Atmospheric Convective Vortex Rainmaker Tower Model

Underwrite 500m tall hollow solar-chimney towers surrounded by a 2km diameter glass collector canopy (heating surface desert air to create powerful 150 km/h buoyant updrafts that inject warm humid surface air into upper tropospheric condensation levels to trigger rainfall). Model sovereign regional precipitation enhancement contracts ($55M/tower/yr), and 25-yr IRR.