Articles | Volume 21, issue 9
https://doi.org/10.5194/cp-21-1553-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-1553-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Sep 2025
Research article |
| 08 Sep 2025
| 08 Sep 2025
Tropical temperature evolution across two glacial cycles derived from speleothem fluid inclusion microthermometry
Yves Krüger
CORRESPONDING AUTHOR
Department of Earth Science, University of Bergen, Bergen, Norway
Leonardo Pasqualetto
Department of Earth Science, University of Bergen, Bergen, Norway
Alvaro Fernandez
Andalusian Institute of Earth Sciences, CSIC-University of Granada, Granada, Spain
Kim M. Cobb
Institute at Brown for Environment and Society, Department of Earth, Environmental & Planetary Sciences, Brown University, Providence, RI, USA
A. Nele Meckler
Department of Earth Science, University of Bergen, Bergen, Norway
Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway
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Cited articles
Affek, H. P., Bar-Matthews, M., Ayalon, A., Matthews, A., and Eiler, J. M.: Glacial/ interglacial temperature variations in Soreq cave speleothems as recorded by `clumped isotope' thermometry, Geochim. Cosmochim. Ac., 72, 5351e5360, https://doi.org/10.1016/j.gca.2008.06.031, 2008.
Affolter, S., Fleitmann, D., and Leuenberger, M.: New online method for water isotope analysis of speleothem fluid inclusions using laser absorption spectroscopy (WS-CRDS), Clim. Past, 10, 1291–1304, https://doi.org/10.5194/cp-10-1291-2014, 2014.
Badino, G.: Cave temperatures and global climate change, Int. J. Speleol., 33, 103–114, https://doi.org/10.5038/1827-806X.33.1.10, 2004.
Badino, G.: Underground meteorology – “What's the weather underground?” Acta Carsologica, 39, 427–448, https://doi.org/10.3986/ac.v39i3.74 , 2010.
Baker, A., Blyth, A. J., Jex, C. N., Mcdonald, J. A., Woltering, M., and Khan, S. J.: Glycerol dialkyl glycerol tetraethers (GDGT) distributions from soil to cave: Refining the speleothem paleothermometer, Org. Geochem., 136, 103890, https://doi.org/10.1016/j.orggeochem.2019.06.011, 2019.
Bazin, L., Landais, A., Lemieux-Dudon, B., Toyé Mahamadou Kele, H., Veres, D., Parrenin, F., Martinerie, P., Ritz, C., Capron, E., Lipenkov, V., Loutre, M.-F., Raynaud, D., Vinther, B., Svensson, A., Rasmussen, S. O., Severi, M., Blunier, T., Leuenberger, M., Fischer, H., Masson-Delmotte, V., Chappellaz, J., and Wolff, E.: An optimized multi-proxy, multi-site Antarctic ice and gas orbital chronology (AICC2012): 120–800 ka, Clim. Past, 9, 1715–1731, https://doi.org/10.5194/cp-9-1715-2013, 2013.
Bereiter, B., Eggleston, S., Schmitt, J., Nehrbass-Ahles, C., Stocker, T.F., Fischer, H., Kipfstuhl, S., and Chappellaz, J.: Revision of the EPICA Dome C CO2 record from 800 to 600kyr before present, Geophys. Res. Lett., 42, 542–549, https://doi.org/10.1002/2014GL061957, 2015.
Bintanja, R., van de Wal, R. S. W., and Oerlemans, J.: Modelled atmospheric temperatures and global sea levels over the past million years, Nature, 43, 125–128, https://doi.org/10.1038/nature03975, 2005.
Bova, S., Rosenthal, Y., Liu, Z., Godad, S. P., and Yan, M.: Seasonal origin of the thermal maxima at the Holocene and the last interglacial, Nature, 589, 548–553, https://doi.org/10.1038/s41586-020-03155-x, 2021.
Broecker, W. S.: Paleocean circulation during the last deglaciation: A bipolar seesaw?, Paleoceanography, 13, 119–121, https://doi.org/10.1029/97PA03707, 1998.
Buckingham, F. L., Carolin, S. A., Partin, J. W., Adkins, J. F., Cobb, K. M., Day, C. C., Ding, Q., He, C., Liu, Z., Otto-Bliesner, B., Roberts, W. H. G., Lejau, S., and Malang, J.: Termination 1 Millennial-scale Rainfall Events over the Sunda Shelf, Geophys. Res. Lett., 49, e2021GL096937, https://doi.org/10.1029/2021GL096937, 2022.
Cheng, H., Edwards, R. L., Sinha, A., Spötl, C., Yi, L., Chen, S., Kelly, M., Kathayat, G., Wang, X., Li, X., Kong, X., Wang, Y., Ning, Y., and Zhang, H.: The Asian monsoon over the past 640,000 years and ice age terminations, Nature, 534, 640–646, https://doi.org/10.1038/nature18591, 2016.
Croux, C. and Rousseeuw, P. J.: Time-Efficient Algorithms for Two Highly Robust Estimators of Scale, in: Computational Statistics, Volume 1, edited by: Dodge, Y., and Whittaker, J., Heidelberg, Physika-Verlag, 411–428, https://doi.org/10.1007/978-3-662-26811-7_58, 1992.
de Garidel-Thoron, T., Rosenthal, Y., Bassinot, F., and Beaufort, L.: Stable sea surface temperatures in the western Pacific warm pool over the past 1.75 million years, Nature, 433, 294–298, https://doi.org/10.1038/nature03189, 2005.
Dominguez-Villar, D., Krklec, K., López-Sáezb, J. A., and Sierro, F. J.: Thermal impact of Heinrich stadials in cave temperature and speleothem oxygen isotope records, Quaternary Res., 101, 37–50, https://doi.org/10.1017/qua.2020.99 , 2020.
Fall, A., Rimstidt, J., and Bodnar, R.: The effect of fluid inclusion size on determination of homogenization temperature and density of liquid-rich aqueous inclusions, Am. Mineral., 94, 1569–1579, https://doi.org/10.2138/am.2009.3186, 2009.
Frisia, S.: Microstratigraphic logging of calcite fabrics in speleothems as tool for palaeoclimate studies, Int. J. Speleol., 44, 1–16, https://doi.org/10.5038/1827-806X.44.1.1, 2015.
Gray, W. R. and Evans, D.: Nonthermal influences on Mg/Ca in planktonic foraminifera: A review of culture studies and application to the last glacial maximum, Paleoceanogr. Paleocl., 34, 306–315, https:// doi.org/10.1029/2018PA003517, 2019.
Hampel, F. R.: The influence curve and its role in robust estimation, J. Am. Stat. Assoc., 69, 383–393, https://doi.org/10.2307/2285666, 1974.
Ho, S. L., and Laepple, T.: Flat meridional temperature gradient in the early Eocene in the subsurface rather than surface ocean, Nat. Geosci., 9, 606–610, https://doi.org/10.1038/ngeo2763, 2016.
Jouzel, J., Masson-Delmotte, V., Cattani, O., Dreyfus, G., Falourd, S., Hofmann, G., Minster, B., Nouet, J., barnola, J. M., Chappellaz, J., Fischer, H., Gallet, J. C., Johnsen, S., Leuenberger, M., Loulergue, l., Luethi, D., Oerter, H., Parrenin, F., Raisbeck, G., Raynaud, D., Schilt, A., Schwander, J., Selmo, E., Souchez, R., Spahni, R., Stauffer, B., Steffensen, J. P., Stenni, B., Stocker, T. F., Tison, J. L., Werner, M., and Wolff, E. W.: Orbital and millennial Antarctic climate variability over the past 800,000 years, Science, 317, 793–796, https://doi.org/10.1126/science.1141038, 2007.
Kendall, A. C. and Broughton, P. L.: Origin of fabrics in speleothems composed of columnar calcite crystals, J. Sediment. Res., 48, 519–538, https://doi.org/10.1306/212f74c3-2b24-11d7-8648000102c1865d, 1978.
Kluge, T., Marx, T., Scholz, D., Niggemann, S., Mangini, A., and Aeschbach-Hertig, W.: A new tool for palaeoclimate reconstruction: noble gas temperatures from fluid inclusions in speleothems, Earth Planet. Sc. Lett., 269, 407e414, https://doi.org/10.1016/j.epsl.2008.02.030, 2008.
Krüger, Y.: Tropical temperature evolution across two glacial cycles derived from speleothem fluid inclusion microthermometry (1.0), Zenodo [data set], https://doi.org/10.5281/zenodo.14864527, 2025.
Krüger, Y., Stoller, P., Ricka, J., and Frenz, M.: Femtosecond lasers in fluid inclusion analysis: overcoming metastable phase states, Eur. J. Mineral., 19, 693–706, https://doi.org/10.1127/0935-1221/2007/0019-1762, 2007.
Krüger, Y., Marti, D., Staub, R. H., Fleitmann, D., and Frenz, M.: Liquid-vapour homogenisation of fluid inclusions in stalagmites: evaluation of a new thermometer for palaeoclimate research, Chem. Geol., 289, 39–47, https://doi.org/10.1016/j.chemgeo.2011.07.009, 2011.
Krüger, Y., Hiltbrunner, B., Luder, A., Fleitmann, D., and Frenz, M.: Novel heating/cooling stage designed for fluid inclusion microthermometry of large stalagmite sections, Chem. Geol., 386, 59–65, https://doi.org/10.1016/j.chemgeo.2014.08.004, 2014.
KNMI Climate Explorer: KNMI Climate Explorer, ERA5 reanalysis [code], https://climexp.knmi.nl, last access: 2 June 2025.
Landais, A., Stenni, B., Masson-Delmotte, V., Jouzel, J., Cauquoin, A., Fourreì, E., Minster, B., Selmo, E., Extier, T., Werner, M., Vimeux, F., Uemura, R., Crotti, I., and Grisart, A.: Interglacial Antarctic–Southern Ocean climate decoupling due to moisture source area shifts, Nat. Geosci., 14, 918–923, https://doi.org/10.1038/s41561-021-00856-4, 2021.
Lisiecki, L. E. and Raymo, M. E.: A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records, Paleoceanography, 20, PA1003, https://doi.org/10.1029/2004PA001071, 2005.
Loomis, S. E., Russell, J. M., Verschure, D., Morrill, C., De Cort, G., Sinninghe Damsté, J. S., Olago, D., Eggermont, H., Street-Perrott, F. A., and Kelly, M. A.: The tropical lapse rate steepened during the Last Glacial Maximum, Sci. Adv., 3, e1600815, https://doi.org/10.1126/sciadv.1600815, 2017.
Løland, M. H., Krüger, Y., Fernandez, A., Buckingham, F., Carolin, S. A., Sodemann, H., Adkins, J. F., Cobb, K. M., and Meckler, A. N.: Evolution of tropical land temperature across the last glacial termination, Nat. Commun., 13, 5158, https://doi.org/10.1038/s41467-022-32712-3, 2022.
Luetscher, M. and Jeannin, P.-Y.: Temperature distribution in karst systems: the role of air and water fluxes, Terra Nova, 16, 344–350, https://doi.org/10.1111/j.1365-3121.2004.00572.x, 2004.
Marti, D., Krüger, Y., Fleitmann, D., Frenz, M., and Ricka, J.: The effect of surface tension on liquid-gas equilibria in isochoric systems and its application to fluid inclusions, Fluid Phase Equilibr., 314, 13–21, https://doi.org/10.1016/j.fluid.2011.08.010, 2012.
Meckler, A. N., Clarkson, M. O., Cobb, K. M., Sodemann, H., and Adkins, J. F.: Interglacial hydroclimate in the tropical West Pacific through the late Pleistocene, Science, 336, 1301–1304, https://doi.org/10.1126/science.1218340, 2012.
Meckler, A. N., Affolter, S., Dublyansky, Y. V., Krüger, Y., Vogel, N., Bernasconi, S. M., Frenz, M., Kipfer, R., Leuenberger, M., Spötl, C., Carolin, S., Cobb, K. M., Moerman, J., Adkins, J. F., and Fleitmann, D.: Glacial-interglacial temperature change in the tropical West Pacific: A comparison of stalagmite-based paleo-thermometers, Quaternary Sci. Rev., 127, 90–116, https://doi.org/10.1016/j.quascirev.2015.06.015, 2015.
Medina-Elizalde, M. and Lea, D. W.: The mid-Pleistocene transition in the tropical Pacific, Science, 310, 1009–1012, https://doi.org/10.1126/science.1115933, 2005.
Morrison, G.: Effect of water on the critical points of carbon dioxide and ethane, J. Phys. Chem., 85, 759–761, https://doi.org/10.1021/j150607a007, 1981.
Nehrbass-Ahles, C., Shin, J., Schmitt, J., Bereiter, B., Joos, F., Schilt, A., Schmidely, L., Silva, L., Teste, G., Grilli, R., Chappella, J., Hodell, D., Fischer, H., and Stocker, T. F.: Abrupt CO2 release to the atmosphere under glacial and early interglacial climate conditions, Science, 369, 1000–1005, https://doi.org/10.1126/science.aay8178, 2020.
Partin, J. W., Cobb, K. M., Adkins, J. F., Clark, B., and Fernandez, D. P: Millennial-scale trends in west Pacific warm pool hydrology since the Last Glacial Maximum, Nature, 449, 452–455, https://doi.org/10.1038/nature06164, 2007
Past Interglacials Working Group of PAGES: Interglacials of the last 800,000 years, Rev. Geophys., 54, 162–219, https://doi.org/10.1002/2015RG000482, 2016.
Pedro, J. B., van Ommen, T. D., Rasmussen, S. O., Morgan, V. I., Chappellaz, J., Moy, A. D., Masson-Delmotte, V., and Delmotte, M.: The last deglaciation: timing the bipolar seesaw, Clim. Past, 7, 671–683, https://doi.org/10.5194/cp-7-671-2011, 2011.
Railsback, L. B., Akers, P. D., Wang, L. X., Holdridge, G. A., and Voarintsoa, N. R.: Layer-bounding surfaces in stalagmites as keys to better paleoclimatological histories and chronologies, Int. J. Speleol., 42, 167–180, https://doi.org/10.5038/1827-806X.42.3.1, 2013.
Schrag, D. P., Adkins, J. F., McIntyre, K., Alexander, J. L., Hodell, D. A., Charles, C. D., and McManus, J. F.: The oxygen isotopic composition of seawater during the Last Glacial Maximum, Quaternary Sci. Rev., 21, 331–342, https://doi.org/10.1016/S0277-3791(01)00110-X, 2002.
Siegenthaler, U., Stocker, T. F., Monnin, E., Luthi, D., Schwander, J., Stauffer, B., Raynaud, D., Barnola, J. M., Fischer, H., Masson-Delmotte, V., and Jouzel, J.: Stable carbon cycle-climate relationship during the late Pleistocene, Science, 310, 1313–1317, https://doi.org/10.1126/science.1120130, 2005.
Shackleton, N. J., Berger, A., and Peltier, W. R.: An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677, T. RSE Earth, 81, 251–261, https://doi.org/10.1017/S0263593300020782, 1990.
Spratt, R. M. and Lisiecki, L. E.: A Late Pleistocene sea level stack, Clim. Past, 12, 1079–1092, https://doi.org/10.5194/cp-12-1079-2016, 2016.
Tachikawa, K., Timmermann, A., Vidal, L., Sonzogni, C., and Timm, O. E.: CO2 radiative forcing and Intertropical Convergence Zone influences on western Pacific warm pool climate over the past 400 ka, Quaternary Sci. Rev., 86, 24–34, https://doi.org/10.1016/j.quascirev.2013.12.018, 2014.
Tremaine, D. M., Froelich, P. N., and Wang, Y.: Speleothem calcite farmed in situ: modern calibration of δ18O and δ13C paleoclimate proxies in a continuously-monitored natural cave system, Geochim. Cosmochim. Ac., 75, 4929–4950, https://doi.org/10.1016/j.gca.2011.06.005, 2011.
Tripati, A. K. Sahany, S., Pittman, D., Eagle, R. A., Neelin, J. D., Mitchell, J. L., and Beaufort, L.: Modern and glacial tropical snowlines controlled by sea surface temperature and atmospheric mixing, Nat. Geosci., 7, 205–209, https://doi.org/10.1038/ngeo2082, 2014.
Tzedakis, P. C., Hodell, D. A., Nehrbass-Ahles, C., Mitsui, T., and Wolff, E. W.: Marine Isotope Stage 11c: An unusual interglacial, Quaternary Sci. Rev., 284, 107493, https://doi.org/10.1016/j.quascirev.2022.107493, 2022.
Vázquez Riveiros, N., Waelbroeck, C., Skinner, L., Duplessy, J.-C., McManus, J. F., Kandiano, E. S., and Bauch, H. A.: The “MIS 11 paradox” and ocean circulation: role of millennial scale events, Earth Planet. Sc. Lett., 371–372, 258–268, https://doi.org/10.1016/j.epsl.2013.03.036, 2013.
Veres, D., Bazin, L., Landais, A., Toyé Mahamadou Kele, H., Lemieux-Dudon, B., Parrenin, F., Martinerie, P., Blayo, E., Blunier, T., Capron, E., Chappellaz, J., Rasmussen, S. O., Severi, M., Svensson, A., Vinther, B., and Wolff, E. W.: The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years, Clim. Past, 9, 1733–1748, https://doi.org/10.5194/cp-9-1733-2013, 2013.
Wagner, W. and Pruß, A.: The IAPWS formulation 1995 for the thermodynamic properties of ordinary water substance for general and scientific use, J. Phys. Chem. Ref. Data, 31, 387–535, https://doi.org/10.1063/1.1461829, 2002.
Short summary
Using a stalagmite from Whiterock Cave (Gunung Mulu National Park, Northern Borneo), covering the time interval from 460000 to 333000 years B.P., including two glacial terminations, we employed nucleation-assisted fluid inclusion microthermometry to reconstruct a tropical cave temperature record. The record reveals an amplitude of glacial-interglacial temperature changes of 4.2 °C and a strong linear correlation with Antarctic temperature anomalies, yielding a polar amplification factor of 2.3.
Using a stalagmite from Whiterock Cave (Gunung Mulu National Park, Northern Borneo), covering...
