Results 91 to 100 of about 106,138 (355)
The seasonality of Antarctic sea ice trends [PDF]
Geophysical Research Letters, 2014 AbstractAntarctic sea ice is experiencing a weak overall increase in area that is the residual of opposing regional trends. This study considers their seasonal pattern. In addition to traditional ice concentration and total ice area, temporal derivatives of these quantities are investigated (“intensification” and “expansion,” respectively).
openaire +3 more sources
Pteropods as early‐warning indicators of ocean acidification
Limnology and Oceanography, EarlyView.Abstract Aragonite undersaturation (Ωar$$ {\Omega}_{\mathrm{ar}} $$ <$$ < $$ 1) events are projected to rapidly increase in frequency and duration in the Antarctic Weddell Sea by 2050. Thecosome pteropods (pelagic snails) are bioindicators of ocean acidification (OA) because their aragonite shell dissolves easily at low Ωar$$ {\Omega}_{\mathrm{ar ...
Silke Lischka +5 more
wiley +1 more source
Maritime midge radiations in the Pacific Ocean (Diptera: Chironomidae)
Systematic Entomology, Volume 48, Issue 1, Page 111-126, January 2023., 2023 We identify and confirm eight transitions from freshwater to the marine realm in the Chironomidae, based on a fossil‐calibrated phylogenetic framework. We recognise for the first time an unexpected but robust sister group of Pontomyia to be a new clade of exclusively marine species, Yaetanytarsus, forming the sister group to the diverse and global ...
Hongqu Tang +3 more
wiley +1 more source
ENSO’s impact on linear and nonlinear predictability of Antarctic sea ice
npj Climate and Atmospheric ScienceWhile the influence of ENSO on Antarctic sea ice variability is well-known, its role in sea ice predictability, both linear and nonlinear, remains unexplored.
Yunhe Wang +4 more
doaj +1 more source
Spatial-temporal variations of one-year ice in Antarctic different regions, 1988–2020
Ecological Indicators, 2023 In order to increase the comparability of Antarctic sea ice changes, we proposed a new method to quantitatively assess the spatial–temporal variation characteristics of Antarctic one-year ice based on daily Antarctic sea ice concentration data provided ...
Xingdong Wang, Hailong Zhou, Mingzhu Ji
doaj
Surrogate sea ice model enables efficient tuning [PDF]
Presented at the AI for Earth Sciences workshop at the
International Conference on Learning Representations, 2020, 2020 Predicting changes in sea ice cover is critical for shipping, ecosystem monitoring, and climate modeling. Current sea ice models, however, predict more ice than is observed in the Arctic, and less in the Antarctic. Improving the fit of these physics-based models to observations is challenging because the models are expensive to run, and therefore ...
arxiv
The Influence of Snow on Antarctic Sea Ice
, 2023 Snow cover affects the variability of the physical properties of sea ice. The snow’s unique thermal and optical properties govern the mass and energy fluxes in the sea ice system. They are important for sea ice evolution, energy exchanges between the ocean and the atmosphere, and light availability for ecosystems below the sea ice.
Dadic, R. +14 more
openaire +2 more sources
Brachiopods as archives of intrannual, annual, and interannual environmental variations
Limnology and Oceanography Letters, EarlyView.Abstract Brachiopods have been employed for environmental and climatic reconstructions in the near and geological past. Traditionally, one datapoint is obtained per shell, providing time‐averaged bulk signals. However, brachiopods also have the potential to provide time‐resolved information on (sub)annual timescales, but this has been understudied due ...
G. Crippa +8 more
wiley +1 more source
Recent observations of Antarctic sea‐ice [PDF]
Weather, 1999 Antarctic sea-ice is potentially one of the most sensitive global warming indicators. Some re- cent studies using coupled ocean-atmosphere general circulation models suggest that C0,- induced warming and concomitant sea-ice re- duction might be less marked than in the Arctic (Gordon and O’Farrell 1997); certainly the ...
openaire +1 more source
People and Nature, EarlyView.Abstract Reciprocal relationships between fishers and marine life have been documented in Indigenous fishing contexts, but there are few case studies that describe the mechanisms of such relationships, and even fewer that explore other contexts, such as that of artisanal fishers in Latin American countries.
Jaime Ojeda +5 more
wiley +1 more source