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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-08-21 0:49 |
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Conference: Bucharest University Faculty of Physics 2025 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Role of the Romanian National Hail Suppression and Rain Enhancement
System in climate change adaptation
Authors:
Daniel FLOREA (1), Vasilica ISTRATE (1), Aurel-Dănuț AXINTE (1), Dragoș Andrei SIRBU (1), Eduard POPESCU (1), Doru Dorian POPESCU (1), Emil SIRBU (1)
Affiliation:
(1) S.C.”Intervenții Active în Atmosferă” S.A. Strada Răcari, Nr. 5, București, ROMÂNIA office@iaa.eu
E-mail
daniel.florea@iaa.eu
Keywords:
hail suppression, rain enhancement, monitoring system
Abstract:
In the context of climate changes with more frequent extreme phenomena like hailstorms and droughts affecting significant areas, the hail suppresion and rainfall enhancement activities are of particular importance due to their huge economic impact. Hail suppresion and rainfall enhancement are part of a broader category of actions called weather modification activities. This type of activities started in Romania in 2008, beginning with hail suppression in the Prahova area, later spreading to other regions of the country and are carried out under the law no. 173/2008.
The paper aims to provide an overview of the Romanian National Hail Suppression and Rain Enhancement System (SNACP), including the methods and procedures it uses protecting nowadays an area of approximately 2.8 million hectares. In 2025, Romania has 6 Combat Units and 106 anti-hail missile launching points. The whole process of launching anti-hail rockets is strictly regulated considering the air traffic safety. In addition, several experiments were performed with a twofold aim: to provide reliable scientific results underscoring that the weather modification activities do protect the agricultural crops using the AgI-carrying anti-hail rocket method, and to add input to current scientific knowledge serving as a basis for developing region-specific mitigation strategies to reduce the negative impact of such extreme events.
Small-scale experiments to enhance the precipitations using the airplane method and the helium balloon method with pyrotechnic flares containing NaCl and AgI, have been carried out on different types of clouds in different climatic regions and during different seasons. The SNACP system also allows small-scale experimental tests for precipitation enhancement using ground-based generators. The current work also presents a part of scientific results in each category mentioned above. A solid database containing multiple micro and macrophysical parameters and metadata of investigated weather systems has been constructed.
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