Publications by authors named "T Laepple"
Article Synopsis
- Global climatic changes will lead to significant vegetation disturbances, affecting ecosystem services, requiring a better understanding of natural vegetation variability over long timescales.
- Researchers analyzed a global fossil pollen dataset to characterize vegetation changes during the Holocene using statistical methods, revealing notable fluctuations in vegetation composition from shorter to longer timescales.
- The study found that open-land vegetation exhibits greater variability than forests, with needleleaf forests showing more variability in the short term while broadleaf forests stabilize over millennial timescales, likely influenced by fire regimes.
Article Synopsis
- Changes in regional temperature significantly affect society, but we lack a clear understanding of long-term natural variability and its origins, particularly in terrestrial temperatures.
- By analyzing sedimentary pollen records and instrumental data over 8,000 years, we estimate regional temperature variability across different timescales, revealing that ocean-driven climate patterns dominate long-term changes.
- This research suggests that marine-influenced regions experience more significant long-term climate variability, while continental areas show the opposite, offering insights into the mechanisms that drive temperature fluctuations over centuries.
The Greenland Ice Sheet has a central role in the global climate system owing to its size, radiative effects and freshwater storage, and as a potential tipping point. Weather stations show that the coastal regions are warming, but the imprint of global warming in the central part of the ice sheet is unclear, owing to missing long-term observations. Current ice-core-based temperature reconstructions are ambiguous with respect to isolating global warming signatures from natural variability, because they are too noisy and do not include the most recent decades.
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