelf on multi-year time scales. The apparent link of the dense water formation to remote teleconnections is an important
Externí odkaz:
https://doaj.org/article/e5f2af617f6e44d891c1a281e87c0b94
Publikováno v:
The Cryosphere, Vol 14, Pp 2205-2216 (2020)
Previous studies show accelerations of West Antarctic glaciers, implying that basal melt rates of these glaciers were previously small and increased in the middle of the 20th century. This enhanced melting is a likely source of the observed Ross Sea
Externí odkaz:
https://doaj.org/article/6679f63561b1484685d25b3e77ef1948
Autor:
K. A. Naughten, K. J. Meissner, B. K. Galton-Fenzi, M. H. England, R. Timmermann, H. H. Hellmer, T. Hattermann, J. B. Debernard
Publikováno v:
Geoscientific Model Development, Vol 11, Pp 1257-1292 (2018)
An increasing number of Southern Ocean models now include Antarctic ice-shelf cavities, and simulate thermodynamics at the ice-shelf/ocean interface. This adds another level of complexity to Southern Ocean simulations, as ice shelves interact dire
Externí odkaz:
https://doaj.org/article/a64ae4d3b08c4a9bace2a1a2ba87d948
A potential tipping point on the Antarctic continental shelves, in which cold shelf water is replaced by (modified) Circumpolar Deep Water (CDW) / Warm Deep Water (WDW), is currently the subject of many studies. Such a regime shift entails a drastic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0bd6d32e8333534b6267f0b4a0969c1
https://doi.org/10.5194/egusphere-egu23-13222
https://doi.org/10.5194/egusphere-egu23-13222
Autor:
Ann Kathrin Ahrens, Hans-Christoph Selinka, Claudia Wylezich, Hubert Wonnemann, Ole Sindt, Hartmut H. Hellmer, Florian Pfaff, Dirk Höper, Thomas C. Mettenleiter, Martin Beer, Timm C. Harder
Publikováno v:
Microbiology Spectrum. 11
Avian influenza viruses (AIV) have a wide host range in the avian metapopulation and, occasionally, transmission to humans also occurs. Surface water plays a particularly important role in the epidemiology of AIV, as the natural virus reservoir is fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26b45b15945ae359c02558a049ddbc21
https://doi.org/10.1128/spectrum.02664-22
https://doi.org/10.1128/spectrum.02664-22
Autor:
S. L. Cornford, D. F. Martin, A. J. Payne, E. G. Ng, A. M. Le Brocq, R. M. Gladstone, T. L. Edwards, S. R. Shannon, C. Agosta, M. R. van den Broeke, H. H. Hellmer, G. Krinner, S. R. M. Ligtenberg, R. Timmermann, D. G. Vaughan
Publikováno v:
The Cryosphere, Vol 9, Iss 4, Pp 1579-1600 (2015)
We use the BISICLES adaptive mesh ice sheet model to carry out one, two, and three century simulations of the fast-flowing ice streams of the West Antarctic Ice Sheet, deploying sub-kilometer resolution around the grounding line since coarser resolut
Externí odkaz:
https://doaj.org/article/13aa4ae32bc94edfa30711f572e43513
Publikováno v:
Journal of Geophysical Research: Oceans. 128
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c8f36659c23f49099cd8c34237fea66
https://doi.org/10.1029/2022jc018929
https://doi.org/10.1029/2022jc018929