Wind-driven trends in Antarctic sea-ice drift
The sea-ice cover around Antarctica has experienced a slight expansion in area over the past decades1, 2. This small overall increase is the sum of much larger opposing trends in […]
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Read more of: Wind-driven trends in Antarctic sea-ice drift
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The Amundsen Sea Polynya International Research Expedition (ASPIRE)
Read more of: The Amundsen Sea Polynya International Research Expedition (ASPIRE)In search of an explanation for some of the greenest waters ever seen in coastal Antarctica and their possible link to some of the fastest melting glaciers and declining summer […]
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Inland thinning of West Antarctic Ice Sheet steered along subglacial rifts
Read more of: Inland thinning of West Antarctic Ice Sheet steered along subglacial riftsCurrent ice loss from the West Antarctic Ice Sheet (WAIS) accounts for about ten per cent of observed global sea-level rise1. Losses are dominated by dynamic thinning, in which forcings […]
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Carbon isotope evidence for recent climate-related enhancement of CO2 assimilation and peat accumulation rates in Antarctica
Read more of: Carbon isotope evidence for recent climate-related enhancement of CO2 assimilation and peat accumulation rates in AntarcticaSigny Island, maritime Antarctic, lies within the region of the Southern Hemisphere that is currently experiencing the most rapid rates of environmental change. In this study, peat cores up to […]
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Thermal reaction norms and the scale of temperature variation: latitudinal vulnerability of intertidal Nacellid limpets to climate change
Read more of: Thermal reaction norms and the scale of temperature variation: latitudinal vulnerability of intertidal Nacellid limpets to climate changeThe thermal reaction norms of 4 closely related intertidal Nacellid limpets, Antarctic (Nacella concinna), New Zealand (Cellana ornata), Australia (C. tramoserica) and Singapore (C. radiata), were compared across environments with […]
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Controls on the tropospheric oxidizing capacity during an idealized Dansgaard-Oeschger event, and their implications for the rapid rises in atmospheric methane during the last glacial period
Read more of: Controls on the tropospheric oxidizing capacity during an idealized Dansgaard-Oeschger event, and their implications for the rapid rises in atmospheric methane during the last glacial periodThe ice core record reveals large variations in the concentration of atmospheric methane, [CH4], over the last 800 kyr. Amongst the most striking natural features are the large, rapid rises […]
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A model study of the seasonal and long-term North Atlantic surface pCO2 variability
Read more of: A model study of the seasonal and long-term North Atlantic surface pCO2 variabilityA coupled biogeochemical-physical ocean model is used to study the seasonal and long–term variations of surface pCO2 in the North Atlantic Ocean. The model agrees well with recent underway pCO2 […]
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Mean-flow and topographic control on surface eddy-mixing in the Southern Ocean
Read more of: Mean-flow and topographic control on surface eddy-mixing in the Southern OceanSurface cross-stream eddy diffusion in the Southern Ocean is estimated by monitoring dispersion of particles numerically advected with observed satellite altimetry velocity fields. To gain statistical significance and accuracy in […]
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Antarctic ice-sheet loss driven by basal melting of ice shelves
Read more of: Antarctic ice-sheet loss driven by basal melting of ice shelvesAccurate prediction of global sea-level rise requires that we understand the cause of recent, widespread and intensifying1, 2 glacier acceleration along Antarctic ice-sheet coastal margins3. Atmospheric and oceanic forcing have […]
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Sex-specific foraging strategies throughout the breeding season in a tropical, sexually monomorphic small petrel
Read more of: Sex-specific foraging strategies throughout the breeding season in a tropical, sexually monomorphic small petrelTwo hypotheses have been proposed to explain sex-related differences in foraging in sexually monomorphic seabirds. The ‘intersexual competition’ hypothesis suggests that parents are in competition and that the dominated sex […]
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Greater supply of Patagonian-sourced detritus and transport by the ACC to the Atlantic sector of the Southern Ocean during the last glacial period
Read more of: Greater supply of Patagonian-sourced detritus and transport by the ACC to the Atlantic sector of the Southern Ocean during the last glacial periodReconstructing past detrital flux and provenance in the SouthernOcean provides information about changes in source regions associated with climate variations and transport pathways. We present a LastGlacial Maximum (LGM) to […]