Objective
The project focuses on parametrization of the sub-grid scale air-sea/air-land turbulent fluxes of heat, momentum and passive scalars for use in climate, weather forecast and other atmospheric models. The overall goal is to fill the gap between modern knowledge on the physical nature of turbulence and the currently employed flux parametrizations.
Speed-up of modern computers has inspired rapidly increasing spatial resolution and accuracy of operational methods. Further progress however is impeded by the lack of flux parametrizations that reflect non-local properties of the planetary boundary layer (PBL) turbulence. The conventional surface-layer similarity theory as well as turbulence closures in operational use are both unable to reproduce non-local transport. As a result the surface fluxes are ill-founded in the conditions of strong convection and strong static stability. The key role in this problem is played by large-scale semi-organized structures, disregarded within the traditional concept of a turbulent flow as composed universally of fully organized (mean) and fully chaotic components.
Advanced theoretical concepts of the PBL turbulence together wuth recent evidence from field measurements and numerical simulation studies provide sufficient basis for better understanding and realistic parametrization of the effects of semi-organized structures on the vertical transport. Modern generation of the climate and weather forecasting models provide convenient tools for incorporation and testing of new modules. In the scope of this project we propose application and further extension of the above recent achievements to the revision of traditional formulations and development of improved flux parametrizations in the interests of atmospheric modelling. This work includes :
a) theoretical analysis of non-local transport properties of atmospheric PBLs and development of improved flux parametrizations for strong convection and strong static stability,
b) vaiidation and refinement of the new theories and flux parametrizations, using data from selected field studies of the atmospheric PBL structure.
c) implementation and validation of new flux parametrizations in global and regional models of climate and weather forecast with emphasis on very high resolution models.
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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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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.
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Funding Scheme
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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.
Coordinator
4000 Roskilde
Denmark
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.