Weather Modification

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weather modification

[′weth·ər ‚mäd·ə·fə′kā·shən]
The changing of natural weather phenomena by technical means; so far, only on the microscale of condensation and freezing nuclei has it been possible to exert modifying influences.

Weather Modification


a group of measures taken to change the climate in a way that is useful to humans (for example, to improve the living conditions of the population in a particular region or to develop particular sectors of agriculture). At the present level of science and technology, weather modification can only be carried out over comparatively small areas, involving primarily the layer of the atmosphere next to the ground.

Weather modification plans for significant areas envision either direct influence on the atmosphere by technical means or a change in the geographic factors that influence the processes of climate formation. Examples of such projects are dusting of the upper layers of the atmosphere to change the heat exchange between the earth and space, the use of atomic energy to affect the general circulation of the atmosphere, the construction of dams to change the behavior of ocean currents, and the breakup of polar ice. Some of these projects will be technically feasible in the near future. However, at the present level of development of science, all the possible consequences of the particular interventions in the processes of climate formation cannot be foreseen. Therefore, the existing climatic conditions on earth must be preserved, and the tendency of human intervention in natural processes to worsen them must be limited.


Budyko, M. I. Klimat i zhizn’. Leningrad, 1971.
Budyko, M. I. Vliianie cheloveka na klimat. Leningrad, 1972.
Berliand, M. E., and K. la. Kondrat’ev. Goroda i klimatplanety. Leningrad, 1972.


References in periodicals archive ?
After obtaining his bachelors degree, Demoz read an article about cloud seeding, a form of human-directed weather modification typically intended to induce rain and snow.
Most of man's inadvertent weather modification has resulted from pollution of the atmosphere by discharges from his technological establishment.
Weather modification is actually nothing new for China.
Clouds are whipped into enticing ornamental terraces in "Cloud Garden," in a discussion on cloud seeding and weather modification technology.
The Weather Modification Committee, since 1985 the Climate and Weather Change Committee, arranged for specialists to update information and references in the guideline for water resource managers on making decisions about the use of cloud seeding to augment available water supplies.
The clouds generated by the mountain could be seeded -- a weather modification process designed to maximise the amount of rain produced -- to boost rainfall and control when wet weather occurs.
The country at present already hosts the world's biggest weather modification programme.
The effectiveness of cloud seeding is debatable as there is still no convincing scientific proof of the efficacy of intentional weather modification as it only has 30 per cent or less chance of success.
More recently, a civil society platform of which I am a member, Skyguards, organised a conference, "Beyond theories of weather modification -- Civil Society versus Geoengineering", in the European Parliament in 2013.
Cloud seeding is a weather modification method where silver iodide or calcium chloride are introduced in the atmosphere to induce condensation, and eventually, precipitation.
The Convention bans weather warfare, which is the use of weather modification techniques for the purposes of inducing damage or destruction.
Cloud seeding is a weather modification technique that enhances the ability of clouds to produce rain by introducing a substance such as table salt either at the cloud base or cloud top.