Results 31 to 40 of about 183,990 (318)
Evaporative controls on Antarctic precipitation: an ECHAM6 model study using innovative water tracer diagnostics [PDF]
The CryosphereImproving our understanding of the controls on Antarctic precipitation is critical for gaining insights into past and future polar and global environmental changes.
Q. Gao +9 more
doaj +1 more source
Ice Inheritance in Dynamical Disk Models
The Astrophysical Journal, 2021 Abstract The compositions of planet-forming disks are set by a combination of material inherited from the interstellar medium and material reprocessed during disk formation and evolution. Indeed, comets and primitive meteorites exhibit interstellar-like isotopic ratios and/or volatile compositions, supporting that some pristine material ...
Jennifer B. Bergner, Fred Ciesla
openaire +2 more sources
Implementation of water tracers in the Met Office Unified Model [PDF]
Geoscientific Model DevelopmentThere is an increasing need to understand how water is cycled and transported within the atmosphere, to aid water management. Here, atmospheric water tracers are added to the Met Office Unified Model (UM) to allow tracking of water within the model. This
A. J. McLaren +9 more
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Annals of Glaciology, 2023 Upernavik Isstrøm, the largest contributor to sea-level rise in northwest Greenland, has experienced complex and contrasting ice-flow-speed changes across its five outlets over the last two decades.
Kelsey M. Voss +3 more
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Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse
Nature Communications, 2016 The peak in Antarctic ice core isotope values, 128,000 years before present, was concurrent with a significantly warmer-than-present Antarctic climate.
Max D. Holloway +5 more
doaj +1 more source
The first firn core from Peter I Island – capturing climate variability across the Bellingshausen Sea [PDF]
Climate of the PastPeter I Island is situated in the Bellingshausen Sea, a region that has experienced considerable climate change in recent decades. Warming sea surface temperatures and reduced sea ice cover have been accompanied by warming surface air temperature ...
E. R. Thomas +9 more
doaj +1 more source
Bromine, iodine and sodium in surface snow along the 2013 Talos Dome–GV7 traverse (northern Victoria Land, East Antarctica) [PDF]
The Cryosphere, 2017 Halogen chemistry in the polar regions occurs through the release of halogen elements from different sources. Bromine is primarily emitted from sea salt aerosols and other saline condensed phases associated with sea ice surfaces, while iodine is affected
N. Maffezzoli +5 more
doaj +1 more source
FEBS Letters, EarlyView.This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva +5 more
wiley +1 more source
Morphology and Dynamics of Ice Rises [PDF]
Journal of Glaciology, 1980 AbstractProfile surveys are presented of four ice rises on the east coast of the Antarctic Peninsula. On Butler Island velocity measurements were also made. The ice rises behave as miniature ice caps frozen to flat horizontal bedrock and provide a simple system for the study of laws of ice flow. Deformation is principally by shear through the ice mass.
Martin, P.J., Sanderson, T. J.O.
openaire +2 more sources
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source