(Item 220 10/5/520 from file: 103) ERA-12-005107; EDB-87-005198 01877565 . Haig, T.O. Bogert, J.C.; Rados, R.M.; ): Author(s Title: Operation Greenhouse. Scientific Director’s report of atomic-weapon Measurement Annex 4.2. 1951. at Eniwetok, tests movements associated with atomic blasts Air Force Cambridge Research Center, Corporate Source: Atmospheric Physics Lab. Publication Date: 1 Sep 1985 Report Number(s): Document Type: of surface-air MA (USA). p 96 AD-A-995357/1/XAB Report Language: English Journal Announcement: EDB8611 Availability: NTIS, PC AO5/MF AQl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: The purpose of this project was to record continuous measurements of the surface winds in the vicinity of an atomic blast immediately prior to the blast, during passage of the shock wave, and immediately after the blast with special regard to the blast-induced afterwind following local dissipation of the shock wave. From the data obtained, it was concluded that following an atomic explosion there are two specific causes of air-mass movement. One is related to the shock phenomenon and the other to the rising fireball. It can also be concluded that the heated-thermopile-type and strain-gage-type anemometers could be developed to yield more complete data on the air-mass movement at ground level following an atomic explosion. Major Descriptors: *GREENHOUSE PROJECT; *NUCLEAR EXPLOSIONS -- BLAST EFFECTS; *NUCLEAR EXPLOSIONS -- SHOCK WAVES Descriptors: ANEMOMETERS; GROUND LEVEL; NUCLEAR FIREBALLS; WIND Broader Terms: EXPLOSIONS; FIREBALLS; LEVELS; MBASURING INSTRUMENTS; NUCLEAR EXPLOSIONS Subject Categories: 450202* Weaponry -- 10/5/521 01877564 Author(s): -- Explosions & Explosives -- Nuclear -- (-1989) (Item 221 from file: 103) BRA-12-005106; EDB-87-005197 Anderson, McPherson, D.E. C.E.; Gustafson, P.E.; Title: Operation Greenhouse. Scientific: tests at Eniwetok, 1951. Annex 4.1. physics. Part 2. Development of the Cloud-tracking photography Corporate Source: Air Force Cambridge Atmospheric Physics Lab. Publication Date: 1 Sep 1985 p 178 Report Number(s): Kellogg, W.W.; McKown, R.E.; Director’s report of atomic-weapon Cloud studies. Part 1. Cloud atomic cloud. Part 3. Research Center, MA (USA). AD-A-995356/3/XAB Document Type: Report Language: English Journal Announcement: EDB8611 Availability: NTIS, PC A09/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: The cloud-physics project was primarily intended to fulfill a requirements for detailed information on the meteorological microstructure of atomic clouds. By means of a tracking and photographic network extending halfway around Eniwetok Atoll, the behavior of the first three clouds of Operation Greenhouse were observed and recorded. The rise of the fourth cloud was observed visually from only one site. The analysis of these observations, combined with information about the local weather conditions, gives a fairly complete picture of the development of each of the clouds. Parti mphasis was placed on the earlier phases of development SHOTTa 7 ° pen