Showing 1–13 of 13 results

  1. Research |

    • Atmospheric concentrations of carbon dioxide increased between the Last... ...is thought that the evolution of this atmospheric carbon dioxide (and that of atmospheric methane) during the... ...transition was influenced by organic carbon that was stored in permafrost during the LGM and then... ...of...
  2. Research |

    • ...lakes formed across vast regions of Siberia and Alaska during the... ...and are thought to be a net source of atmospheric methane and carbon dioxide during the Holocene epoch1... ...and it remains uncertain whether carbon uptake by thermokarst lakes can... ...we use field observations of...
  3. Research | | Open

    • ...shifting disturbance regimes are causing permafrost degradation. However, the occurrence... and distribution of permafrost region disturbances (PRDs) remain... ...quantify the abundance and distribution of three primary PRDs using time... -series analysis of 30-m resolution Landsat imagery...
  4. Reviews | | Open

    • The cycling of carbon on Earth exerts a fundamental influence upon the greenhouse... gas content of the atmosphere, and hence... ...were viewed as inert components of this cycle and largely disregarded... ...global models. Research in the past decade has transformed this view... ...of... ...rates of...
  5. Research |

    • ...million years ago, Earth experienced a series of sudden and extreme global warming... ...events (hyperthermals) superimposed on a long-term warming trend1.... The first and largest of these events, the Palaeocene–... ...(PETM), is characterized by a massive input of carbon, ocean acidification2...
  6. Research |

    • The future trajectory of greenhouse gas concentrations depends on... ...and the biogeosphere1,2. Thawing of Arctic permafrost could release significant amounts of carbon into the atmosphere in this... ...7,000-kilometre-long coastline of the East Siberian Arctic Shelf... ...7, are two large pools of
  7. Reviews |

    • The carbon cycle of the coastal ocean is a dynamic component of the global carbon budget. But the diverse sources and sinks... of carbon and their complex interactions in... ...the sources, exchanges and fates of carbon in the coastal ocean and... ...have altered the carbon cycle. Recent... ...a...
  8. Research |

    • The carbon sink potential of peatlands depends on the balance... of carbon uptake by plants and microbial... decomposition. The rates of both these processes will increase... with warming but it remains unclear which will... ...the global relationship between peatland carbon accumulation rates...
  9. Reviews |

    • Over the past 3.5 million years,... ...the pre-industrial Holocene. Although past intervals of warming were forced differently than... ...simulations. Our observation-based synthesis of the understanding of past intervals with temperatures within the... ...of projected future warming suggests... ...a...
  10. Reviews |

    • The terrestrial biosphere is a key regulator of atmospheric chemistry and climate.... During past periods of climate change, vegetation cover... ...within decades. Modern observations show a similar responsiveness of terrestrial biogeochemistry to anthropogenically forced... ...carbon cycle and...
  11. Reviews |

    • Over the past 30 years, the water-... generated landforms and landscapes of Mars have been revealed in... increasing detail by a succession of spacecraft missions. Recent data... ...the view that brief episodes of water-related activity, including... ...punctuated the geological history of Mars. The...
  12. Research |

    • A key pacemaker of ice ages on the Earth... ...that these deposits formed during a geologically recent ice age that... ...emplaced symmetrically down to latitudes of 30°—equivalent to Saudi... ...response to the changing stability of water ice and dust during... ...Mars' pole of rotation and... ...an...
  13. Reviews |