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Sea-ice surface temperature from atmospheric reanalysis has been used as an indicator of ice melt and climate change. However, its performance in atmospheric reanalyses is not fully understood in Antarctica. Here, we quantified biases in six widely-used reanalyses using satellite observations…
Background … The Antarctic is an extreme environment for plants. Several invasive plant species, however, have invaded the sub-Antarctic Southern Ocean islands and increasingly threaten the vulnerability of maritime and continental Antarctica, particularly with changes in climate.
Poor coverage of the Antarctic continental shelf bathymetry impedes understanding the oceanographic processes affecting Antarctica’s role in global climate. Continental shelf bathymetry influences warm modified Circumpolar Deep Water movement onto the shelf…
The Southern Ocean is disproportionately important in its effect on the Earth system, impacting climatic, biogeochemical, and ecological systems, which makes recent observed changes to this system cause for global concern.
The joint TOT-Cal / CryoVExANT2011 project contributes to the validation of the CryoSat-2 altimetry mission through investigations of a key portion of the East Antarctic ice sheet near Australia’s Casey Station. Spanning parts of Law Dome and the Totten Glacier…
The TotCal / CryoVExANT2011 project is an Australian and German collaboration that contributes to the validation of the CryoSat-2 radar altimetry mission through investigations of a key portion of East Antarctica near the Australian Casey Station.
The CRAC-ICE project aims at monitoring the calving of the Mertz Glacier tongue in East … Antarctica, an ice tongue which extends 140km from its grounding line. Legresy et al. (2004)…
We report on long-term surface elevation changes of the central Amery Ice Shelf … (AIS) by comparing elevation records spanning 4 decades (1968–2007). We use elevation … records acquired with the following methods: optical leveling (1968–1969); ERS … radar altimetry (1992–2003); GPS (1995–2006)…
Tide gauges remain the fundamental instrument used to measure water level in the coastal environment. Issues … surrounding the calibration and vertical datum control of tide gauges are therefore fundamental in studies involving … the determination of absolute sea level and its variation over time.
A barotropic tidal model has been applied to the Amery Ice Shelf cavity and Prydz … Bay region of East Antarctica. The sensitivity of the tidal solution of the model to … variation of the water column thickness of the Amery Ice Shelf cavity has been … determined.
The 8 main tidal constituents were computed using a … finite element, hydrodynamic ocean tide model over the … South Indian Ocean region. The discretization of the … domain is of the order of 100 km over the deep ocean … and a few hundred meters near the coast.
We investigate ice shelf rift propagation using a … combination of GPS and seismic measurements near the … tip of an active rift in the Amery Ice Shelf. These … measurements reveal that propagation occurs in episodic … bursts…
Unmodelled sub-daily periodic signals can propagate … into time series of daily geodetic coordinates and tropospheric … estimates at various different frequencies. Geophysical … interpretations of geodetic products, particularly at seasonal … timescales…
This paper is an extension of the paper by King et al. (2000), where two techniques were described to … process GPS data collected on a floating Antarctic ice shelf. King et al. (2000)…