Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Enhanced tropical methane production in response to iceberg discharge in the North Atlantic
Rhodes, R.H.; Brook, E.J.; Chiang, J.C.H.; Blunier, T.; Maselli, O.J.; McConnell, J.R.; Romanini, D.; Severinghaus, J.P. (2015). Enhanced tropical methane production in response to iceberg discharge in the North Atlantic. Science (Wash.) 348(6238): 1016-1019. http://dx.doi.org/10.1126/science.1262005
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoord
    Marien/Kust
Auteurs  Top 
  • Rhodes, R.H.
  • Brook, E.J.
  • Chiang, J.C.H.
  • Blunier, T.
  • Maselli, O.J.
  • McConnell, J.R.
  • Romanini, D.
  • Severinghaus, J.P.
Abstract
    The causal mechanisms responsible for the abrupt climate changes of the Last Glacial Period remain unclear. One major difficulty is dating ice-rafted debris deposits associated with Heinrich events: Extensive iceberg influxes into the North Atlantic Ocean linked to global impacts on climate and biogeochemistry. In a new ice core record of atmospheric methane with ultrahigh temporal resolution, we find abrupt methane increases within Heinrich stadials 1, 2, 4, and 5 that, uniquely, have no counterparts in Greenland temperature proxies. Using a heuristic model of tropical rainfall distribution, we propose that Hudson Strait Heinrich events caused rainfall intensification over Southern Hemisphere land areas, thereby producing excess methane in tropical wetlands. Our findings suggest that the climatic impacts of Heinrich events persisted for 740 to 1520 years.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.