Results 71 to 80 of about 3,539,778 (300)

Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years [PDF]

, 2016
Past fluctuations of the West Antarctic Ice Sheet (WAIS) are of fundamental interest because of the possibility of WAIS collapse in the future and a consequent rise in global sea level.
Sugden, David, Stuart, Finlay, Freeman, Stewart, Freeman, Stewart P.H.T., Woodward, John, Marrero, Shasta, Steig, Eric J., Stuart, Finlay M., Westoby, M. J., Westoby, Matt, Sugden, David E., Marrero, Shasta M., Freeman, Stewart P. H. T., Dunning, Stuart, Winter, Kate, Hein, Andrew, Westoby, Matthew J., Hein, Andrew S., Dunning, Stuart A., Steig, Eric, Steig, Eric.J., Hein, Andrew; id_orcid   +21 more
core   +1 more source

The sensitivity of sea-ice brine fraction to the freezing temperature and orientation

Annals of Glaciology
The changing conditions in which sea ice forms and exists are likely to affect the properties of sea ice itself, and potential climate feedbacks need to be identified and understood to improve future projections.
Kial Douglas Stewart, William Palm, Callum James Shakespeare, Noa Kraitzman   +3 more
doaj   +1 more source

Impact of assimilating sea ice concentration, sea ice thickness and snow depth in a coupled ocean–sea ice modelling system [PDF]

The Cryosphere, 2018
Abstract. The accuracy of the initial state is very important for the quality of a forecast, and data assimilation is crucial for obtaining the best-possible initial state. For many years, sea-ice concentration was the only parameter used for assimilation into numerical sea-ice models.
Sindre Fritzner, Rune Graversen, Kai H. Christensen, Philip Rostosky, Keguang Wang   +4 more
openaire   +4 more sources

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source

High-resolution regional sea-ice model based on the discrete element method with boundary conditions from a large-scale model for ice drift

Annals of Glaciology
Understanding sea-ice dynamics at the floe scale is crucial to comprehend polar climate systems. While continuum models are commonly used to simulate large-scale sea-ice dynamics, they have limitations in accurately representing sea-ice behaviour at ...
Andrei Tsarau, Wenjun Lu, Raed Lubbad, Sveinung Løset, Yuan Zhang   +4 more
doaj   +1 more source

What sea-ice biogeochemical modellers need from observers

Elementa: Science of the Anthropocene, 2016
Numerical models can be a powerful tool helping to understand the role biogeochemical processes play in local and global systems and how this role may be altered in a changing climate.
Nadja Steiner, Clara Deal, Delphine Lannuzel, Diane Lavoie, François Massonnet, Lisa A. Miller, Sebastien Moreau, Ekaterina Popova, Jacqueline Stefels, Letizia Tedesco   +9 more
doaj   +1 more source

ICESHEET 1.0: a program to produce paleo-ice sheet reconstructions with minimal assumptions [PDF]

Geoscientific Model Development, 2016
We describe a program that produces paleo-ice sheet reconstructions using an assumption of steady-state, perfectly plastic ice flow behaviour. It incorporates three input parameters: ice margin, basal shear stress and basal topography.
E. J. Gowan, P. Tregoning, A. Purcell, J. Lea, O. J. Fransner, R. Noormets, J. A. Dowdeswell   +6 more
doaj   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

The evolution of the Greenland Ice Sheet from the Last Glacial Maximum to present-day: An assessment using glaciological and Glacial Isostatic Adjustment modelling [PDF]

, 2009
In this thesis we constrain a three-dimensional thermomechanical model of Greenland ice sheet (GrIS) evolution from the Last Glacial Maximum (LGM, 21 ka BP) to the present-day using, primarily, observations of relative sea level (RSL) as well as field ...
SIMPSON, MATTHEW,JAMES,ROSS
core  

Exploring beneath the PIG Ice Shelf with the Autosub3 AUV [PDF]

, 2009
On 31st January 2009, two numbers: “range and bearing” flashing up on a laptop screen, indicated that Autosub3 had returned from its last mission beneath the Pine Island Glacier (PIG) Ice Shelf in the Western Antarctic.
Furlong, Maaten E, White, Davie, J.R. Perrett, M. Pebody, P. Stevenson, Stevenson, Peter, Webb, Andy, McPhail, Stephen D, D. White, M. E. Furlong, S. D. McPhail, Perrett, James R, A. Webb   +12 more
core   +2 more sources