The Last Glacial Maximum

Peter U Clark, Arthur S Dyke, Jeremy D Shakun, Anders E Carlson, Jorie Clark, Barbara Wohlfarth, Jerry X Mitrovica, Steven W Hostetler, A. Marshall McCabe

    Research output: Contribution to journalArticle

    1502 Citations (Scopus)

    Abstract

    We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pacific sea surface temperatures, and atmospheric CO2. Nearly all ice sheets were at their LGM positions from 26.5 ka to 19 to 20 ka, corresponding to minima in these forcings. The onset of Northern Hemisphere deglaciation 19 to 20 ka was induced by an increase in northern summer insolation, providing the source for an abrupt rise in sea level. The onset of deglaciation of the West Antarctic Ice Sheet occurred between 14 and 15 ka, consistent with evidence that this was the primary source for an abrupt rise in sea level ~14.5 ka.
    Original languageEnglish
    Pages (from-to)710-714
    JournalScience
    Volume325
    Issue number5941
    DOIs
    Publication statusPublished - 7 Aug 2009

    Fingerprint

    Last Glacial Maximum
    ice sheet
    insolation
    deglaciation
    sea level
    climate forcing
    summer
    Northern Hemisphere
    glacier
    sea surface temperature
    mountain

    Cite this

    Clark, P. U., Dyke, A. S., Shakun, J. D., Carlson, A. E., Clark, J., Wohlfarth, B., ... McCabe, A. M. (2009). The Last Glacial Maximum. Science, 325(5941), 710-714. https://doi.org/10.1126/science.1172873
    Clark, Peter U ; Dyke, Arthur S ; Shakun, Jeremy D ; Carlson, Anders E ; Clark, Jorie ; Wohlfarth, Barbara ; Mitrovica, Jerry X ; Hostetler, Steven W ; McCabe, A. Marshall. / The Last Glacial Maximum. In: Science. 2009 ; Vol. 325, No. 5941. pp. 710-714.
    @article{8326ded414a145658e546466e4eb7dff,
    title = "The Last Glacial Maximum",
    abstract = "We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pacific sea surface temperatures, and atmospheric CO2. Nearly all ice sheets were at their LGM positions from 26.5 ka to 19 to 20 ka, corresponding to minima in these forcings. The onset of Northern Hemisphere deglaciation 19 to 20 ka was induced by an increase in northern summer insolation, providing the source for an abrupt rise in sea level. The onset of deglaciation of the West Antarctic Ice Sheet occurred between 14 and 15 ka, consistent with evidence that this was the primary source for an abrupt rise in sea level ~14.5 ka.",
    author = "Clark, {Peter U} and Dyke, {Arthur S} and Shakun, {Jeremy D} and Carlson, {Anders E} and Jorie Clark and Barbara Wohlfarth and Mitrovica, {Jerry X} and Hostetler, {Steven W} and McCabe, {A. Marshall}",
    year = "2009",
    month = "8",
    day = "7",
    doi = "10.1126/science.1172873",
    language = "English",
    volume = "325",
    pages = "710--714",
    journal = "Science",
    issn = "0036-8075",
    number = "5941",

    }

    Clark, PU, Dyke, AS, Shakun, JD, Carlson, AE, Clark, J, Wohlfarth, B, Mitrovica, JX, Hostetler, SW & McCabe, AM 2009, 'The Last Glacial Maximum', Science, vol. 325, no. 5941, pp. 710-714. https://doi.org/10.1126/science.1172873

    The Last Glacial Maximum. / Clark, Peter U; Dyke, Arthur S; Shakun, Jeremy D; Carlson, Anders E; Clark, Jorie; Wohlfarth, Barbara; Mitrovica, Jerry X; Hostetler, Steven W; McCabe, A. Marshall.

    In: Science, Vol. 325, No. 5941, 07.08.2009, p. 710-714.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - The Last Glacial Maximum

    AU - Clark, Peter U

    AU - Dyke, Arthur S

    AU - Shakun, Jeremy D

    AU - Carlson, Anders E

    AU - Clark, Jorie

    AU - Wohlfarth, Barbara

    AU - Mitrovica, Jerry X

    AU - Hostetler, Steven W

    AU - McCabe, A. Marshall

    PY - 2009/8/7

    Y1 - 2009/8/7

    N2 - We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pacific sea surface temperatures, and atmospheric CO2. Nearly all ice sheets were at their LGM positions from 26.5 ka to 19 to 20 ka, corresponding to minima in these forcings. The onset of Northern Hemisphere deglaciation 19 to 20 ka was induced by an increase in northern summer insolation, providing the source for an abrupt rise in sea level. The onset of deglaciation of the West Antarctic Ice Sheet occurred between 14 and 15 ka, consistent with evidence that this was the primary source for an abrupt rise in sea level ~14.5 ka.

    AB - We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pacific sea surface temperatures, and atmospheric CO2. Nearly all ice sheets were at their LGM positions from 26.5 ka to 19 to 20 ka, corresponding to minima in these forcings. The onset of Northern Hemisphere deglaciation 19 to 20 ka was induced by an increase in northern summer insolation, providing the source for an abrupt rise in sea level. The onset of deglaciation of the West Antarctic Ice Sheet occurred between 14 and 15 ka, consistent with evidence that this was the primary source for an abrupt rise in sea level ~14.5 ka.

    U2 - 10.1126/science.1172873

    DO - 10.1126/science.1172873

    M3 - Article

    VL - 325

    SP - 710

    EP - 714

    JO - Science

    JF - Science

    SN - 0036-8075

    IS - 5941

    ER -

    Clark PU, Dyke AS, Shakun JD, Carlson AE, Clark J, Wohlfarth B et al. The Last Glacial Maximum. Science. 2009 Aug 7;325(5941):710-714. https://doi.org/10.1126/science.1172873