Welcome to VARDA

The Varved Sediments Database (VARDA) provides standardized proxy records from annually resolved lake archives. All proxy records offer full quantification of age-uncertainty from state of the art age-depth modeling routines. VARDA is a service provided by the Helmholtz Centre Potsdam German Research Centre for Geosciences (GFZ) and is funded by the PalMod initiative.

PalMod — Paleo Modeling

PalMod is funded by the German Federal Ministry of Education and Science (BMBF) to examine climate system dynamics and variability during the last glacial cycle. One key aspect is to identify and quantify the relative contributions of the fundamental processes that determined the Earth’s climate trajectory and variability during the last glacial cycle. Using comprehensive Earth System Models (ESM) this consortium aims at simulating the climate from the peak of the last interglacial (the Eemian warm period) up to the present, including its changing variability. The research will assess possible future climate trajectories beyond this century with sophisticated ESMs tested this way.

GFZ — Climate Dynamics and Landscape Evolution

We investigate climate change in the geological and historical past and its impacts on the human habitat as well as past changes in the Earth’s magnetic field. A primary concern of our research are particularly rapid climate changes that occurred within a few years or decades. Therefore, we exploit high-resolution terrestrial geo-archives such as annually laminated (varved) lake sediments and tree rings. A crucial part of our approach is to date our archives precisely and accurately as an important basis for reliable reconstructions of changes in the past.

Latest Updates

Release v1.0.2

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Release v1.0.1

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Release v1.0.0

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