Johannes Peter Letzmann

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Johannes Peter Letzmann

Johannes Peter Letzmann (born July 19, 1885 in Wenden ; † May 21, 1971 in Langeoog ) was an Estonian meteorologist with a special interest in storms. It was only after his death that he became known for Johannes Letzmann's guidelines on trombone observation, recording and climatology from 1937 , which made it possible to assess tornado risks regionally in Europe.

Life

From 1906 to 1913 he studied philosophy and languages at the University of Tartu and then, after a year, physics. Alfred Lothar Wegener aroused and promoted his interest in tornadoes (still called large bombs by him ) from 1918. Until the Second World War, he lectured at the University of Tartu. In 1924 he received his doctorate there. Between 1928 and 1933 he often stayed with Alfred and Kurt Wegener at the University of Graz and described the Baltic Tornadoallee .

From 1935 to 1938 he was a member of the Committee for Vortex Research of the International Meteorological Organization (IMO) . This prompted his drafting of the catalog of guidelines for drum research .

As a man of German origin, he was forced to leave Estonia in 1939 when the war began. After a short time he got the opportunity to move to Graz, where he continued to work until 1947. After his research funds were canceled, he stayed in Austria until 1969 and then moved to the Altenstift Baltenheim on Langeoog , where he died in 1971.

Works

  • Co-editor of Gerland's contributions to geophysics
  • Wind and water pants in Europe
  • Guidelines for Research into Trumpets, Tornadoes, Waterspouts, and Small Trumpets. IMO, Klimatol. Komm., Publ. 38/1937, Salzburg, pp. 91–110.
    • 2nd edition Graz 1944
  • For the kinematics and dynamics of stable air vortices. 1933
  • The field of motion in the foot of an advancing tire or waterspout
Eesti vabariigi Tartu ülikooli toimetused. Acta et commentationes Universitatis Dorpatensis. A. Mathematica, physica, medica 1923

Literature and other sources

  • Richard E. Peterson: Letzmann's and Koschmieder's “Guidelines for Research on Funnels, Tornadoes, Waterspouts and Whirlwinds” . Bull. Amer. Meteorol. Soc. 73, 597-611.
  • Richard E. Peterson: Johannes Letzmann: A pioneer in the study of tornadoes. Wea. Forecasting 7, 166-184.
  • Richard E. Peterson: Johannes Peter Letzmann: pioneer tornado researcher. In: Heino Eelsalu, Heino Tooming: Meteorology in Estonia in Johannes Letzmann's times and today. Estonian Academy Publishers, Tallinn 1995, 9-43.
  • Letzmann's estate at the Carl Schirren Society, Lüneburg.

Individual evidence

  1. ↑ a b c d e f N. Dotzek, G. Berz, E. Rauch, RE Peterson: The significance of Johannes P. Letzmann's "Guidelines for Research into Trombi, Tornadoes, Water Pants and Small Trumpets" for today's tornado research ( Memento des Originals from September 28, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 128 kB). In: Meteorological Journal . Tape. 9, No. 3, June 2000, 165-174. @1@ 2Template: Webachiv / IABot / www.tordach.org
  2. ^ Richard E. Peterson: Johannes Letzmann: A Pioneer in the Study of Tornadoes , Atmospheric Science Group, Texas Tech University, Lubbock, Texas, 1991.
  3. ↑ Johannes Peter Letzmann: Guidelines for Researching Thrombi, Tornadoes, Water Pants and Small Trumpets ( Memento of the original from May 18, 2008 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 115 kB). @1@ 2Template: Webachiv / IABot / www.tordach.org
personal data
SURNAME Letzmann, Johannes Peter
ALTERNATIVE NAMES Letzmann, Johannes; Letzmann, Johannes P.
BRIEF DESCRIPTION Estonian meteorologist
DATE OF BIRTH July 19, 1885
PLACE OF BIRTH Turn
DATE OF DEATH May 21, 1971
Place of death on Langeoog