Aviation
General /
Brazil
sowing clouds
Aircraft induce more than 17 billion liters of rain in the state of Paraná, southern Brazil
Reprodução/Governo do Paraná
Gabriela Ramos
8/31/2021
The Basic Sanitation Company of Paraná (Sanepar), between December 2020 and May 2021, carried out 47 flights with sowing clouds that managed to induce 32 rains, with 17.6 billion liters of rain over the Metropolitan Region of Curitiba. 6.5 billion of which were used to enlarge the public supply dam basins, according to the Paraná State Government. The rains that occurred around the basins of interest also contributed to increase the region's hydrological cycle.
An operation like this works as follows: an aircraft must fly over a promising cloud (identified through climate monitoring, which was carried out daily at Bacacheri Airport, in Curitiba) and spray it with drinking water droplets of controlled diameter. The droplets, added to the existing ones, help to increase the cloud's mass, causing precipitation in the form of rain in the place.
It is possible to distinguish the “natural” rains from the rains resulting from the operation and also identify the volume of precipitation through the crossing of information such as: aircraft path, flight time, sown area, satellite images and radar meteorological data.
Combining operational work with technological innovation, this measure is part of the crisis management plan developed by Sanepar in order to mitigate the impacts of the drought in the Metropolitan Region of Curitiba. The Paraná Environmental Technology and Monitoring System (Simepar) and the Integrated Center for Air Defense and Air Traffic Control (Cindacta) also participated in the project.
Claudio Stabile, CEO of Sanepar, said: "Throughout this period of water crisis, Sanepar has been using a series of technical knowledge and innovation that result in a combination of actions that mitigate the effects of the drought."
Reprodução/Governo do Paraná
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Gabriela Ramos
Gabriela is the latest addition to the editorial team of our website, having provided us with her solid background in editing, publishing and photography, and her interest and training in aviation history and historiography. His good taste and common sense and great cleverness and sagacity in the selection of themes and materials greatly enriched our vocabulary and narrative style. Gabriela brought unusual predicates and came to stay, helping to point the way of success of our portal.
   
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