Results 91 to 100 of about 2,475,812 (303)

Multiple oceanic sources of alkylamines in Southern Ocean atmospheres

npj Climate and Atmospheric Science
Measurements of pre-industrial conditions are of paramount importance for understanding historical climate change. The Southern Ocean and Antarctic continent are some of the least polluted environments on planet Earth.
Manuel Dall´Osto, Mark F. Fitzsimons, James Brean, Preston Chebai Akenga, A. Jones, Tom Lachlan-Cope, Ana Sotomayor, Elisa Berdalet, Dolors Vaque, Roy M. Harrison, Karam Mansour, Matteo Rinaldi, Stefano Decesari, David Beddows, Marco Paglione   +14 more
doaj   +1 more source

Hierarchical Population Genetic Structure in a Direct Developing Antarctic Marine Invertebrate [PDF]

, 2013
Hoffman J, Clarke A, Clark MS, Peck LS. Hierarchical Population Genetic Structure in a Direct Developing Antarctic Marine Invertebrate. PLoS ONE. 2013;8(5): e63954.Understanding the relationship between life-history variation and population structure in ...
Peck, Lloyd S., Clark, M.S., Clarke Andrew, Lloyd S Peck, Hoffman, Joseph ; https://orcid.org/, Melody S Clark, Clark, Melody S., Andrew Clarke, Hoffman Joseph I., Clark Melody S., Hoffman, J.I., Peck Lloyd S., Peck, L.S., Clarke, Andrew, Joseph I Hoffman, Clarke, A.   +15 more
core   +2 more sources

Internal Permafrost Structure of Geomorphologically Distinct Palsas in Northern Sweden Revealed by Quasi‐3D ERT

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost in northern peatlands occurs within individual palsas or extensive peat plateaus and controls local carbon storage. These permafrost landforms are complex, and their internal structure remains poorly understood. We used quasi‐3D electrical resistivity tomography (ERT) measurements, supported by UAV‐LiDAR topography, frost probing ...
Cas Renette, Mirko Pavoni, Mauricio Fuentes, Erik Sturkell, Mats Olvmo, Heather Reese   +5 more
wiley   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

Formation and distribution of water masses on the shelf and continental slope around Antarctica

Лëд и снег, 2015
Field studies of the last decades show that the structure and characteristics of the waters on the continental shelf of Antarctica have significant spatial differences.
A. V. Klepikov, N. N. Antipov
doaj   +1 more source

The Cruise of the Antarctic to the South Polar Regions

, 1896
The Norwegian businessman, shipping magnate and whaling entrepreneur Henrik Johan Bull (1844–1930) led the first expedition to make a confirmed landing on the Antarctic mainland, at Cape Adare, in January 1895. Bull's highly readable account of the expedition, published in 1896, reveals both the scientific and the commercial motivations for early ...
openaire   +2 more sources

Coupled observation‐operator approximations in outer‐loop coupling data assimilation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We present a methodology for coupled variational data assimilation that allows the effect of coupled observation operators whilst maintaining separate minimisations across model components. This allows us to constrain the atmosphere, ocean, and sea‐ice components of our coupled model directly from satellite radiances. We illustrate the system in action
P. A. Browne, P. de Rosnay, A. J. Geer, S. Quesada‐Ruiz, T. Scanlon, E. Villeneuve   +5 more
wiley   +1 more source

Low‐order system for eddy growth in the storm track

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Reanalysis data for the North Atlantic storm track are used to construct a low‐order model that optimally fits the observed interaction between the mean flow and baroclinic eddies. The resulting model is a certain type of predator–prey model. It explains various properties of the storm track, including why eddies grow linearly with the Eady growth rate,
Maarten H. P. Ambaum, Thomas H. A. Frame
wiley   +1 more source

Revision of the genus Eunotia (Bacillariophyta) in the Antarctic Region

Plant Ecology and Evolution, 2014
Abstract: Background and aims The past few years, the limnoterrestrial and aquatic diatom flora of the entire Antarctic Region (sub-Antarctic islands, Maritime Antarctic Region, Antarctic Continent) is currently under revision. One of the genera that still needed a revision is the genus Eunotia, quite common in wet to semi-wet moss vegetations in the ...
Van de Vijver, Bart, De Haan, Myriam, Lange-Bertalot, Horst   +2 more
openaire   +3 more sources

Evaluation of a stochastically perturbed parametrisations scheme for sea ice in sub‐seasonal forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Overconfident sea ice forecasts pose a challenge in subseasonal prediction. To test a potential way to address this issue and account for sea ice model uncertainty, this article investigates a stochastically perturbed parametrisations (SPP) scheme for sea ice in a prototype CY49R2 configuration of the coupled IFS‐NEMO4‐SI3 system. The results show that
Jonas Spaeth, Steffen Tietsche, Kristian Strommen, Michael Mayer, Andrea Storto, Christopher D. Roberts, Sarah‐Jane Lock, Sarah Keeley   +7 more
wiley   +1 more source