Results 61 to 70 of about 288,973 (326)

Loss of sea ice during winter north of Svalbard [PDF]

, 2014
Sea ice loss in the Arctic Ocean has up to now been strongest during summer. In contrast, the sea ice concentration north of Svalbard has experienced a larger decline during winter since 1979. The trend in winter ice area loss is close to 10% per decade,
Aagaard K., Alexeev V. A., Beszczynska-Möller A., Cokelet E., Comiso J. C, Dee D. P., Frank Nilsen, Førland E. J., Førland E. J., Grotefendt K., Hansen E., Ingrid H. Onarheim, Ivanov V. V., Lars H. Smedsrud, Lind S., Piechura J., Polyakov I. V., Polyakov I. V., Quenouille M. H, Rainville L., Randi B. Ingvaldsen, Rudels B, Rudels B, Saloranta T. M., Sandø A. B., Schauer U., Sirevaag A., Smedsrud L. H., Untersteiner N, Årthun M.   +29 more
core   +1 more source

Impact of the ice thickness distribution discretization on the sea ice concentration variability in the NEMO3.6-LIM3 global ocean–sea ice model [PDF]

Geoscientific Model Development, 2019
Abstract. This study assesses the impact of different sea ice thickness distribution (ITD) configurations on the sea ice concentration (SIC) variability in ocean-standalone NEMO3.6-LIM3 simulations. Three ITD configurations with different numbers of sea ice thickness categories and boundaries are evaluated against three different satellite products ...
Moreno Chamarro, Eduardo, Ortega Montilla, Pablo, Massonnet, François   +2 more
openaire   +7 more sources

Direct determination of the air-sea CO₂ gas transfer velocity in Arctic sea-ice regions [PDF]

, 2017
The Arctic Ocean is an important sink for atmospheric CO₂. The impact of decreasing sea-ice extent and expanding marginal ice zones on Arctic air-sea CO₂ exchange depends on the rate of gas transfer in the presence of sea ice.
Anderson, LG, Brooks, IM, Crill, PM, Geibel, MC, Humborg, C, Prytherch, J, Salisbury, DJ, Thornton, BF, Tjernström, M   +8 more
core   +1 more source

Assimilation of satellite swaths versus daily means of sea ice concentration in a regional coupled ocean–sea ice model

The Cryosphere, 2023
Abstract. Operational forecasting systems routinely assimilate daily means of sea ice concentration (SIC) from microwave radiometers in order to improve the accuracy of the forecasts. However, the temporal and spatial averaging of the individual satellite swaths into daily means of SIC entails two main drawbacks: (i) the spatial resolution of the ...
Durán Moro, Marina, Sperrevik, Ann Kristin, Lavergne, Thomas, Bertino, Laurent, Gusdal, Yvonne, Iversen, Silje Christine, Rusin, Jozef   +6 more
openaire   +6 more sources

Improving short-term sea ice concentration forecasts using deep learning [PDF]

The Cryosphere
Reliable short-term sea ice forecasts are needed to support maritime operations in polar regions. While sea ice forecasts produced by physically based models still have limited accuracy, statistical post-processing techniques can be applied to reduce ...
C. Palerme, T. Lavergne, J. Rusin, A. Melsom, J. Brajard, A. F. Kvanum, A. F. Kvanum, A. Macdonald Sørensen, L. Bertino, M. Müller, M. Müller   +10 more
doaj   +1 more source

Holocene carbon-cycle dynamics based on CO2 trapped in ice at Taylor Dome, Antarctica [PDF]

, 1999
A high-resolution ice-core record of atmospheric CO2 concentration over the Holocene epoch shows that the global carbon cycle has not been in steady state during the past 11,000 years.
Blunier, T., Deck, B., Fischer, Hubertus, Indermühle, A., Joos, F., Mastroianni, D., Meyer, R., Smith, J., Stauffer, B., Stocker, T. F., Tschumi, J., Wahlen, M.   +11 more
core   +1 more source

Ergothioneine supplementation improves pup phenotype and survival in a murine model of spinal muscular atrophy

FEBS Letters, EarlyView.
Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile, Daniela Ratto, Giorgia Rastelli, Ottavia Eleonora Ferraro, Caterina Temporini, Sunil Kumar, Simona Boncompagni, Paola Rossi, Monica Canepari   +8 more
wiley   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Observed Concentration Budgets of Arctic and Antarctic Sea Ice

Journal of Climate, 2016
Abstract In recent decades, Antarctic sea ice has expanded slightly while Arctic sea ice has contracted dramatically. The anthropogenic contribution to these changes cannot be fully assessed unless climate models are able to reproduce them.
Holland, Paul R., Kimura, Noriaki
openaire   +3 more sources

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

FEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki, Masae Ohtsuka, Takeshi Nakano, Masaru Tanokura, Takuya Miyakawa   +4 more
wiley   +1 more source