Global climate evolution during the last deglaciation


Abstract:

Deciphering the evolution of global climate from the end of the Last Glacial Maximum approximately 19 ka to the early Holocene 11 ka presents an outstanding opportunity for understanding the transient response of Earth's climate system to external and internal forcings. During this interval of global warming, the decay of ice sheets caused global mean sea level to rise by approximately 80 m; terrestrial and marine ecosystems experienced large disturbances and range shifts; perturbations to the carbon cycle resulted in a net release of the greenhouse gases CO2 and CH4 to the atmosphere; and changes in atmosphere and ocean circulation affected the global distribution and fluxes of water and heat. Here we summarize a major effort by the paleoclimate research community to characterize these changes through the development of welldated, high-resolution records of the deep and intermediate ocean as well as surface climate. Our synthesis indicates that the super-position of two modes explains much of the variability in regional and global climate during the last deglaciation, with a strong association between the first mode and variations in greenhouse gases, and between the second mode and variations in the Atlantic meridional overturning circulation.

Año de publicación:

2012

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Paleoclimatología
    • Clima
    • Geodinámica

    Áreas temáticas de Dewey:

    • Geología, hidrología, meteorología
    Procesado con IAProcesado con IA

    Objetivos de Desarrollo Sostenible:

    • ODS 13: Acción por el clima
    • ODS 14: Vida submarina
    • ODS 15: Vida de ecosistemas terrestres
    Procesado con IAProcesado con IA