Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles

M. H. M. Groot; R. G. Bogotá; L. J. Lourens; H. Hooghiemstra; M. Vriend; J. C. Berrio; E. Tuenter; J. van der Plicht; B. van Geel; M. Ziegler; S. L. Weber; A. Betancourt; L. Contreras; S. Gaviria; C. Giraldo; N. González; J. H. F. Jansen; M. Konert; D. Ortega; O. Rangel; G. Sarmiento; J. Vandenberghe; T. van der Hammen; M. van der Linden; W. Westerhoff

doi:10.5194/cpd-6-2117-2010

Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles

M. H. M. Groot, R. G. Bogotá, L. J. Lourens, H. Hooghiemstra, M. Vriend, J. C. Berrio, E. Tuenter, J. van der Plicht, B. van Geel, M. Ziegler, S. L. Weber, A. Betancourt, L. Contreras, S. Gaviria, C. Giraldo, N. González, J. H. F. Jansen, M. Konert, D. Ortega, O. RangelG. Sarmiento, J. Vandenberghe, T. van der Hammen, M. van der Linden, W. Westerhoff

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Abstract

Tropical montane biome migration patterns in the northern Andes are found to be coupled to glacial-induced mean annual temperature (MAT) changes; however, the accuracy and resolution of current records are insufficient to fully explore their magnitude and rates of change. Here we present a ~60-year resolution pollen record over the past 284 000 years from Lake Fúquene (5° N) in Colombia. This record shows rapid and extreme MAT changes at 2540 m elevation of up to 10 ± 2 °C within a few hundred of years that concur with the ~100 and 41-kyr (obliquity) paced glacial cycles and North Atlantic abrupt climatic events as documented in ice cores and marine sediments. Using transient climate modelling experiments we demonstrate that insolation-controlled ice volume and greenhouse gasses are the major forcing agents causing the orbital MAT changes, but that the model simulations significantly underestimate changes in lapse rates and local hydrology and vegetation feedbacks within the studied region due to its low spatial resolution.

Original language	English
Pages	2117-2158
Number of pages	42
Volume	6
DOIs	https://doi.org/10.5194/cpd-6-2117-2010
Publication status	Published - Oct-2010

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Groot, M. H. M., Bogotá, R. G., Lourens, L. J., Hooghiemstra, H., Vriend, M., Berrio, J. C., Tuenter, E., van der Plicht, J., van Geel, B., Ziegler, M., Weber, S. L., Betancourt, A., Contreras, L., Gaviria, S., Giraldo, C., González, N., Jansen, J. H. F., Konert, M., Ortega, D., ... Westerhoff, W. (2010). Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles. (5 ed.) (pp. 2117-2158). https://doi.org/10.5194/cpd-6-2117-2010

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title = "Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles",

abstract = "Tropical montane biome migration patterns in the northern Andes are found to be coupled to glacial-induced mean annual temperature (MAT) changes; however, the accuracy and resolution of current records are insufficient to fully explore their magnitude and rates of change. Here we present a ~60-year resolution pollen record over the past 284 000 years from Lake F{\'u}quene (5° N) in Colombia. This record shows rapid and extreme MAT changes at 2540 m elevation of up to 10 ± 2 °C within a few hundred of years that concur with the ~100 and 41-kyr (obliquity) paced glacial cycles and North Atlantic abrupt climatic events as documented in ice cores and marine sediments. Using transient climate modelling experiments we demonstrate that insolation-controlled ice volume and greenhouse gasses are the major forcing agents causing the orbital MAT changes, but that the model simulations significantly underestimate changes in lapse rates and local hydrology and vegetation feedbacks within the studied region due to its low spatial resolution.",

author = "Groot, {M. H. M.} and Bogot{\'a}, {R. G.} and Lourens, {L. J.} and H. Hooghiemstra and M. Vriend and Berrio, {J. C.} and E. Tuenter and {van der Plicht}, J. and {van Geel}, B. and M. Ziegler and Weber, {S. L.} and A. Betancourt and L. Contreras and S. Gaviria and C. Giraldo and N. Gonz{\'a}lez and Jansen, {J. H. F.} and M. Konert and D. Ortega and O. Rangel and G. Sarmiento and J. Vandenberghe and {van der Hammen}, T. and {van der Linden}, M. and W. Westerhoff",

year = "2010",

month = oct,

doi = "10.5194/cpd-6-2117-2010",

language = "English",

volume = "6",

pages = "2117--2158",

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Groot, MHM, Bogotá, RG, Lourens, LJ, Hooghiemstra, H, Vriend, M, Berrio, JC, Tuenter, E, van der Plicht, J, van Geel, B, Ziegler, M, Weber, SL, Betancourt, A, Contreras, L, Gaviria, S, Giraldo, C, González, N, Jansen, JHF, Konert, M, Ortega, D, Rangel, O, Sarmiento, G, Vandenberghe, J, van der Hammen, T, van der Linden, M & Westerhoff, W 2010 'Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles' 5 edn, pp. 2117-2158. https://doi.org/10.5194/cpd-6-2117-2010

TY - UNPB

T1 - Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles

AU - Groot, M. H. M.

AU - Bogotá, R. G.

AU - Lourens, L. J.

AU - Hooghiemstra, H.

AU - Vriend, M.

AU - Berrio, J. C.

AU - Tuenter, E.

AU - van der Plicht, J.

AU - van Geel, B.

AU - Ziegler, M.

AU - Weber, S. L.

AU - Betancourt, A.

AU - Contreras, L.

AU - Gaviria, S.

AU - Giraldo, C.

AU - González, N.

AU - Jansen, J. H. F.

AU - Konert, M.

AU - Ortega, D.

AU - Rangel, O.

AU - Sarmiento, G.

AU - Vandenberghe, J.

AU - van der Hammen, T.

AU - van der Linden, M.

AU - Westerhoff, W.

PY - 2010/10

Y1 - 2010/10

N2 - Tropical montane biome migration patterns in the northern Andes are found to be coupled to glacial-induced mean annual temperature (MAT) changes; however, the accuracy and resolution of current records are insufficient to fully explore their magnitude and rates of change. Here we present a ~60-year resolution pollen record over the past 284 000 years from Lake Fúquene (5° N) in Colombia. This record shows rapid and extreme MAT changes at 2540 m elevation of up to 10 ± 2 °C within a few hundred of years that concur with the ~100 and 41-kyr (obliquity) paced glacial cycles and North Atlantic abrupt climatic events as documented in ice cores and marine sediments. Using transient climate modelling experiments we demonstrate that insolation-controlled ice volume and greenhouse gasses are the major forcing agents causing the orbital MAT changes, but that the model simulations significantly underestimate changes in lapse rates and local hydrology and vegetation feedbacks within the studied region due to its low spatial resolution.

AB - Tropical montane biome migration patterns in the northern Andes are found to be coupled to glacial-induced mean annual temperature (MAT) changes; however, the accuracy and resolution of current records are insufficient to fully explore their magnitude and rates of change. Here we present a ~60-year resolution pollen record over the past 284 000 years from Lake Fúquene (5° N) in Colombia. This record shows rapid and extreme MAT changes at 2540 m elevation of up to 10 ± 2 °C within a few hundred of years that concur with the ~100 and 41-kyr (obliquity) paced glacial cycles and North Atlantic abrupt climatic events as documented in ice cores and marine sediments. Using transient climate modelling experiments we demonstrate that insolation-controlled ice volume and greenhouse gasses are the major forcing agents causing the orbital MAT changes, but that the model simulations significantly underestimate changes in lapse rates and local hydrology and vegetation feedbacks within the studied region due to its low spatial resolution.

U2 - 10.5194/cpd-6-2117-2010

DO - 10.5194/cpd-6-2117-2010

M3 - Discussion paper

VL - 6

SP - 2117

EP - 2158

BT - Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles

ER -

Rapid shifts in South American montane climates driven by pCO2 and ice volume changes over the last two glacial cycles

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