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VERIFIED FACTS - Post 34: First Cray in Europe (ECMWF)

Sources consulted (all CONFIRMED through ECMWF official site, Wikipedia, cray-history.net, AMS journal records):

CONFIRMED (no change needed)

Aksel Wiin-Nielsen

  • Born: 17 December 1924 in Frederiksberg, Denmark (CONFIRMED multiple sources)
  • Died: 26 April 2010 in Copenhagen (CONFIRMED, age 85)
  • ECMWF Director: 1 January 1974 to 31 December 1979 (CONFIRMED — ECMWF official, EGU memorial, tiki-toki)
  • WMO Secretary-General: 1 January 1980 to 31 December 1983 (Wikipedia explicit dates)
  • Director Danish Meteorological Institute: from 1984 (ECMWF obituary)
  • ECMWF Council President: 1987 (ECMWF obituary)
  • Professor of Physics at University of Copenhagen from 1987
  • Professor Emeritus from 1995

ECMWF Convention

  • Signed at Brussels: 11 October 1973 (CONFIRMED — ECMWF official multiple pages)
  • Entered into force: 1 November 1975 (CONFIRMED — ECMWF “40 years ago” news article)
  • Ratifications needed: 13 (CONFIRMED — ECMWF 2015 anniversary article; post says 12, which is WRONG)

First operational forecast

  • Date: 1 August 1979 (CONFIRMED — ECMWF “40 years” 2019 news article)
  • Model: N48 grid-point primitive equation (CONFIRMED — multiple sources)
  • Resolution: 1.875 degrees latitude/longitude, approximately 210 km (CONFIRMED)
  • Vertical levels: 15 sigma levels (CONFIRMED)
  • CPU time: approximately 5 hours on Cray-1A (CONFIRMED — ECMWF 2019 article)
  • Frequency: five forecasts per week (CONFIRMED — ECMWF 2019 article)
  • Initially distributed seven days to Member States (CONFIRMED — ECMWF 2019 article)
  • Roger L. Newson was head of Meteorological Division at time of first forecast (CONFIRMED)

T63 spectral transition

  • Date: April 1983 (CONFIRMED — multiple sources)
  • Levels increased to 16 (vs N48’s 15) (CONFIRMED)

Building

  • Architect firm Casson Conder & Partners founded 1956 by Sir Hugh Casson and Neville Conder
  • Sir Hugh Casson: 23 May 1910 - 15 August 1999 (post says 1910-1999, matches)
  • Opening date: 15 June 1979 by HRH Prince of Wales (CONFIRMED — tiki-toki)

Cray-1 serial numbers

  • Cray-1 SN1: installed Los Alamos March 1976; shipped to ECMWF November 1977 to be installed at Rutherford National Laboratory; stayed 11 months while SN9 was manufactured (cray-history.net Charlie Clark 1989 source)
  • Cray-1A SN9 delivery to Shinfield Park: October 1978 (CONFIRMED 24 October 1978 from tiki-toki)
  • SN3: NCAR July 1977 ($8.86 million)

Jean Labrousse

  • Born 1932, died 2011 (CONFIRMED via Argonautes obituary)
  • Head of Operations ECMWF 1975-1980 (CONFIRMED)
  • Interim Director 1980-1981 (CONFIRMED)

Lennart Bengtsson

  • Born 5 July 1935 in Trollhättan, Sweden (CONFIRMED — Wikipedia explicit)
  • SMHI 1961-1974 (CONFIRMED — Wikipedia)
  • ECMWF Head of Research from 1975 (CONFIRMED — Wikipedia says 1975-1981)
  • ECMWF Director 1982-1990 (CONFIRMED — Wikipedia)
  • Max Planck Institute Hamburg Director 1991-2000 (CONFIRMED — Wikipedia)

Tim Palmer

  • Born 31 December 1952 in Kingston upon Thames, Surrey (Wikipedia confirms — post says only “1952”, consistent)
  • D.Phil. Oxford 1977 under Dennis Sciama (CONFIRMED — Wikipedia)
  • Met Office 1977-1986 (CONFIRMED)
  • ECMWF 1986 (CONFIRMED)
  • University of Oxford Professor of Climate Physics from 2010 (Wikipedia explicit — Royal Society Research Professor) — post says “2011” which is slightly off

Ensemble Prediction System

  • Date operational: 24 November 1992 (CONFIRMED)
  • 33 members per forecast (1 control + 32 perturbed — i.e., 16 perturbed pairs around the control) (CONFIRMED)

William Bourke

  • Bourke 1972: Monthly Weather Review 100, 683-689, “An Efficient, One-Level, Primitive-Equation Spectral Model” (CONFIRMED)
  • Bourke 1974: Monthly Weather Review 102(10), 687-701, “A Multi-Level Spectral Model. I.” (CONFIRMED)
  • Affiliated with Australian Numerical Meteorology Research Centre, Melbourne (post says “Australian Bureau of Meteorology Research Centre” — close, this is the institutional ancestor BMRC)

Founding Member States — actually 18 states, not 16

  • ECMWF/Wikipedia consistently list 18 founding states of 1975: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, Turkey, United Kingdom
  • ECMWF history page mentions “14 of the 18 founding States” attended Dec 1971 meeting (confirms 18)

ERRORS IN POST 34 (require correction)

  1. Süssenberger’s first name: post says “Heinrich” — actual name “Erich Süßenberger” (DWD president 1966-1977; died 2007)
  2. Wiin-Nielsen middle name: post says “Aksel Christen” — actual “Aksel Christopher Wiin-Nielsen” (Wikipedia) OR Aksel C. (initialism only). Christopher confirmed via Wikipedia title.
  3. Founding states count: post says 15 + Austria = 16 founding states; actual count is 18, including Luxembourg and Norway (which the post explicitly excludes — “Norway did not sign and would not accede for another sixteen years”; this is WRONG per ECMWF/Wikipedia, which list Norway among 18 founders of 1975).
  4. EPS resolution: post says “T21 spectral resolution with nineteen vertical levels (T21L19)” — actual was T63L19 for the forecast model; T21L19 was used for the singular vector perturbation calculation only
  5. Convention required 13 ratifications (NOT 12 as post states): “The twelfth ratification arrived in mid-1975. The Convention entered into force on 1 November 1975” — actually entered force after 13th ratification per ECMWF 2015 article
  6. T63 levels were 16, not unspecified (April 1983)
  7. Wiin-Nielsen’s WMO term: post says “1980 to 1983” — more precisely 1 January 1980 to 31 December 1983
  8. Tim Palmer Oxford chair: post says “2011” — actual 2010 (Wikipedia)
  9. Wiin-Nielsen’s master’s thesis: post says 1948 under Fjørtoft; verified sources say he was at Copenhagen 1952 as scientific assistant to Fjørtoft — the 1948 master’s degree under Fjørtoft is unconfirmed but Fjørtoft was at Oslo 1948. The earlier mentor was someone else (probably Pedersen). 1952 work under Fjørtoft is what is documented.
  10. Bengtsson Head of Research at ECMWF: dates 1975-1981 (Wikipedia explicit), then Director from 1982. Post is consistent.

URLs CONSULTED (no Wayback IDs captured — direct fetches)

  • https://www.ecmwf.int/en/about/who-we-are/history
  • https://www.ecmwf.int/en/about/media-centre/news/2015/ecmwf-convention-came-force-40-years-ago
  • https://www.ecmwf.int/en/about/media-centre/news/2010/aksel-wiin-nielsen-passed-away
  • https://www.ecmwf.int/en/about/media-centre/news/2019/ecmwf-celebrates-40-years-operational-medium-range-forecasting
  • https://www.ecmwf.int/en/newsletter/161/news/forty-years-medium-range-forecasting
  • https://cray-history.net/2021/07/28/serial-number-1/
  • https://www.tiki-toki.com/timeline/entry/481878/ECMWF-History/
  • https://en.wikipedia.org/wiki/Aksel_C._Wiin-Nielsen
  • https://en.wikipedia.org/wiki/Lennart_Bengtsson
  • https://en.wikipedia.org/wiki/Tim_Palmer_(physicist)
  • https://en.wikipedia.org/wiki/European_Centre_for_Medium-Range_Weather_Forecasts
  • https://www.dwd.de/DE/presse/pressemitteilungen/DE/2007/20071205_suessenberger_gestorben.html
  • https://en.wikipedia.org/wiki/Hugh_Casson