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The dynamics of warming during the last deglaciation in high-elevation regions of Eastern Equatorial Africa

https://doi.org/10.1016/j.quascirev.2022.107416

Garelick, Sloane; Russell, James; Richards, Adin; Smith, Jamila; Kelly, Meredith; Anderson, Nathan; Jackson, Margaret S.; Doughty, Alice; Nakileza, Bob; Ivory, Sarah; et al (April 2022, Quaternary Science Reviews)

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Atmospheric controls on precipitation isotopes and hydroclimate in high-elevation regions in Eastern Africa since the Last Glacial Maximum

https://doi.org/10.1016/j.epsl.2021.116984

Garelick, Sloane; Russell, James M.; Dee, Sylvia; Verschuren, Dirk; Olago, Daniel O. (August 2021, Earth and Planetary Science Letters)
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Glacial fluctuations in tropical Africa during the last glacial termination and implications for tropical climate following the Last Glacial Maximum

https://doi.org/10.1016/j.quascirev.2020.106455

Jackson, M.S.; Kelly, M.A.; Russell, J.M.; Doughty, A.M.; Howley, J.A.; Chipman, J.W.; Cavagnaro, D.A.; Baber, M.B.; Zimmerman, S.R.H.; Nakileza, B. (September 2020, Quaternary Science Reviews)

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High-latitude warming initiated the onset of the last deglaciation in the tropics

https://doi.org/10.1126/sciadv.aaw2610

Jackson, Margaret S.; Kelly, Meredith A.; Russell, James M.; Doughty, Alice M.; Howley, Jennifer A.; Chipman, Jonathan W.; Cavagnaro, David; Nakileza, Bob; Zimmerman, Susan R. (December 2019, Science Advances)

Atmospheric greenhouse gas concentrations are thought to have synchronized global temperatures during Pleistocene glacial–interglacial cycles, yet their impact relative to changes in high-latitude insolation and ice-sheet extent remains poorly constrained. Here, we use tropical glacial fluctuations to assess the timing of low-latitude temperature changes relative to global climate forcings. We report 10 Be ages of moraines in tropical East Africa and South America and show that glaciers reached their maxima at ~29 to 20 ka, during the global Last Glacial Maximum. Tropical glacial recession was underway by 20 ka, before the rapid CO 2 rise at ~18.2 ka. This “early” tropical warming was influenced by rising high-latitude insolation and coincident ice-sheet recession in both polar regions, which lowered the meridional thermal gradient and reduced tropical heat export to the high latitudes.
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