Publications

10705 to 10716 of 13838 results

1. Carbon isotope evidence for recent climate-related enhancement of CO2 assimilation and peat accumulation rates in Antarctica

   Signy 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 […]

   Read more of: Carbon isotope evidence for recent climate-related enhancement of CO2 assimilation and peat accumulation rates in Antarctica

2. Thermal reaction norms and the scale of temperature variation: latitudinal vulnerability of intertidal Nacellid limpets to climate change

   The 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 […]

   Read more of: Thermal reaction norms and the scale of temperature variation: latitudinal vulnerability of intertidal Nacellid limpets to climate change

3. 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

   The 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 […]

   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 period

4. A model study of the seasonal and long-term North Atlantic surface pCO2 variability

   A 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 […]

   Read more of: A model study of the seasonal and long-term North Atlantic surface pCO2 variability

5. Mean-flow and topographic control on surface eddy-mixing in the Southern Ocean

   Surface 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 […]

   Read more of: Mean-flow and topographic control on surface eddy-mixing in the Southern Ocean

6. Antarctic ice-sheet loss driven by basal melting of ice shelves

   Accurate 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 […]

   Read more of: Antarctic ice-sheet loss driven by basal melting of ice shelves

7. Sex-specific foraging strategies throughout the breeding season in a tropical, sexually monomorphic small petrel

   Two 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 […]

   Read more of: Sex-specific foraging strategies throughout the breeding season in a tropical, sexually monomorphic small petrel

8. Greater supply of Patagonian-sourced detritus and transport by the ACC to the Atlantic sector of the Southern Ocean during the last glacial period

   Reconstructing 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 […]

   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 period

9. Seasonal and spatial dynamics of iron availability in the Scotia Sea

   The Southern Ocean is the world’s largest high nutrient low chlorophyll (HNLC) region. However, satellite images highlight several areas associated with island chains and shallow topographic features which display high […]

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10. On the nature of a short-period mesospheric gravity wave propagation over Halley, Antarctica

    As part of a collaborative program between British Antarctic Survey and Utah State University, measurements were made using an all-sky airglow imager located at the U.K. Halley Station (76°S, 27°W) […]

    Read more of: On the nature of a short-period mesospheric gravity wave propagation over Halley, Antarctica

11. Energy and ozone fluxes over sea ice

    We present surface layer measurements made over Hudson Bay seaice during February/March 2008 from the COBRA (Impact of combined iodine and bromine release on the Arctic atmosphere) experiment which formed […]

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12. Antarctic palaeo-ice streams

    We review the geomorphological, sedimentological and chronological evidence for palaeo-icestreams on the continental shelf of Antarctica and use this information to investigate basal conditions and processes, and to identify factors […]

    Read more of: Antarctic palaeo-ice streams