Project description
Improving temperature reconstructions using tree-ring anatomy
Temperature reconstructions from natural proxies such as ice cores and tree rings reveal significant differences in the temperature histories of the Northern and Southern Hemispheres over the past millennium, in contrast to the agreement seen in climate model simulations. The ERC-funded BOREAUSTRALIS project will test a new tree-ring proxy based on quantitative wood anatomy to refine temperature reconstructions in both hemispheres and address these discrepancies. Using trees growing in extra-tropical regions, the project will revisit volcanic cooling responses in the Southern Hemisphere and assess the consistencies of temperature patterns in the new records. Improved temperature reconstructions are important for assessments of current climate models and will benefit both climate science and historical research.
Objective
According to temperature reconstructions based on natural climate proxy archives (ice cores, lake sediments, tree rings etc.), Northern and Southern Hemisphere (NH, SH) temperature histories differ in important features over the past millennia. This stands in contrast to the broad hemispheric agreement found in corresponding climate model simulations.
I hypothesize that a new tree-ring proxy, based on quantitative wood anatomy, can be used to improve temperature reconstructions in both hemispheres, and by this reduce differences between reconstructions and simulations. Preliminary studies show such results at regional scales in Eurasia, and Hemispheric scale networks based on quantitative wood anatomy are thus expected to confirm my hypothesis. These advances will be novel and highly relevant to communities engaged in climate modelling, climate reconstructions, and human history research.
To test my hypothesis, the project is divided into the following aims:
1. Create Boreal and Austral networks of quantitative wood anatomy data from tree rings from already sampled, as well as newly sampled trees growing in extra-tropical regions.
2. Use the new proxy data to examine volcanic-related responses specifically in the SH, where model simulations and existing proxy reconstructions clearly disagree.
3. Investigate if intra- and inter-hemispheric patterns of long-term temperature changes are more coherent among the new proxy records, and less different from corresponding model simulations.
I am convinced that the results of this project will substantially improve upon the quality of both NH and SH temperature reconstructions, but if improved NH and SH reconstructions remain distinct from corresponding simulations, this may constitute an important basis for revisiting system physics implemented in current climate models. The outcome of these investigations will thus likely challenge conventional wisdom in at least one, and possibly several research communities.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2024-COG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
405 30 Goeteborg
Sweden
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.