from the Dahl group
Deliberate carbon dioxide removal (CDR) from the atmosphere is necessary to keep globalwarming at safe levels in this century. Enhanced weathering and ocean fertilization are powerfulnatural CDR processes with potentials to counter global warming, but their impact andbiogeochemical consequences upon implementation are uncertain due to limited verification at theglobal scale in the real world. Past … Read More
Current and former group members will be present and are presenting work at the annual Goldschmidt conference in geochemistry, including: Monday July 10, 2023 15:00 Feifei Zhang – Enhanced marine biological carbon pump as a trigger for Early Mississippian marine anoxia and climatic cooling Monday July 10, 2023 17:15 Julius Havsteen – Linking atmospheric oxygenation … Read More
One 2-year postdoc position is opening in our research group at the Globe Institute in collaboration with the Prof. Klaus Mosegaard from Computational Geophysics Group at the Niels Bohr Institute, both University of Copenhagen . Application deadline is March 1, 2023. Recently, core scanning XRF has paved the way for a complete refinement of the … Read More
Early vascular plant fossils tell us about the climate in which early vegetation grew In defense of Plants is a popular podcast (US) about botany and related sciences. In this week, Matt Candeias interviews Tais W. Dahl, who explains how the latest results published in Nature Comms change our understanding of how vegetation on land … Read More
University of Hamburg offers a webinar series on the co-evolution of life and the environment held on Tuesday’s from 16:15-17:00. You may sign up here. On Nov 1, 2022 Tais W. Dahl will give a webinar lecture entitled “The Impact of land colonization on Earth’s Climate and oxygenation state”. Plants evolved in the aquatic realm … Read More
The greatest rise in marine biodiversity in all of Earth’s history surprisingly was not fuelled by ocean oxygenation. Instead, oceanic redox stability appears to have favoured increased ecosystem resilience and – ultimately – a massive rise in global biodiversity levels. Oxygen rise occurred later… PhD student Alvaro del Rey measured the uranium isotope composition of … Read More
July 6th, 2022 @ 17:15. Institut für Pflanzen und Mikrobiologie (IPM) is at Ohnhorststr. 18 in Klein Flottbek, a suburb of Hamburg. Tais will give a lecture for the Institute for Plants and Microbiology (IPM) at Hamburg University entitled: “Atmospheric oxygenation and climatic cooling during the early colonization of the terrestrial environment by plants”. The presentation will … Read More
We have discovered a new method to tell time in the Geological record, using core scanning XRF analyses, which we have now applied to Cambrian and Ordovician rocks to refine the Geological Time Scale. The study, led by my PhD student Zhengfu Zhao, is now published in Nature Communications. The new method was first discovered … Read More
[Croatia Nov 10,2021]: Abiotic aragonite precipitates in the modern seawater-fed lake and provide an opportunity to understand how trace elements gets into the carbonate rock record.
