Browse by Current Cardiff authors

Barker, Stephen, Knorr, Gregor, Conn, Stephen, Lordsmith, Sian, Newman, Dhobasheni and Thornalley, David 2019. Early interglacial legacy of deglacial climate instability. Paleoceanography and Paleoclimatology 34 (8) , pp. 1455-1475. 10.1029/2019PA003661 Item availability restricted.

Wilson, Jamie D., Barker, Stephen, Edwards, Neil R., Holden, Philip B. and Ridgwell, Andy 2019. Sensitivity of atmospheric CO2 to regional variability in particulate organic matter remineralization depths. Biogeosciences 16 (14) , pp. 2923-2936. 10.5194/bg-16-2923-2019

Menking, James A., Brook, Edward J., Shackleton, Sarah A., Severinghaus, Jeffrey P., Dyonisius, Michael, Petrenko, Vasilii, McConnell, Joseph R., Rhodes, Rachael H., Bauska, Thomas K., Baggenstos, Daniel, Marcott, Shaun and Barker, Stephen 2019. Spatial pattern of accumulation at Taylor Dome during the last glacial inception: stratigraphic constraints from Taylor Glacier. Climate of the Past Discussions 15 , pp. 1537-1556. 10.5194/cp-2018-53

Menking, James A., Brook, Edward J., Shackleton, Sarah A., Severinghaus, Jeffrey P., Dyonisius, Michael N., Petrenko, Vasilii, McConnell, Joseph R., Rhodes, Rachael H., Bauska, Thomas K., Baggenstos, Daniel, Marcott, Shaun and Barker, Stephen 2019. Spatial pattern of accumulation at Taylor Dome during Marine Isotope Stage 4: stratigraphic constraints from Taylor Glacier. Climate of the Past 15 (4) , pp. 1537-1556. 10.5194/cp-15-1537-2019

Wilson, Jamie D., Barker, Stephen, Edwards, Neil R., Holden, Philip B. and Ridgwell, Andy 2019. Sensitivity of atmospheric CO2 to regional variability in particulate organic matter re-mineralization depths. Biogeosciences Discussions 16 , pp. 2923-2936. 10.5194/bg-16-2923-2019

Barker, Stephen 2019. A tribute to Wally Broecker. Eos, Transactions American Geophysical Union 100 10.1029/2019EO121001

Boscolo-Galazzo, Flavia, Crichton, Katherine A., Barker, Stephen and Pearson, Paul N. 2018. Temperature dependency of metabolic rates in the upper ocean: A positive feedback to global climate change? Global and Planetary Change 170 , pp. 201-212. 10.1016/j.gloplacha.2018.08.017

Tangunan, Deborah N., Baumann, Karl-Heinz, Just, Janna, LeVay, Leah J., Barker, Stephen, Brentegani, Luna, De Vleeschouwer, David, Hall, Ian R., Hemming, Sidney and Norris, Richard 2018. The last 1 million years of the extinct genus Discoaster: Plio–Pleistocene environment and productivity at Site U1476 (Mozambique Channel). Palaeogeography, Palaeoclimatology, Palaeoecology 505 , pp. 187-197. 10.1016/j.palaeo.2018.05.043

Hodell, D.A., Greaves, M.J., McCave, I.N. and Barker, S. 2018. Chemistry of oceans past and present: a special issue in tribute to Harry Elderfield, FRS (1943-2016). Geochimica et Cosmochimica Acta 236 , pp. 1-4. 10.1016/j.gca.2018.06.001

Köhler, Peter, Knorr, Gregor, Stap, Lennert B., Ganoposlky, Andrey, de Boer, Bas, van de Wal, Roderik S. W., Barker, Stephen and Rüpke, Lars H. 2018. The effect of obliquity-driven changes on paleoclimate sensitivity during the late Pleistocene. Geophysical Research Letters 45 (13) , pp. 6661-6671. 10.1029/2018GL077717

Pedro, Joel B., Jochum, Markus, Buizert, Christo, He, Feng, Barker, Stephen and Rasmussen, Sune O. 2018. Beyond the bipolar seesaw: toward a process understanding of interhemispheric coupling. Quaternary Science Reviews 192 , pp. 27-46. 10.1016/j.quascirev.2018.05.005

Hasenclever, Jörg, Knorr, Gregor, Rüpke, Lars H., Köhler, Peter, Morgan, Jason, Garofalo, Kristin, Barker, Stephen, Lohmann, Gerrit and Hall, Ian R. 2017. Sea level fall during glaciation stabilized atmospheric CO2 by enhanced volcanic degassing. Nature Communications 8 , 15867. 10.1038/ncomms15867

Zhang, Xu, Knorr, Gregor, Lohmann, Gerrit and Barker, Stephen 2017. Abrupt North Atlantic circulation changes in response to gradual CO2 forcing in a glacial climate state. Nature Geoscience 10 , pp. 518-523. 10.1038/ngeo2974

Deaney, Emily L, Barker, Stephen and Van de Flierdt, Tina 2017. Timing and nature of AMOC recovery across Termination 2 and magnitude of deglacial CO2 change. Nature Communications 8 , 14595. 10.1038/NCOMMS14595

Barker, Stephen and Knorr, Gregor 2016. A paleo-perspective on the AMOC as a tipping element. PAGES Magazine 24 (1) , pp. 14-15.

Diz, Paula and Barker, Stephen 2016. Approaches and constraints to the reconstruction of palaeoproductivity from Cape Basin abyssal benthic foraminifera (South Atlantic). Journal of Micropalaeontology 35 , pp. 195-204. 10.1144/jmpaleo2015-045

Yu, J., Menviel, L., Jin, Z. D., Thornalley, D. J. R., Barker, Stephen, Marino, G., Rohling, E. J., Cai, Y., Zhang, F., Wang, X., Dai, Y., Chen, P. and Broecker, W. S. 2016. Sequestration of carbon in the deep Atlantic during the last glaciation. Nature Geoscience 9 (4) , pp. 319-324. 10.1038/ngeo2657

Hoogakker, B. A. A., Thornalley, D. J. R. and Barker, Stephen 2016. Millennial changes in North Atlantic oxygen concentrations. Biogeosciences 13 (1) , pp. 211-221. 10.5194/bg-13-211-2016

Hoogakker, B. A. A., Thornalley, D. J. R. and Barker, Stephen 2016. Millennial changes in North Atlantic oxygen concentrations. Biogeosciences Discussions 12 (15) , pp. 12947-12973. 10.5194/bgd-12-12947-2015

Barker, Stephen 2016. Dissolution of deep-sea carbonates. In: Elias, Scott A. ed. Reference Module in Earth Systems and Environmental Sciences, Elsevier, (10.1016/B978-0-12-409548-9.09717-7)

Simon, Margit H., Ziegler, Martin, Bosmans, Joyce, Barker, Stephen, Reason, Chris J.C. and Hall, Ian Robert 2015. Eastern South African hydroclimate over the past 270,000 years. Scientific Reports 5 , p. 18153. 10.1038/srep18153

Jonkers, Lukas, Barker, Stephen, Hall, Ian Richard and Prins, Maarten 2015. Correcting for the influence of ice-rafted detritus on grain size-based paleocurrent speed estimates. Paleoceanography 30 (10) , pp. 1347-1357. 10.1002/2015PA002830

Simon, Margit H., Gong, Xun, Hall, Ian Robert, Ziegler, Martin, Barker, Stephen, Knorr, Gregor, van der Meer, Marcel T. J., Kasper, Sebastian and Schouten, Stefan 2015. Salt exchange in the Indian-Atlantic Ocean Gateway since the LGM: A compensating effect between Agulhas Current changes and salinity variations? Paleoceanography 30 (10) 10.1002/2015PA002842

Wilson, Jamie D., Ridgwell, A. and Barker, Stephen 2015. Can organic matter flux profiles be diagnosed using remineralisation rates derived from observed tracers and modelled ocean transport rates? Biogeosciences Discussions 12 (6) , pp. 4557-4593. 10.5194/bgd-12-4557-2015

Wilson, J. D., Ridgwell, A. and Barker, Stephen 2015. Can organic matter flux profiles be diagnosed using remineralisation rates derived from observed tracers and modelled ocean transport rates? Biogeosciences 12 (18) , pp. 5547-5562. 10.5194/bg-12-5547-2015

Moffa-Sanchez, Paola, Hall, Ian Robert, Thornalley, David J.R., Barker, Stephen and Stewart, Connor 2015. Changes in the strength of the Nordic Seas Overflows over the past 3000 years. Quaternary Science Reviews 123 , pp. 134-143. 10.1016/j.quascirev.2015.06.007

Thornalley, D. J. R., Bauch, H. A., Gebbie, G., Guo, W., Ziegler, M., Bernasconi, S. M., Barker, Stephen, Skinner, L. C. and Yu, J. 2015. A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period. Science 349 (6249) , pp. 706-710. 10.1126/science.aaa9554

Diz, Paula and Barker, Stephen 2015. Linkages between rapid climate variability and deep-sea benthic foraminifera in the deep Subantarctic South Atlantic during the last 95 kyr. Paleoceanography 30 (6) , pp. 601-611. 10.1002/2015PA002784

Barker, Stephen, Chen, James, Gong, Xun, Jonkers, Lukas, Knorr, Gregor and Thornalley, David 2015. Icebergs not the trigger for North Atlantic cold events. Nature 520 (7547) , pp. 333-336. 10.1038/nature14330

Schaefer, Joerg M., Putnam, Aaron E., Denton, George H., Kaplan, Michael R., Birkel, Sean, Doughty, Alice M., Kelley, Sam, Barrell, David J.A., Finkel, Robert C., Winckler, Gisela, Anderson, Robert F., Ninneman, Ulysses S., Barker, Stephen, Schwartz, Roseanne, Andersen, Bjorn G. and Schluechter, Christian 2015. The Southern Glacial Maximum 65,000 years ago and its unfinished termination. Quaternary Science Reviews 114 , pp. 52-60. 10.1016/j.quascirev.2015.02.009

Anderson, Robert F., Barker, Stephen, Fleisher, Martin, Gersonde, Rainer, Goldstein, Steven L., Kuhn, Gerhard, Mortyn, P. Graham, Pahnke, Katharina and Sachs, Julian P. 2014. Biological response to millennial variability of dust and nutrient supply in the Subantarctic South Atlantic Ocean. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 (2019) , 20130054. 10.1098/rsta.2013.0054

Barker, Stephen and Diz, Paula 2014. Timing of the descent into the last ice age determined by the bipolar seesaw. Paleoceanography 29 (6) , pp. 489-507. 10.1002/2014PA002623

Moffa Sanchez, Paola, Born, Andreas, Hall, Ian, Thornalley, David J.R. and Barker, Stephen 2014. Solar forcing of North Atlantic surface temperature and salinity over the last millennium [Letter]. Nature Geoscience 7 , pp. 275-278. 10.1038/ngeo2094

Moffa Sanchez, Paola, Hall, Ian Robert, Barker, Stephen, Thornalley, David J. R. and Yashayaev, Igor 2014. Surface changes in the Eastern Labrador Sea around the onset of the Little Ice Age. Paleoceanography and Paleoclimatology 29 (3) , pp. 160-175. 10.1002/2013PA002523

Simon, Margit H., Arthur, Kristina L., Hall, Ian Richard, Peeters, Frank J. C., Loveday, Benjamin R., Barker, Stephen, Ziegler, Martin and Zahn, Rainer 2013. Millennial-scale Agulhas Current variability and its implications for salt-leakage through the Indian-Atlantic Ocean gateway. Earth and Planetary Science Letters 383 , pp. 101-112. 10.1016/j.epsl.2013.09.035

Skinner, L. C., Scrivner, A. E., Vance, D., Barker, Stephen, Fallon, S. and Waelbroeck, C. 2013. North Atlantic versus Southern Ocean contributions to a deglacial surge in deep ocean ventilation. Geology 41 (6) , pp. 667-670. 10.1130/G34133.1

Thornalley, David J. R., Barker, Stephen, Becker, Julia, Hall, Ian Robert and Knorr, Gregor 2013. Abrupt changes in deep Atlantic circulation during the transition to full glacial conditions. Paleoceanography 28 (2) , pp. 253-262. 10.1002/palo.20025

Griffiths, James D., Barker, Stephen, Hendry, Katharine Rosemary, Thornalley, David J. R., van de Flierdt, Tina, Hall, Ian Robert and Anderson, Robert F. 2013. Evidence of silicic acid leakage to the tropical Atlantic via Antarctic intermediate water during marine isotope stage 4. Paleoceanography 28 (2) , pp. 307-318. 10.1002/palo.20030

Ziegler, Martin, Simon, Margit H., Hall, Ian Robert, Barker, Stephen, Stringer, Chris and Zahn, Rainer 2013. Development of Middle Stone Age innovation linked to rapid climate change. Nature Communications 4 , 1905. 10.1038/ncomms2897

Sexton, Philip F. and Barker, Stephen 2012. Onset of 'Pacific-style' deep-sea sedimentary carbonate cycles at the mid-Pleistocene transition. Earth and Planetary Science Letters 321-22 , pp. 81-94. 10.1016/j.epsl.2011.12.043

Honisch, B., Ridgwell, A., Schmidt, D. N., Thomas, E., Gibbs, S. J., Sluijs, A., Zeebe, R., Kump, L., Martindale, R. C., Greene, S. E., Kiessling, W., Ries, J., Zachos, J. C., Royer, D. L., Barker, Stephen, Marchitto, T. M., Moyer, R., Pelejero, C., Ziveri, P., Foster, G. L. and Williams, B. 2012. The Geological Record of Ocean Acidification. Science 335 (6072) , pp. 1058-1063. 10.1126/science.1208277

Parrenin, F., Barker, Stephen, Blunier, T., Chappellaz, J., Jouzel, J., Landais, A., Masson-Delmotte, V., Schwander, J. and Veres, D. 2012. On the gas-ice depth difference (Δdepth) along the EPICA Dome C ice core. Climate of the Past Discussions 8 (2) , pp. 1089-1131. 10.5194/cpd-8-1089-2012

Barker, Stephen and Ridgwell, Andy 2012. Ocean Acidification. Nature Education Knowledge 3 (10) , 21.

Wilson, Jamie D., Barker, Stephen and Ridgwell, A. 2012. Assessment of the spatial variability in particulate organic matter and mineral sinking fluxes in the ocean interior: Implications for the ballast hypothesis. Global Biogeochemical Cycles 26 (4) , GB4011. 10.1029/2012GB004398

Parrenin, F., Barker, Stephen, Blunier, T., Chappellaz, J., Jouzel, J., Landais, A., Masson-Delmotte, V., Schwander, J. and Veres, D. 2012. On the gas-ice depth difference (Δdepth) along the EPICA Dome C ice core. Climate of the Past 8 (4) , pp. 1239-1255. 10.5194/cp-8-1239-2012

Barker, Stephen, Knorr, Gregor, Edwards, R. Lawrence, Parrenin, Frédéric, Putnam, Aaron. E., Skinner, Luke C., Wolff, Eric and Ziegler, Martin 2011. 800,000 years of abrupt climate variability. Science 334 (6054) , pp. 347-351. 10.1126/science.1203580

Thornalley, David J. R., Barker, Stephen, Broecker, Wallace S., Elderfield, Henry and McCave, I. Nick 2011. The deglacial evolution of North Atlantic deep convection. Science 331 (6014) , pp. 202-205. 10.1126/science.1196812

Barker, Stephen, Knorr, Gregor, Vautravers, Maryline J., Diz Ferreiro, Paula and Skinner, Luke C. 2010. Extreme deepening of the Atlantic overturning circulation during deglaciation. Nature Geoscience 3 (8) , pp. 567-571. 10.1038/NGEO921

Skinner, L. C., Fallon, S., Waelbroeck, C., Michel, E. and Barker, Stephen 2010. Ventilation of the deep Southern Ocean and deglacial CO2 rise. Science 328 (5982) , pp. 1147-1151. 10.1126/science.1183627

Elderfield, H., Greaves, M., Barker, Stephen, Hall, Ian Robert, Tripati, A., Ferretti, P., Crowhurst, S., Booth, L. and Daunt, C. 2010. A record of bottom water temperature and seawater δ18O for the Southern Ocean over the past 440 kyr based on Mg/Ca of benthic foraminiferal Uvigerina spp. Quaternary Science Reviews 29 (1-2) , pp. 160-169. 10.1016/j.quascirev.2009.07.013

Hall, Ian Robert, Boessenkool, Karin Petra, Barker, Stephen, McCave, I. N. and Elderfield, H. 2010. Surface and deep ocean coupling in the subpolar North Atlantic during the last 230 years. Paleoceanography 25 (2) , PA2101. 10.1029/2009PA001886

Johnstone, Heather J. H., Schulz, Michael, Barker, Stephen and Elderfield, Henry 2010. Inside story: An X-ray computed tomography method for assessing dissolution in the tests of planktonic foraminifera. Marine Micropaleontology 77 (1-2) , pp. 58-70. 10.1016/j.marmicro.2010.07.004

Barker, Stephen, Diz Ferreiro, Paula, Van De Flierdt, T., Vautravers, M. J., Hall, Ian Robert, Broecker, W. S. and Knorr, Gregor 2009. Enhanced Atlantic Merdional Overturning Circulation during pronounced interstadials. Geochimica Et Cosmochimica Acta 73 (13s) , A90-A90. 10.1016/j.gca.2009.05.002

Barker, Stephen, Diz Ferreiro, Paula, Vautravers, Maryline J., Pike, Jennifer, Knorr, Gregor, Hall, Ian Robert and Broecker, Wallace S. 2009. Interhemispheric Atlantic seesaw response during the last deglaciation. Nature 457 (7233) , pp. 1097-1102. 10.1038/nature07770

Waelbroeck, C., Paul, A., Kucera, M., Rosell-Melé, A., Weinelt, M., Schneider, R., Mix, A. C., Abelmann, A., Armand, L., Bard, E., Barker, Stephen, Barrows, T. T., Benway, H., Cacho, I., Chen, M.-T., Cortijo, E., Crosta, X., de Vernal, A., Dokken, T., Duprat, J., Elderfield, H., Eynaud, F., Gersonde, R., Hayes, A., Henry, M., Hillaire-Marcel, C., Huang, C.-C., Jansen, E., Juggins, S., Kallel, N., Kiefer, T., Kienast, M., Labeyrie, L., Leclaire, H., Londeix, L., Mangin, S., Matthiessen, J., Marret, F., Meland, M., Morey, A. E., Mulitza, S., Pflaumann, U., Pisias, N. G., Radi, T., Rochon, A., Rohling, E. J., Sbaffi, L., Schäfer-Neth, C., Solignac, S., Spero, H., Tachikawa, K. and Turon, J.-L. 2009. Constraints on the magnitude and patterns of ocean cooling at the Last Glacial Maximum. Nature Geoscience 2 (2) , pp. 127-132. 10.1038/ngeo411

Broecker, W., Clark, E. and Barker, Stephen 2008. Near constancy of the Pacific Ocean surface to mid-depth radiocarbon-age difference over the last 20 kyr. Earth and Planetary Science Letters 274 (3-4) , pp. 322-326. 10.1016/j.epsl.2008.07.035

Barker, Stephen, Broecker, W. S. and Clark, E. 2008. A search for the glacial age C-14 depleted ocean reservoir. Geochimica Et Cosmochimica Acta 72 (12s) , A55-A55. 10.1016/j.gca.2008.05.005

Barker, Stephen and Knorr, Gregor 2007. Antarctic climate signature in the Greenland ice core record. Proceedings of the National Academy of Sciences 104 (44) , pp. 17278-17282. 10.1073/pnas.0708494104

Broecker, W., Clark, E., Barker, Stephen, Hajdas, I., Bonani, G. and Moreno, E. 2007. Radiocarbon age of late glacial deep water from the equatorial Pacific. Paleoceanography 22 (2) , PA2206. 10.1029/2006PA001359

Barker, Stephen, Broecker, W., Clark, E. and Hajdas, I. 2007. Radiocarbon age offsets of foraminifera resulting from differential dissolution and fragmentation within the sedimentary bioturbated zone. Paleoceanography 22 (2) , PA2205. 10.1029/2006PA001354

Broecker, W. S. and Barker, Stephen 2007. Reply to comment by L. D. Stott on "Anomalous radiocarbon ages for foraminifera shells": A correction to the western tropical Pacific MD9821-81 record. Paleoceanography 22 (1) , PA1212. 10.1029/2006PA001393

Rickaby, R. E. M., Bard, E., Sonzogni, C., Rostek, F., Beaufort, L., Barker, Stephen, Rees, G. and Schrag, D. P. 2007. Coccolith chemistry reveals secular variations in the global ocean carbon cycle? Earth and Planetary Science Letters 253 (1-2) , pp. 83-95. 10.1016/j.epsl.2006.10.016

Broecker, W. and Barker, Stephen 2007. A 190‰ drop in atmosphere's Δ14C during the “Mystery Interval” (17.5 to 14.5 kyr). Earth and Planetary Science Letters 256 (1-2) , pp. 90-99. 10.1016/j.epsl.2007.01.015

Schiebel, R., Barker, Stephen, Lendt, R., Thomas, H. and Bollmann, J. 2007. Planktic foraminiferal dissolution in the twilight zone. Deep-Sea Research. Part II.Topical studies in oceanography 54 (5-7) , pp. 676-686. 10.1016/j.dsr2.2007.01.009

Barker, Stephen, Archer, David, Booth, Linda, Elderfield, Henry, Henderiks, Jorijntje and Rickaby, Rosalind E.M. 2006. Globally increased pelagic carbonate production during the Mid-Brunhes dissolution interval and the CO2 paradox of MIS 11. Quaternary Science Reviews 25 (23-24) , pp. 3278-3293. 10.1016/j.quascirev.2006.07.018

Broecker, Wallace, Barker, Stephen, Clark, Elizabeth, Hajdas, Irka and Bonani, Georges 2006. Anomalous radiocarbon ages for foraminifera shells. Paleoceanography 21 , PA2008. 10.1029/2005PA001212

Barker, Stephen 2005. The ‘flickering switch’ of late Pleistocene climate change revisited. Geophysical Research Letters 32 (24) , L24703. 10.1029/2005GL024486

Barker, Stephen, Cacho, Isabel, Benway, Heather and Tachikawa, Kazuyo 2005. Planktonic foraminiferal Mg/Ca as a proxy for past oceanic temperatures: a methodological overview and data compilation for the Last Glacial Maximum. Quaternary Science Reviews 24 (7-9) , pp. 821-834. 10.1016/j.quascirev.2004.07.016

Greaves, Mervyn, Barker, Stephen, Daunt, C. and Elderfield, H. 2005. Accuracy, standardization, and interlaboratory calibration standards for foraminiferal Mg/Ca thermometry. Geochemistry Geophysics Geosystems 6 (2) , Q02D13. 10.1029/2004GC000790

Broecker, Wallace, Barker, Stephen, Clark, Elizabeth, Hajdas, Irka, Bonani, Georges and Stott, Lowell 2004. Ventilation of the Glacial deep Pacific Ocean. Science 306 (5699) , pp. 1169-1172. 10.1126/science.1102293

Rosenthal, Yair, Perron-Cashman, S., Lear, Caroline Helen, Bard, E., Barker, Stephen, Billups, K., Bryan, M., Delaney, M. L., deMenocal, P. B., Dwyer, G. S., Elderfield, H., German, C. R., Greaves, M. and Lea, D. W. 2004. Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research. Geochemistry Geophysics Geosystems 5 (4) , Q04D09. 10.1029/2003GC000650

Barker, Stephen, Kiefer, T. and Elderfield, H. 2004. Temporal changes in North Atlantic circulation constrained by planktonic foraminiferal shell weights. Paleoceanography 19 (3) , PA3008. 10.1029/2004PA001004

Barker, Stephen, Greaves, M. and Elderfield, Henry 2003. A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry. Geochemistry Geophysics Geosystems 4 (9) , pp. 1-20. 10.1029/2003GC000559

Barker, Stephen, Higgins, J. A. and Elderfield, H. 2003. The future of the carbon cycle: review, calcification response, ballast and feedback on atmospheric CO2. Philosophical Transactions of the Royal Society of London Series A: Mathematical and Physical Sciences 361 (1810) , pp. 1977-1999. 10.1098/rsta.2003.1238

Barker, Stephen and Elderfield, Henry 2002. Foraminiferal calcification response to glacial-interglacial changes in atmospheric CO2. Science 297 (5582) , pp. 833-836. 10.1126/science.1072815