Results 51 to 60 of about 5,134,596 (300)

Calibration of sea ice dynamic parameters in an ocean‐sea ice model using an ensemble Kalman filter [PDF]

Journal of Geophysical Research: Oceans, 2014
AbstractThe choice of parameter values is crucial in the course of sea ice model development, since parameters largely affect the modeled mean sea ice state. Manual tuning of parameters will soon become impractical, as sea ice models will likely include more parameters to calibrate, leading to an exponential increase of the number of possible ...
F. Massonnet, H. Goosse, T. Fichefet, F. Counillon   +3 more
openaire   +2 more sources

An assessment of key model parametric uncertainties in projections of Greenland Ice Sheet behavior [PDF]

, 2012
Lack of knowledge about the values of ice sheet model input parameters introduces substantial uncertainty into projections of Greenland Ice Sheet contributions to future sea level rise.
Stone, Emma J., N. Kirchner, K. Keller, Keller, K., Greve, Ralf, Applegate, P. J., Greve, R., R. Greve, Keller, Klaus, Kirchner, N., Applegate, Patrick J.,, Applegate, Patrick J., Kirchner, Nina, Stone, EJ, Kirchner, Nina,, E. J. Stone, Stone, E. J., P. J. Applegate   +17 more
core   +2 more sources

The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice

Journal of Advances in Modeling Earth Systems, 2021
The mechanical interactions between ice floes in the polar sea‐ice packs play an important role in the state and predictability of the sea‐ice cover. We use a Lagrangian‐based numerical model to investigate such floe‐floe interactions.
A. Damsgaard, O. Sergienko, A. Adcroft
doaj   +1 more source

Remote Measurement of Sea Ice Dynamics With Regularized Optimal Transport [PDF]

Geophysical Research Letters, 2019
AbstractAs Arctic conditions rapidly change, human activity in the Arctic will continue to increase and so will the need for high‐resolution observations of sea ice. While satellite imagery can provide high spatial resolution, it is temporally sparse and significant ice deformation can occur between observations.
M. D. Parno, B. A. West, A. J. Song, T. S. Hodgdon, D. T. O'Connor   +4 more
openaire   +3 more sources

Differences Between the CMIP5 and CMIP6 Antarctic Sea Ice Concentration Budgets

Geophysical Research Letters, 2023
Compared to the Coupled Model Intercomparison Project Phase 5 (CMIP5) climate models, the Antarctic sea ice area (SIA) has been improved in Phase 6 (CMIP6).
Yafei Nie, Xia Lin, Qinghua Yang, Jiping Liu, Dake Chen, Petteri Uotila   +5 more
doaj   +1 more source

Holocene sea-ice dynamics in Petermann Fjord [PDF]

, 2021
Abstract. The Petermann 2015 Expedition to Petermann Fjord and adjacent Hall Basin recovered a transect of cores from Nares Strait to under the 48 km long ice tongue of Petermann glacier, offering a unique opportunity to study ice-ocean-sea ice interactions at the interface of these realms.
Henrieka Detlef, Brendan Reilly, Anne Jennings, Mads Mørk Jensen, Matt O'Regan, Marianne Glasius, Jesper Olsen, Martin Jakobsson, Christof Pearce   +8 more
openaire   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Recent changes in the dynamic properties of declining Arctic sea ice: A model study

Geophysical Research Letters, 2012
Results from a numerical model simulation show significant changes in the dynamic properties of Arctic sea ice during 2007–2011 compared to the 1979–2006 mean.
Jinlun Zhang, Ron Lindsay, Axel Schweiger, Ignatius Rigor   +3 more
doaj   +1 more source

Dynamics of Arctic sea ice discussed at workshop [PDF]

Eos, Transactions American Geophysical Union, 2000
Sea ice is an interesting geophysical material: it behaves as a large‐scale hardening plastic. Consider the impact of the sea‐ice covers mechanical behavior on the energy and momentum exchange within the complex atmosphere‐ice‐ocean system. Sea ice acts as an insulator between the relatively warm ocean water and the cold polar atmosphere. Sea ice cover
James Overland, Jinro Ukita
openaire   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source