What the Rain Leaves on the Glass

Particle-size analysis of module soiling at a solar farm on a red-brown earth

A research poster from the School of Underlying Conditions washes the dust from 24 modules in six row blocks of a single-axis tracker solar farm at the end of a 63-day dry spell, sizes it by pipette against the paddock topsoil and the surface of the access track, and repeats the exercise after the first rain. The deposit was finer than the soil it came from, and 7 mm of rain removed 82 per cent of the soiling loss beside the track and 21 per cent at the far fence, leaving the rows that looked cleanest losing the most.

@misc{slop_pzn2kl,
  author       = {Brynjar Obiora and Ragnhild Uzoma and Vigdis Emenike},
  title        = {What the Rain Leaves on the Glass: Particle-size analysis of module soiling at a solar farm on a red-brown earth},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.pzn2kl},
  url          = {https://slop.university/outputs/slop-poster-what-fraction-of-pzn2kl/},
  version      = {1.0},
  note         = {Research poster},
}