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Prof.dr.ir. Herman Russchenberg WCC 4: Clouds and climate change CTB3300WCx: Introduc2on to Water and Climate

WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

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Page 1: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Prof.dr.ir.  Herman  Russchenberg  

WCC  4:  Clouds  and  climate  change  

CTB3300WCx:  Introduc2on  to  Water  and  Climate  

Page 2: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Release  of  latent  heat  

Cloud  forming  

Condensa2on  level  

Height  

A

B

C

Parcel  with  air  and  water  vapour  

Page 3: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Clustering  

H2O  

Cluster  of  water    molecules  

Water  molecule  Cannot  enter  the  cluster  

H2O   H2O  

H2O  

H2O  H2O   H2O  

H2O  

H2O  

Page 4: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Aerosols  

Aerosol  

H2O   H2O  

H2O  

H2O  

H2O  

H2O  

Page 5: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

A  bit  more  on  cloud  forma;on  

No  aerosols   A  few  aerosols   Many  aerosols  

Clouds  

Condensa8on  level  

Moist  air  parcels  

Page 6: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Aerosol-­‐cloud  interac;ons  

More  aerosols  !  Delayed  rainfall   !  Longer  cloud    life8me  

!  Sustained  impact    on  radia8on  

Page 7: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Global  warming:  state  of  the  art  

Response  of    the  earth  

Addi2o

nal  w

arming  

Direct  warming    due  to  CO2  

Radia5ve  effects  

Water  vapor  feedback  

Surface  albedo  feedback  

Cloud  feedback  

Page 8: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Global  warming,  cloud  response  

Page 9: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate
Page 10: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

How  to  solve  this  problem?  

Models   Observa2ons  

Page 11: WCC4:Cloudsandclimatechangedelftxdownloads.tudelft.nl/CTB3300WCx-Water-Climate/Week 4/CTB3300WCx...Prof.dr.ir.(Herman(Russchenberg(WCC4:Cloudsandclimatechange CTB3300WCx:)Introducon)to)Water)and)Climate

Prof.dr.ir.  Herman  Russchenberg  

WCC  4:  Clouds  and  climate  change  

CTB3300WCx:  Introduc2on  to  Water  and  Climate