Objective
To study the role of cloud parametrisations in climate models.
Clouds, through the intricate feedback effects they have on the climate system, are responsible for a large part
of the uncertainty affecting the evaluation of future climate change. The present project includes, as a first
stage, a carefully coordinated intercomparison between three climate models.
All models contain a prognostic cloud scheme, and two of the models share the same radiation scheme. Cross
comparisons should therefore be especially meaningful. The detailed response of the models to similar changes
in their cloud parameterisations will be investigated.
The response of the model for present climate conditions to changes in some of the cloud processes will consider
in priority the impact of the vertical overlap assumptions on the radiative fluxes, the distribution of cloud water
within a grid-box, the changes in the precipitation process (water/ice distinction, introduction of microphysical
parameterisations), and the treatment of turbulent fluxes in cloud-topped boundary layers.
The validation of the models will make use of the ISCCP, ERBE and SSMI satellite dat a sets and the
satellite/GCM hybrid data available from the EUCREX project.
Some of these studies will then be repeated in the context of simple climate scenarios using precribed SST
changes (such as 2K change in the SSTs or the use of a more realistic SST scenario obtained from a equilibrium
response of a coupled ocean-atmosphere GCM). The analysis of theses model results will be done through a
detailed comparison of the changes in the main relevant parameters (water vapour, cloudiness, cloud properties,
ground albedo) and through a feedback analysis using a single radiation code to analyse the results of the
different models.
One aim of the analysis will be to determine whether the most sensitive processes or parameters which explain
the spread between the models in the case of climate scenarios, are also active at the seasonal time scale, and
can be validated through satellite measurements.
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.
- engineering and technology mechanical engineering vehicle engineering aerospace engineering satellite technology
- natural sciences earth and related environmental sciences atmospheric sciences climatology climatic changes
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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.
Topic(s)
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.
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.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
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.
Coordinator
91128 PALAISEAU
France
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.