Three-dimensional modelling of precipitation enhancement by cloud seeding in three different climate zones

Mladjen Ćurić, Miloš Lompar, Djordje Romanic, Linda Zou, Haoran Liang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

This study numerically investigates precipitation enhancement from cumuliform clouds in three different climate regions: (1) Arid climate of the United Arab Emirates (UAE); (2) maritime climate of Thailand; and (3) continental climate of Serbia. Recently developed core/shell sodium chloride (NaCl)/titanium dioxide (TiO2) nanostructure (CSNT) aerosol was tested as a precipitation enhancer in all three climate regions. Previous experimental studies in cloud chambers and idealized numerical simulations demonstrated that CSNT is a significantly more effective precipitation enhancer than the traditional NaCl. Here, CSNT and NaCl seeding agents are incorporated into the WRF (Weather Research and Forecasting) model microphysics with explicate treatment of aerosol. Our results show that CSNT is a profoundly more effective precipitation enhancer in the case of arid climate characterized with low humidity. The accumulated surface precipitation in the arid test was 1.4 times larger if CSNT seeding agent was used instead of NaCl. The smallest difference in the effectiveness between CSNT and NaCl was observed in the maritime case due to their similar activation properties at high values of relative humidity.

Original languageBritish English
Article number294
JournalAtmosphere
Volume10
Issue number6
DOIs
StatePublished - 1 Jun 2019

Keywords

  • Climate zones
  • Cloud seeding
  • Precipitation enhancement
  • Seeding material
  • Weather modification
  • WRF

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