AMS Session: From Weather Modification to Climate Intervention: Aerosol Impacts on Clouds Across Scales

[Ehsan Erfani]

Dear Colleagues,

We would like to invite you to submit an abstract to our session at the  Aerosol–Cloud–Climate Interactions Symposium of the 2027 AMS Annual Meeting: "From Weather Modification to Climate Intervention: Aerosol Impacts on Clouds Across Scales" (link here). 

The abstract submission deadline is Tuesday August 11th 11:59 pm EDT (no extensions).

Session description:

Aerosol–cloud interactions (ACI) influence clouds from local precipitation processes to the global energy balance. They underpin long-standing efforts in cloud seeding, represent a major uncertainty in historical anthropogenic radiative forcing, and are central to proposed climate-intervention strategies, including marine cloud brightening (MCB), mixed-phase cloud thinning (MCT), and cirrus cloud thinning (CCT). Progress in all these areas depends on a common challenge: constraining how clouds respond to aerosol perturbations across meteorological regimes, spatial scales, and background aerosol concentrations.

This session invites contributions that advance understanding through satellite, field, and modelling studies on the efficacy of aerosol-driven cloud modifications. Topics include observational (e.g., SNOWIE, CAARE) and modelling studies of deliberate cloud seeding, inadvertent and natural analogues (e.g., ship tracks, contrails, and dust storms), aerosol controls on cloud phase and radiative effects, and regional and global climate responses to aerosol perturbations. The session aims to connect researchers working on operational cloud seeding, aerosol–cloud–climate interactions, and cloud-based climate-intervention approaches to accelerate progress toward a robust understanding of aerosol-mediated cloud modifications across scales.

We have the following confirmed invited presenters:
- Sarah Tessendorf, NCAR
- Diego Villanueva, ETH Zurich

Please feel free to forward this to anyone who might be interested.

Kind regards,
Jasper Kok, Ehsan Erfani, Clare Singer, and Jeff French