A5061754269- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Topic Modeling
- Natural Language Processing Techniques
- Climate change and permafrost
- Text Readability and Simplification
- Methane Hydrates and Related Phenomena
- Marine animal studies overview
- Geology and Paleoclimatology Research
- Winter Sports Injuries and Performance
- Climate variability and models
- Multimodal Machine Learning Applications
- Polar Research and Ecology
- Marine and coastal ecosystems
- Laser Material Processing Techniques
- Speech Recognition and Synthesis
- Oceanographic and Atmospheric Processes
- Avian ecology and behavior
- Hate Speech and Cyberbullying Detection
- Advanced Fiber Optic Sensors
- Marine Biology and Ecology Research
- Landslides and related hazards
- Marine and coastal plant biology
- Additive Manufacturing Materials and Processes
- Ocean Acidification Effects and Responses
Australian Antarctic Division
2011-2025
University of Tasmania
2016-2025
Antarctic Climate and Ecosystems Cooperative Research Centre
2013-2025
Allen Institute
2025
Allen Institute for Brain Science
2025
Integral Consulting (United States)
2024
Ludwig-Maximilians-Universität München
2016-2023
Munich Center for Machine Learning
2022-2023
Microsoft (Germany)
2023
University of Aveiro
2022
Contrasting regional changes in Southern Ocean sea ice have occurred over the last 30 years with distinct effects on ecosystem structure and function. Quantifying how Antarctic predators respond to such provides context for predicting climate variability/change will affect these assemblages into future. Over an 11-year time-series, we examine inter-annual variability concentration advance foraging behaviour of a top predator, southern elephant seal. Females foraged longer pack greatest...
Abstract A fourth production region for the globally important Antarctic bottom water has been attributed to dense shelf formation in Cape Darnley Polynya, adjoining Prydz Bay East Antarctica. Here we show new observations from CTD-instrumented elephant seals 2011–2013 that provide first complete assessment of Bay. After a complex evolution involving opposing contributions three polynyas (positive) and two ice shelves (negative), (salinity 34.65–34.7) is exported through Channel. This...
Abstract In recent years, the Southern Ocean has experienced extremely low sea ice cover in multiple summers. These events were preceded by a multidecadal positive trend that culminated record high coverage 2014. This abrupt transition led some authors to suggest Antarctic undergone regime shift. this study we analyze satellite and atmospheric reanalyses assess evidence for such We find standard deviation of summer doubled from 0.31 million km 2 1979–2006 0.76 2007–22. increased variance is...
Abstract This study presents the first continuous, high spatiotemporal resolution time series of landfast sea ice extent along East Antarctic coast for period March 2000–December 2008. The was derived from consecutive 20-day cloud-free Moderate Resolution Imaging Spectroradiometer (MODIS) composite images. Fast across shows a statistically significant (1.43% ±0.30% yr−1) increase. Regionally, there is strong increase in Indian Ocean sector (20°–90°E, 4.07% ±0.42% yr−1), and nonsignificant...
Abstract Enhanced sea ice production (SIP) in Antarctic coastal polynyas forms dense shelf water (DSW), leading to Bottom Water (AABW) formation that ultimately drives the lower limb of meridional overturning circulation. Some studies suggest variability SIP is driven by influence atmospheric forcing, i.e., surface winds and air temperature. Our previous mapping 13 major from 1992 2007, using a heat flux calculation with thickness data derived satellite data, extended here examine...
Sea ice is a key habitat in the high latitude Southern Ocean and predicted to change its extent, thickness duration coming decades. The sea-ice cover instrumental mediating ocean–atmosphere exchanges provides an important substrate for organisms from microbes algae predators. Antarctic krill, Euphausia superba, reliant on sea during phases of life cycle, particularly larval stages, food refuge their predators, while other small grazers, including copepods amphipods, either live brine channel...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. This record-shattering event saw numerous monthly records being broken including a new all-time record of −9.4°C on 18 at Concordia Station despite typically transition month to Antarctic coreless winter. The driver for these extremes was intense atmospheric river advecting subtropical/midlatitude moisture deep into interior. scope...
Abstract Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. In Part I, we assessed meteorological drivers that generated intense atmospheric river (AR) caused these record-shattering anomalies. Here, continue our large collaborative study by analyzing diverse impacts driven AR landfall. These included rain surface melt was recorded along coastal areas, but this outweighed high snowfall...
Experimental access to cell types within the mammalian spinal cord is severely limited by availability of genetic tools. To enable motor neurons (SMNs) and SMN subtypes, we generated single-cell multiome datasets from mouse macaque cords discovered putative enhancers for each neuronal population. We cloned these into adeno-associated viral vectors driving a reporter fluorophore functionally screened them in mouse. extensively characterized most promising candidate rat developed an optimized...
The Mertz Glacier tongue (MGT), East Antarctica, has a large area of multi‐year fast sea ice (MYFI) attached to its eastern edge. We use various satellite data sets study the extent, age, and thickness MYFI how it interacts with MGT. estimate age be at least 25 years 10–55 m; this is an order magnitude thicker than average regional sea‐ice too thick formed through growth alone. speculate that most plausible process for after initial formation marine (frazil) accretion. provide two types...
Recent analyses have shown that significant changes occurred in patterns of sea ice seasonality West Antarctica since 1979, with wide-ranging climatic, biological and biogeochemical consequences. Here, we provide the first detailed report on long-term change variability annual timings advance, retreat resultant season duration East Antarctica. These were calculated from satellite-derived concentration data for period 1979/80 to 2009/10. The pattern off comprises mixed signals regional local...
Abstract Dense shelf water formed in the Mertz Polynya supplies lower limb of global overturning circulation, ventilating abyssal Indian and Pacific Oceans. Calving Glacier Tongue (MGT) February 2010 altered regional distribution ice reduced size activity polynya. The salinity density dense declined abruptly after calving, consistent with a reduction sea formation Breakout melt thick multiyear released by movement iceberg B9B MGT freshened near‐surface waters. input meltwater likely enhanced...
Variability in dense shelf water formation can potentially impact Antarctic Bottom Water (AABW) production, a vital component of the global climate system. In East Antarctica, George V Land polynya system (142–150°E) is structured by local 'icescape', promoting sea ice that driven offshore wind regime. Here we present first observations this region after repositioning large iceberg (B9B) precipitated calving Mertz Glacier Tongue 2010. Using satellite data, find total production for 2010 and...
For efficiency considerations, state-of-theart neural machine translation (NMT) requires the vocabulary to be restricted a limited-size set of several thousand symbols.This is highly problematic when translating into inflected or compounding languages.A typical remedy use subword units, where words are segmented smaller components.Byte pair encoding, purely corpus-based approach, has proved effective recently.In this paper, we investigate word segmentation strategies that incorporate more...
Abstract Observed thinning of the Totten Glacier in East Antarctica has cast doubt upon stability Antarctic Ice Sheet. Recent oceanographic observations at front Shelf have confirmed presence modified Circumpolar Deep Water (mCDW), which likely promotes enhanced melting. Details how this water accesses shelf remain uncertain. Here we present new bathymetry and autumnal data from outer continental shelf, north Glacier, that show up to 0.7°C mCDW a >100 km wide >500 m deep depression...
Abstract. Landfast sea ice (fast ice) is an important though poorly understood component of the cryosphere on Antarctic continental shelf, where it plays a key role in atmosphere–ocean–ice-sheet interaction and coupled ecological biogeochemical processes. Here, we present first in-depth baseline analysis variability change circum-Antarctic fast-ice distribution (including its relationship to bathymetry), based new high-resolution satellite-derived time series for period 2000 2018. This...
Abstract. Landfast sea ice (fast ice) is an important component of the Antarctic nearshore marine environment, where it strongly modulates sheet–ocean–atmosphere interactions and biological biogeochemical processes, forms a key habitat, affects logistical operations. Given wide-ranging importance fast its sensitivity to climate change, improved knowledge change variability in distribution high priority. fast-ice mapping date has been limited regional studies time series covering East...
<title>Abstract</title> The retreat of Antarctic ice shelves due to calving and the subsequent reduction in buttressing Ice Sheet are major concern for future sea-level rise. Sudden, widespread weakened has been linked fracture amplification forced by ocean swell following regional sea-ice losses. Increases magnitude duration swell-induced ice-shelf flexure lead-up events have not tracked previously. We present seven-year datasets sea-ice-barrier lengths shelf-front flexural stress that...
NMT systems have problems with large vocabulary sizes.Byte-pair encoding (BPE) is a popular approach to solving this problem, but while BPE allows the system generate any target-side word, it does not enable effective generalization over rich in morphologically languages strong inflectional phenomena.We introduce simple overcome problem by training produce lemma of word and its POS tag, which then followed deterministic generation step.We apply strategy for English-Czech English-German...
Ocean–cryosphere interactions along the Adélie and George V Land (AGVL) coast are investigated using a coupled ocean–sea ice–ice shelf model. The dominant feature of Mertz Glacier Tongue (MGT), located at approximately 145°E, was highly productive winter coastal polynya system, until its calving in February 2010 dramatically changed regional “icescape.” This study examines annual mean, seasonal, interannual variabilities sea ice production; basal melting MGT; shelves, large icebergs, fast...