2013 AMS Annual Meeting


Aerosol-Cloud Interactions in Weather Forecasting

In this session, the annual meeting theme of improving the predictability is linked to questioning the extent to which knowledge of aerosols can add to the prediction skill at all scales. Recent findings show that radiative impacts of heavy aerosols can stabilize the lower troposphere and lower the surface temperatures, reduce winds and suppress the formation of convective clouds. The microphysical effects of aerosols can redistribute the precipitation in time and space, affect the self-organization of convective clouds into squall lines and super-cells, and hence modulate the intensity and phenomena of severe convective storms and tropical cyclones. On a regional scale aerosols can modulate the circulation systems by their direct and cloud-mediated effects, and hence modify weather and climate, when integrated over climatic time scales. The emerging awareness to the sensitivities of weather to aerosols means that predictions might be improved when including aerosol-cloud interactions in the numerical weather predictions. We are seeking papers that include quantification of the sensitivity of numerical weather predictions and their accuracy to the incorporation of aerosol-cloud interactions, parameterization of aerosol effects in the operational models, and the observed weather modification evidence. The scales can be from the single cloud cluster, trough synoptic scale systems, to global.

Host Conference(s)

19th Conference on Planned and Inadvertent Weather Modification
Contact(s): Daniel Rosenfeld,

Partnering Conference(s)

5th Symposium on Aerosol-Cloud-Climate Interactions
Contact(s): Jiwen Fan,


Full Version