Articles | Volume 19, issue 23
https://doi.org/10.5194/bg-19-5357-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-5357-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Nov 2022
Research article |
| 30 Nov 2022
| 30 Nov 2022
A Holocene temperature (brGDGT) record from Garba Guracha, a high-altitude lake in Ethiopia
Lucas Bittner
CORRESPONDING AUTHOR
Heisenberg Chair of Physical Geography with focus on paleoenvironmental research, Institute of Geography, Technische Universität Dresden, Dresden, Germany
Cindy De Jonge
Geological Institute, Department of Earth Sciences, ETH Swiss Federal Institute of Technology, 8092 Zurich, Switzerland
Graciela Gil-Romera
Plant Ecology and Geobotany, Philipps University of Marburg, Marburg, Germany
Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology, CSIC, Zaragoza, Spain
Henry F. Lamb
Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, UK
Department of Botany, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
James M. Russell
Department of Geological Sciences, Brown University, Providence, RI, USA
Michael Zech
Heisenberg Chair of Physical Geography with focus on paleoenvironmental research, Institute of Geography, Technische Universität Dresden, Dresden, Germany
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Short summary
With regard to global warming, an understanding of past temperature changes is becoming increasingly important. Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are membrane lipids used globally to reconstruct lake water temperatures. In the Bale Mountains lakes, we find a unique composition of brGDGT isomers. We present a modified local calibration and a new high-altitude temperature reconstruction from the Horn of Africa spanning the last 12.5 kyr.
With regard to global warming, an understanding of past temperature changes is becoming...
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