Assessing the strength of the monsoon during the late Pleistocene in southwestern United States

Luz M. Cisneros-Dozal, Yongsong Huang, Jeffrey M. Heikoop, Peter J. Fawcett, Julianna Fessenden, Scott R Anderson, Philip A. Meyers, Toti Larson, George Perkins, Jaime Toney, Josef P. Werne, Fraser Goff, Giday WoldeGabriel, Craig D. Allen, Melissa A. Berke

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Improved predictions of drought require an understanding of natural and human-induced climate variability. Long-term records across glacial-interglacial cycles provide the natural component of variability, however few such records exist for the southwestern United States (US) and quantitative or semi-quantitative records of precipitation are absent. Here we use the hydrogen isotope (δD) value of C28 n-alkanoic acid in lacustrine sediments of Pleistocene age to reconstruct δD values of precipitation in northern New Mexico over two glacial-interglacial cycles (~550,000-360,000 years before present) and obtain a record of monsoon strength. Overall, reconstructed δD values range from -53.8‰ to -94.4‰, with a mean value of -77.5 ± 8‰. Remarkably, this variation falls within the measured present-day summer monsoonal and winter weighted means (-50.3 ± 3‰ and -106.4 ± 20‰ respectively), suggesting that processes similar to those of present time also controlled precipitation during Marine Isotope Stage (MIS) 13 to 10. Using the δD summer monsoonal and winter mean values as end-members, we interpret our reconstructed δD record of precipitation as a direct, and semi-quantitative, indicator of monsoon strength during MIS 13 to 10. Interglacial periods were characterized by greater monsoon strength but also greater variability compared to glacial periods. Pronounced cycles in the strength of the monsoon occurred during interglacial periods and in general were positively correlated with maximum mean annual temperatures. Our estimates of monsoon strength are supported by independent proxies of ecosystem productivity, namely, TOC, δ13C of TOC and Si/Ti ratio and warm pollen taxa Juniperus and Quercus. Interglacial variability in the strength of the monsoon resembles a response to the land-sea surface temperature contrast (LSTC) except for the early part of MIS 11. During this period, LSTC would have remained relatively strong while monsoonal strength decreased to a minimum. This minimum occurred following the warmest interval of MIS 11, suggesting a more complex driving of monsoon strength during warm periods. In addition, this period of monsoon minimum coincided with a core section of mud-cracked sediments that suggest low monsoonal precipitation was an important factor in the onset of drought. Our estimates of monsoon strength represent a record of natural variability in the region that is relevant to present time, in particular the variability during interglacial MIS 11, which is considered an analog for the current interglacial. Our results suggest that natural variability can cause significant reductions in monsoonal precipitation with the implication of a potentially adverse effect from sustained warming.

Original languageEnglish (US)
Pages (from-to)81-90
Number of pages10
JournalQuaternary Science Reviews
Volume103
DOIs
StatePublished - 2014

Fingerprint

Southwestern United States
monsoon
isotopes
Pleistocene
marine isotope stage
interglacial
drought
glacial-interglacial cycle
surface temperature
present
land surface
Values
lacustrine sediments
Juniperus
sea surface temperature
winter
summer
Late Pleistocene
hydrogen
hydrogen isotope

Keywords

  • Drought
  • Hydrogen isotope
  • Leaf plant waxes
  • Monsoonal precipitation
  • Southwestern US

ASJC Scopus subject areas

  • Global and Planetary Change
  • Archaeology
  • Ecology, Evolution, Behavior and Systematics
  • Archaeology
  • Geology

Cite this

Assessing the strength of the monsoon during the late Pleistocene in southwestern United States. / Cisneros-Dozal, Luz M.; Huang, Yongsong; Heikoop, Jeffrey M.; Fawcett, Peter J.; Fessenden, Julianna; Anderson, Scott R; Meyers, Philip A.; Larson, Toti; Perkins, George; Toney, Jaime; Werne, Josef P.; Goff, Fraser; WoldeGabriel, Giday; Allen, Craig D.; Berke, Melissa A.

In: Quaternary Science Reviews, Vol. 103, 2014, p. 81-90.

Research output: Contribution to journalArticle

Cisneros-Dozal, LM, Huang, Y, Heikoop, JM, Fawcett, PJ, Fessenden, J, Anderson, SR, Meyers, PA, Larson, T, Perkins, G, Toney, J, Werne, JP, Goff, F, WoldeGabriel, G, Allen, CD & Berke, MA 2014, 'Assessing the strength of the monsoon during the late Pleistocene in southwestern United States', Quaternary Science Reviews, vol. 103, pp. 81-90. https://doi.org/10.1016/j.quascirev.2014.08.022
Cisneros-Dozal, Luz M. ; Huang, Yongsong ; Heikoop, Jeffrey M. ; Fawcett, Peter J. ; Fessenden, Julianna ; Anderson, Scott R ; Meyers, Philip A. ; Larson, Toti ; Perkins, George ; Toney, Jaime ; Werne, Josef P. ; Goff, Fraser ; WoldeGabriel, Giday ; Allen, Craig D. ; Berke, Melissa A. / Assessing the strength of the monsoon during the late Pleistocene in southwestern United States. In: Quaternary Science Reviews. 2014 ; Vol. 103. pp. 81-90.
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AU - Huang, Yongsong

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AU - Fawcett, Peter J.

AU - Fessenden, Julianna

AU - Anderson, Scott R

AU - Meyers, Philip A.

AU - Larson, Toti

AU - Perkins, George

AU - Toney, Jaime

AU - Werne, Josef P.

AU - Goff, Fraser

AU - WoldeGabriel, Giday

AU - Allen, Craig D.

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N2 - Improved predictions of drought require an understanding of natural and human-induced climate variability. Long-term records across glacial-interglacial cycles provide the natural component of variability, however few such records exist for the southwestern United States (US) and quantitative or semi-quantitative records of precipitation are absent. Here we use the hydrogen isotope (δD) value of C28 n-alkanoic acid in lacustrine sediments of Pleistocene age to reconstruct δD values of precipitation in northern New Mexico over two glacial-interglacial cycles (~550,000-360,000 years before present) and obtain a record of monsoon strength. Overall, reconstructed δD values range from -53.8‰ to -94.4‰, with a mean value of -77.5 ± 8‰. Remarkably, this variation falls within the measured present-day summer monsoonal and winter weighted means (-50.3 ± 3‰ and -106.4 ± 20‰ respectively), suggesting that processes similar to those of present time also controlled precipitation during Marine Isotope Stage (MIS) 13 to 10. Using the δD summer monsoonal and winter mean values as end-members, we interpret our reconstructed δD record of precipitation as a direct, and semi-quantitative, indicator of monsoon strength during MIS 13 to 10. Interglacial periods were characterized by greater monsoon strength but also greater variability compared to glacial periods. Pronounced cycles in the strength of the monsoon occurred during interglacial periods and in general were positively correlated with maximum mean annual temperatures. Our estimates of monsoon strength are supported by independent proxies of ecosystem productivity, namely, TOC, δ13C of TOC and Si/Ti ratio and warm pollen taxa Juniperus and Quercus. Interglacial variability in the strength of the monsoon resembles a response to the land-sea surface temperature contrast (LSTC) except for the early part of MIS 11. During this period, LSTC would have remained relatively strong while monsoonal strength decreased to a minimum. This minimum occurred following the warmest interval of MIS 11, suggesting a more complex driving of monsoon strength during warm periods. In addition, this period of monsoon minimum coincided with a core section of mud-cracked sediments that suggest low monsoonal precipitation was an important factor in the onset of drought. Our estimates of monsoon strength represent a record of natural variability in the region that is relevant to present time, in particular the variability during interglacial MIS 11, which is considered an analog for the current interglacial. Our results suggest that natural variability can cause significant reductions in monsoonal precipitation with the implication of a potentially adverse effect from sustained warming.

AB - Improved predictions of drought require an understanding of natural and human-induced climate variability. Long-term records across glacial-interglacial cycles provide the natural component of variability, however few such records exist for the southwestern United States (US) and quantitative or semi-quantitative records of precipitation are absent. Here we use the hydrogen isotope (δD) value of C28 n-alkanoic acid in lacustrine sediments of Pleistocene age to reconstruct δD values of precipitation in northern New Mexico over two glacial-interglacial cycles (~550,000-360,000 years before present) and obtain a record of monsoon strength. Overall, reconstructed δD values range from -53.8‰ to -94.4‰, with a mean value of -77.5 ± 8‰. Remarkably, this variation falls within the measured present-day summer monsoonal and winter weighted means (-50.3 ± 3‰ and -106.4 ± 20‰ respectively), suggesting that processes similar to those of present time also controlled precipitation during Marine Isotope Stage (MIS) 13 to 10. Using the δD summer monsoonal and winter mean values as end-members, we interpret our reconstructed δD record of precipitation as a direct, and semi-quantitative, indicator of monsoon strength during MIS 13 to 10. Interglacial periods were characterized by greater monsoon strength but also greater variability compared to glacial periods. Pronounced cycles in the strength of the monsoon occurred during interglacial periods and in general were positively correlated with maximum mean annual temperatures. Our estimates of monsoon strength are supported by independent proxies of ecosystem productivity, namely, TOC, δ13C of TOC and Si/Ti ratio and warm pollen taxa Juniperus and Quercus. Interglacial variability in the strength of the monsoon resembles a response to the land-sea surface temperature contrast (LSTC) except for the early part of MIS 11. During this period, LSTC would have remained relatively strong while monsoonal strength decreased to a minimum. This minimum occurred following the warmest interval of MIS 11, suggesting a more complex driving of monsoon strength during warm periods. In addition, this period of monsoon minimum coincided with a core section of mud-cracked sediments that suggest low monsoonal precipitation was an important factor in the onset of drought. Our estimates of monsoon strength represent a record of natural variability in the region that is relevant to present time, in particular the variability during interglacial MIS 11, which is considered an analog for the current interglacial. Our results suggest that natural variability can cause significant reductions in monsoonal precipitation with the implication of a potentially adverse effect from sustained warming.

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KW - Hydrogen isotope

KW - Leaf plant waxes

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