UAE Research Programme For Rain Enhancement Science Reviews Progress Of Laser-Based Rain Triggering Project

The UAE Research Programme for Rain Enhancement Science (UAEREP) recently completed a midterm site visit to the Technology Innovation Institute (TII). The visit was part of the assessment of the Cycle 5 research project, "Laser-Based Rain Triggering Demonstrator with Remote Sensing Technology." This project, led by Dr. Guillaume Matras from the Directed Energy Research Centre (DERC), investigates using high-power lasers to induce water condensation and alter cloud microphysics.

Laboratory experiments at TII have shown that laser-induced condensation and filament formation are feasible. This confirms the potential of using lasers for rain enhancement. The project also includes field testing with a Mobile High-Power Pulsed Laser Demonstrator (MHPPLD). This device, equipped with remote sensing technology, can be deployed in various locations across the UAE.

To enhance modelling capabilities, the project collaborates with international partners. These include the University of Hyogo in Japan for super-droplet cloud simulations, Southern University of Science and Technology in China for laser-microphysics coupling, and Empa in Switzerland for AI-driven LiDAR data analysis. These efforts aim to simulate conditions relevant to the UAE, such as convective development over the Hajar Mountains.

Alya Al Mazroui, Director of UAEREP, highlighted the project's role in positioning the UAE at the forefront of laser-based rainfall enhancement innovation. She stated that integrating experimental physics with advanced atmospheric modelling and AI diagnostics explores new weather modification methods. The project exemplifies global scientific collaboration by bringing together expertise from leading institutions.

During the site visit, a new multi-laser system architecture was presented. This system replaces a single-source laser with a hybrid femtosecond–nanosecond configuration. It aims to increase peak power and plasma density while reducing operational risks. An advanced remote sensing suite was also developed, combining spectroscopy with multi-wavelength LiDAR sensing for real-time droplet formation monitoring.

This technological advancement led to filing a joint patent between TII and NCM with the United States Patent and Trademark Office on 14th October 2025. The project continues to build local capacity by involving junior researchers and students in its work packages. Notably, Reem Al Ameri, a Mechanical Engineer at TII, has started her PhD research in partnership with EMPA and the University of Bern.

Strategic Vision for Water Security

Dr. Abdulla Al Mandous, President of the World Meteorological Organisation (WMO) and Director-General of NCM, emphasised their commitment to adopting advanced technologies that address water scarcity challenges effectively. He noted that laser-based rain enhancement is promising for improving rainfall in arid regions while strengthening local scientific capabilities through meaningful research partnerships.

The project's focus on fostering scientific excellence supports long-term water security goals in the UAE. By empowering future scientists through specialised laboratories at TII and local universities, it enhances the country's status as a hub for innovative rain enhancement research.

The ongoing efforts aim to advance sustainable water resource management while contributing significantly towards achieving national visions related to water security.

With inputs from WAM