WEEKLY SURVEYOR - JOINT CHINESE-SOVIET WEATHER MODIFICATION PROJECT REPORTED

• Document Type: FOIA
• Collection: FOIA Collection
• Document Number (FOIA) /ESDN (CREST): 00122631
• Release Decision: RIFPUB
• Original Classification: U
• Document Page Count: 4
• Document Creation Date: December 28, 2022
• Document Release Date: May 14, 2018
• Case Number: F-2016-00405
• Publication Date: July 1, 1974

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Weekly Sur.veyor
1 July 1974
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WEEKLY SURVEYOR
Directorate of Scienc, and Technology
1 July 1971;
This publication is intended to furnish the intelligence community with a timely
survey of significant current scientific intelligence. The items herein are based on
selected incoming reports of all kinds received during the previous week. The com-
ments represent the views of the Office of Scientific Intelligence and the Office
of Weapons Intelligence and are coordinated to the extent possible in the time
available within CIA but, being based on the material at hand, are subject to change
on receipt of further information or analysis. We caution against action taken solely
on the basis of the preliminary evaluations herein. Substantive questions concern-
ing items in this publicatlon,may be addressed directl to the Surveyor Staff, OSI,
CIA Headquarters, Langley. Questions concerning dis-
tribution should be forwarded,through appropriate departmental channels.
CONTENTS
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Joint Chinese-Soviet Weather Modification
Project Reported
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Weekly Surveyor
1 July 1974
Joint Chinese-Soviet Weather Modification Pro ect Re orted:
t e and the U are currently collabo-.
rating in a joint weather modification project. The project
which is und wa in the "Great Plains" area includes hail
su ression.
Comment: This is the most recent indication of direct
collaboration between the two countries in meteorology.
Soviet hail suppression technology has been exported to
several foreign countries during the past few years, pos-
sibly including the PRC. It is not clear where the
"Great Plains" areas are located, but field operations in
the Kansu and Shansi Provinces and Inner Mongolia have been
increasing. These operations involve attempts to increase
precipitation by cloud seeding and to disperse potential
hail clouds using shells fired from cannons and artillery
pieces. The latter method is a well-publicized Soviet
technique. Similar experiments also have been reported
in agricultural areas of Central and Northeast China.
A recent Soviet report on meetings held in 1973 in-
cluded a reference to Chinese attendance at a Bloc Climato-
logical Working Group meeting in Leningrad. Whether the
Chinese actually participated or attended only as observers
is not known, but this was their first known involvement
since the early to mid-1960s. This meeting and the re-
ported joint weather modification project imply at .
some resumption in loint meteorological activities.
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