The report contains reviews methods for the artificial dissipation of low-level clouds and fogs. A classification of dissipation methods is given. The classification was made on the basis of the physical processes capable of leading to an improvement of visibility in a fog. The classification makes it possible to analyze any modification methods by comparing them with the most characteristic methods listed in the table. It is proposed that the specific expenditures on energy reagent during a definite period be regarded as the principal criterion of method efficiency.
Edited trans. of Konferentsiya po Problemam Aviatsionnoi Meteorologii, Trudy (Conference on Problems of Aviation Meterology. Transactions), n.p., 1969 p158-167, by J. Miller.