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On the cool, moist, extremely windy … subantarctic islands, vegetation is treeless and megaherbs, tussock grasses, and cushion plants are the … dominant plant growth forms. In world terms the … subantarctic environment is an unusual one…
Abstract. Changes in stratospheric ozone have a direct impact on the solar ultraviolet radiation (UVR) levels reaching the earth’s surface. A decrease in ozone leads to an increase in the biologically effective UVB radiation (280-315 nm) with potentially serious consequences for humans [Diffey…
Abstract. A pilot study assessment of the potential exposure to solar ultraviolet radiation (UVR) of expeditioners on the Australian Antarctic resupply voyages was carried out over the summer of 2004/05 using UVR sensitive polysulphone (PS) badges.
Fan-Beam and Pencil-Beam Radar Scaterrometers on many satellites in polar orbits, e.g. ERS-1/2, ADEOS-1/2 and QuikSCAT, have been designed primarily for estimation of vector winds over the … global oceans. However, these scatterometers…
Antarctic coastal polynyas are important areas of high sea ice production and dense water … formation, and thus their detection including an estimate of thin ice thickness is essential.
The weekly National Ice Center (NIC) ice chart dataset is compared with in situ sea-ice … thickness observations from the AsPeCT program during five cruises for 1995 to 2000 … time period in the Ross Sea to discern their quality for use in monitoring sea ice thickness … and mass balance changes.
The IceCam is an automated sea ice observing and environmental da~ logging system … developedjo intly by the ScottishA ssociationf or Marine Science( SAMS) and the … Norwegian Polar Institute (NPI).
This paper introduces the recent activities of sea ice thickness observation around Syowa … station (400E), East Antarctica, conducted by the Japanese Antarctic Research Expedition … (JARE). Ship-borne video observations were conducted on 12 voyages from December … 1987.
Sea ice observations are difficult to obtain in sufficient temporal and spatial resolution. Several observational techniques have been used to build a sea ice record of ice … concentration, ice extent, and ice thickness among other things. Satellite measurements are … varied in their capabilities…
In autumn 2005, the GCOS Working Group on SST and Sea Ice (GCOS SST&SI WG) was redefined. The working group had been in existence, but inactive, for some 5 years, however it was concluded that there is a need for its activities. In short…
The Cryosphere and Climate Project (CliC) c~-ordinates climate activities related to all … parts of the earth's cryosphere. This includes sea ice, snow, ice shelves, ice bergs, lake ice, and permafrost. This talk will give a brief overview of the CliC project…
A study of the variation in snow cover and depth over the Antarctic sea ice zone was … performed using AMSR-E/Aqua snow depth and sea ice temperature products of … approximate 5-day intervals from June 2002 through December 2005. Time series statistic … analyses of mean and maximum snow depth…
Snow depth on sea ice plays a critical role in the heat exchange between ocean and … atmosphere because of its thermal insulation, which is almost an order of magnitude … greater than the thermal insulation of sea ice. Furthermore…
Long-range forecasts of Antarctic sea ice are tery much in demand, not only because of … the potential importance of sea ice in global climate, but also for the practical purpose of … exploring the Antarctic continent. Unfortunately…
I will review current efforts to model the Antarctic ice pack. Sea ice models in GCMs have … become more sophisticated in recent years; state-of-the-art models now include viscousplastic … dynamics, second-order-accurate advection, multilayer thermodynamics…
Microwave remote sensing has been a useful tool to monitor the conditions of sea ice and … ice extent in the polar regions.
I discuss 300-400 MHz ground-penetrating radar (GPR) profiles of sea ice in McMurdo … Sound, Antarctica. I recorded them in mid October, 2005 when ice temperature could have … eliminated most brine in the ice and allowed the bottom to be profiled.
Thicknesses of sea ice and snow are key variables in ice-ocean-atmosphere interactions. Sea ice insulates the warm ocean from polar air and controls the heat exchange, which is … determined by its thickness. Also, sea ice thicknesses, together with sea ice extent…