Exploiting the weekly cycle as observed over Europe to analyse aerosol indirect effects in two climate models

Day of maximum and minimum average percent departure from the weekly mean calculated from the spatial analysis (APD) and the corresponding APD values, day of maximum and minimum

The second aerosol indirect e ff ect – the cloud life-time or Albrecht-e ff ect – in- volves aerosol particles altering the cloud macro-structure (Albrecht, 1989; Pincus and

We find that neglecting transport of cloud-borne particles introduces little error, but that diagnosing cloud- borne particles produces global mean biases of 20% and lo- cal errors

Although this study focused only on warm-phase clouds, our findings regarding different cloud responses to aerosol perturbations between GCMs and satellite observations will

The results strengthen the case that the observed increase in cloud top height and cloud fraction associated with higher aerosol loadings in convective clouds over the Atlantic ITCZ

The well- predicted aerosol quantities, such as aerosol number, mass composition and optical properties, and the inclusion of full aerosol-cloud couplings lead to

The number of aerosols that eventually activate into cloud droplets depends on the aerosol concentration, size distribution and chemical properties and on the updraft ve- locity,

We use satellite observations of aerosol optical depth (AOD) from the Moderate Resolution Imaging Spec- trometer (MODIS) together with the GEOS-Chem global chemical transport model