Ted Fujita

Tetsuya Theodore Fujita
Born (1920-10-23)October 23, 1920
Kitakyushu, Fukuoka Prefecture, Empire of Japan
Died November 19, 1998(1998-11-19) (aged 78)
Chicago, Illinois, USA
Residence Japan, United States
Citizenship Japan, United States (1968)
Fields Meteorology
Institutions University of Chicago
Alma mater Kyushu Institute of Technology (B.S., 1943)
University of Tokyo (D.Sc., 1950)
Thesis Analytical Study of Typhoons (1952)
Doctoral advisor Shigekata Syono
Doctoral students Roger M. Wakimoto, Gregory S. Forbes
Other notable students Brian Smith
Known for tornadoes, tornadic storm morphology, Fujita scale, multiple-vortex tornadoes, downbursts, microbursts, mesoscale meteorology
Notable awards Order of the Sacred Treasure, Gold and Silver Star (1991)
Children Kazuya Fujita

Tetsuya Theodore "Ted" Fujita (藤田 哲也 Fujita Tetsuya, October 23, 1920 – November 19, 1998) was a prominent Japanese-American severe storms researcher. His research at the University of Chicago on severe thunderstorms, tornadoes, hurricanes, and typhoons revolutionized the knowledge of each.

Biography

Fujita was born in Kitakyushu, Fukuoka Prefecture, Japan. He studied at Kyushu Institute of Technology and was an associate professor there until 1953, when he was invited to the University of Chicago on the invitation of Horace R. Byers who had become interested in his research, particularly his independent discovery of the cold-air downdraft.

Overview

Fujita is recognized as the discoverer of downbursts and microbursts and also developed the Fujita scale,[1] which differentiates tornado intensity and links tornado damage with wind speed.

Fujita's best-known contributions were in tornado research; he was often called "Mr. Tornado" by his associates and by the media.[2] In addition to developing the Fujita scale, Fujita was a pioneer in the development of tornado overflight and damage survey techniques, which he used to study and map[3] the paths of the two tornadoes that hit Lubbock, Texas on May 11, 1970. He established the value of photometric analysis of tornado pictures and films to establish wind speeds at various heights at the surface of tornado vortices.[4] Fujita was also the first to widely study the meteorological phenomenon of the downburst, which can pose serious danger to aircraft. As a result of his work, pilot training worldwide routinely uses techniques he pioneered to provide instruction to students.[5]

Fujita was also largely involved in developing the concept of multiple vortex tornadoes, which feature multiple small funnels (suction vortices) rotating within a larger parent cloud. His work established that, far from being rare events as was previously believed, most powerful tornadoes were composed of multiple vortices. He also advanced the concept of mini-swirls in intensifying tropical cyclones.

The American Meteorological Society (AMS) held the "Symposium on The Mystery of Severe Storms: A Tribute to the Work of T. Theodore Fujita" during its 80th Annual Meeting in January 2000[6] and also published a special issue of its flagship journal, the Bulletin in January 2001.[7] After Fujita died, Storm Track magazine released a special November 1998 issue, "A Tribute To Dr. Ted Fujita"[8] and Weatherwise published "Mr. Tornado: The life and career of Ted Fujita " as an article in its May/June 1999 issue.[9]

World War II

Fujita in 1945 was residing in Kokura, the primary target of the first nuclear strike in human history by the plutonium bomb (nicknamed Fat Man) and the secondary target of the first nuclear strike by the uranium one. On 6 August 1945, the uranium bomb was dropped on the primary target at Hiroshima. Three days later on 9 August 1945, the primary target was Kokura. However, due to cloudy weather and smoke from the neighboring city of Yahata the plutonium bomb was dropped on the secondary target, the city of Nagasaki. From this, the phrase "Kokura's Luck" came about, referring to when a great tragedy is avoided when the person or party is not even aware of the tragedy to begin with. Furthermore, studying the damage caused by the nuclear blasts contributed to his understanding of downbursts and microbursts as "starbursts" of wind hitting the Earth's surface and spreading out.

References

  1. ↑ Fujita, T.T. (1971). "Proposed Characterization of Tornadoes and Hurricanes by Area and Intensity". Satellite and Mesometeorology Research Paper 91. Chicago, IL: Department of Geophysical Sciences, University of Chicago.
  2. ↑ USA Today 2005-03-16
  3. ↑ The Lubbock Tornado: May 11, 1970
  4. ↑ McDonald, James R. (2001). "T. Theodore Fujita: His Contribution to Tornadic Knowledge Through Damage Documentation and the Fujita Scale". Bull. Amer. Meteor. Soc. 82 (1): 63–72. Bibcode:2001BAMS...82...63M. doi:10.1175/1520-0477(2001)000<0063:TTFHCT>2.3.CO;2.
  5. ↑ Wilson, James W.; R. M. Wakimoto (2001). "The Discovery of the Downburst: T.T. Fujita's Contribution". Bull. Amer. Meteor. Soc. 82 (1): 49–62. Bibcode:2001BAMS...82...49W. doi:10.1175/1520-0477(2001)082<0049:TDOTDT>2.3.CO;2.
  6. ↑ Symposium on The Mystery of Severe Storms: A Tribute to the Work of T. Theodore Fujita. Long Beach, CA. 2000.
  7. ↑ "A Tribute to the Works of T. Theodore Fujita". B. Am. Meteorol. Soc. 82 (1). 2001.
  8. ↑ Marshall, Tim; et al. (1998). "A Tribute to Dr. Ted Fujita". Storm Track. 22 (1).
  9. ↑ Rosenfeld, Jeff (1999). "Mr. Tornado: The life and career of Ted Fujita". Weatherwise. 52 (3): 18–25. doi:10.1080/00431679909604293.

Sources

  • Fujita, T. T., 1970b. The Lubbock tornadoes: a study of suction spots: Weatherwise, v. 23(4), p. 160-173. [published August, 1970] (first issued as SMRP 88)
  • Shanahan, J. A., and Fujita, T. T., 1971c. The Lubbock tornadoes and Fujita suction vortices. Presented at October 18–22, 1971, ASCE Annual and National Environmental Engineering meeting, St. Louis. [October, 1971]
  • Fujita, T. T., 1976g. Photogrammetric analysis of tornadoes, F. History of suction vortices, in Peterson, R. E., ed., Proceedings of the Symposium on Tornadoes, Assessment of Knowledge and Implications for Man: Institute for Disaster Research, Texas Technological University, Lubbock, p. 78-88. [June, 1976] (also issued as SMRP 140e)
  • Fujita, T. T., and Forbes, G. S., 1976f. Photogrammetric analysis of tornadoes, D. Three scales of motion involving tornadoes, in Peterson, R. E., ed., Proceedings of the Symposium on Tornadoes, Assessment of Knowledge and Implications for Man: Institute for Disaster Research, Texas Technological University, Lubbock, p. 53-57. [June, 1976] (also issued as SMRP 140c)

Further reading

Memoirs

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