Feedback and Sensitivity in Climate Alain Lahellec June 17, 2009 - - PowerPoint PPT Presentation

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Feedback and Sensitivity in Climate

Alain Lahellec June 17, 2009

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

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0.5 1 1.5 2 Rep Eff log(t y), f(x)=365*10

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ClimSI : Comparaison entre Reponses efficaces Tau prec 3m. Oc Bk Tau 28j.

• 0.013804*(exp(-9.75776E-02*f(x))-1)-0.641613*(exp(-1.22354E-03*f(x))-1)-5.348124E-03*(exp(-0.1188725*f(x))-1)+0.4444444*(exp(-1.1813E-02*f(x))-1)

"/data/al1/Pablo/cyclsta/sigma.datacysta" u (log10($1/365)):58 "/data/al1/Pablo/ocblok/sigma.data" u (log10($1/365)):58 "sigma.data" u (log10($1/365)):58

Figure: ClimSI WV feedback model responses.

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection

university-logo Boundary layer processes in climate Approaches to the parametrization of the boundary layer Boundary layer, clouds and convection

Outline

1

Boundary layer processes in climate Boundary layer as a boundary condition Boundary layer and clouds Boundary layer in the "Earth Systemp"

2

Approaches to the parametrization of the boundary layer Scale decomposition Diffusive approaches and their limitations Alternatives to diffusive approaches

3

Boundary layer, clouds and convection Could schemes in climate models Cumulus clouds and mass flux parametrisations Boundary layer and deep convection