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VERIFIED FACTS — Post 06 Charney

Post: _posts/2026-03-29-The-man-who-tamed-the-equations.md Status: COMPLETE Last updated: 2026-05-17 Method: Phillips 1995 NAS memoir + Lynch 2008 BAMS + CFvN 1950 (UAlberta PDF) + Lynch 2022 arXiv + Wikipedia Charney Report + Wikipedia Jule Charney + realclimate (Manabe quote) + multiple NWP history sources.

VERIFIED FACTS (primary-sourced)

Biography

  • Born 1 January 1917 in San Francisco. (Phillips memoir, Wikipedia)
  • Parents Stella and Ely Charney, Jewish immigrants from “White Russia” (= Belarus today). Each worked in NY garment industry; met and married in St. Louis. Brief stop in Denver; moved to LA in 1914; temporary move to San Francisco where Jule was born. (Phillips)
  • Father active in union affairs; both fervent socialists. Stella held more leftist position than Ely. (Phillips, exact phrasing in post matches)
  • “Read widely and voraciously in the public library during grade school.” (Phillips, exact)
  • At age 14, in a relative’s NY apartment, found Osgood’s calculus book; tried problems; could solve them. (Phillips)
  • Played games with young Yehudi Menuhin on Menuhin’s apartment rooftop, used this much later for mutual recognition. (Phillips)
  • Hollywood High School graduation January 1934; had self-taught most of differential and integral calculus. (Phillips)
  • UCLA chosen “because of UCLA’s nearness and the absence of any advice about the senior campus to the north.” (Phillips, exact wording)
  • UCLA BS Math 1938; Phi Beta Kappa + University Fellow 1939; MS 1940 under T.Y. Thomas with paper “Metric Curve Spaces” — Thomas considered it suitable for a doctorate; Jule disagreed, never submitted. (Phillips)
  • T.Y. Thomas’s seminar on fluid turbulence; Jorgen Holmboe (Norwegian, UCLA meteorology group) was invited to speak. Holmboe invited Charney spring 1941 as his assistant. (Phillips)
  • Theodore von Karman advised meteorology over aeronautics because the latter was “becoming too much of an engineering subject for a person of Jule’s theoretical inclination.” (Phillips, exact)
  • UCLA meteorology group led by Jacob Bjerknes “who had recently arrived from Norway.” Holmboe was PhD advisor. (Phillips)
  • PhD 1946, thesis “The Dynamics of Long Waves in a Baroclinic Westerly Current”; published as full October 1947 issue of J. Meteorology vol 4, pp 135-162. (Phillips, post bibliography)
  • Eric Eady independently derived same theory of baroclinic instability; met Eady in Bergen in 1947; became friends. (Phillips)
  • Post-thesis year (1946-47) with Rossby in Chicago — “two men hit it off at once”; Charney called it “the most formative experience in his professional life.” (Phillips, exact wording)
  • 1947 to early 1948: Norway (Bergen, then Oslo).
  • Early 1948: von Neumann invited Charney to head Meteorology Project at IAS Electronic Computer Project. (Phillips)
  • IAS: 1948-1956 (seven years). MIT: 1956-1981 (“MIT was the winner and offered a package deal”). Move summer 1956. (Phillips)
  • Died of lung cancer in Boston 16 June 1981 at age 64. (Phillips)

Quasi-geostrophic theory

  • Charney 1948 “On the scale of atmospheric motions” formulated quasi-geostrophic theory. Acts as low-pass filter eliminating gravity and acoustic waves. (Phillips)
  • Phillips: “The quasi-geostrophic theory is probably the most rewarding development in meteorology and oceanography since World War I.” (Phillips, exact)
  • “By eliminating from consideration at the outset the meteorologically unimportant acoustic and shearing-gravitational oscillations” — Lynch BAMS 2008 attributes this quote to Charney 1947 baroclinic instability paper. Post’s footnote 3 correctly cites Charney 1947 J. Meteorology.
  • Equivalent barotropic level “located about 5 kilometers above sea level.” (Phillips, exact wording matches post)

Richardson 1922 forecast (Lynch 2022 arXiv)

  • Richardson predicted “a change of atmospheric pressure, at a point near Munich, of 145 hPa in 6 hours. This was a totally unrealistic value, two orders of magnitude too large.” (Lynch 2022 arXiv, exact)

ENIAC 1950 integration

  • Five meteorologists: Charney, Fjortoft, J. Freeman, G. Platzman, J. Smagorinsky. Arrived Aberdeen 5 March 1950. Work for 33 days and nights. About 100,000 cards punched. (Lynch BAMS 2008)
  • ENIAC at “U.S. Army’s Ballistics Research Laboratories at Aberdeen, Maryland.” Post says Aberdeen Proving Ground — acceptable (BRL is at APG).
  • Four 24-hour forecasts from 5, 30, 31 January and 13 February 1949. (CFvN 1950 primary source: “GMT 500 mb charts for January 5, 30, and 31, and February 13, 1949”)
  • DIRECT QUOTE from CFvN 1950 Tellus: “the computation time for a 24-hour forecast was about 24 hours, that is, we were just able to keep pace with the weather.” (CFvN 1950 verbatim, page text confirmed from Alberta-hosted PDF.) Post’s footnote 5 attribution is correct.
  • “Uniformly poor”: CFvN describe the 5 Jan 1949 forecast over the United States as “uniformly poor.” (CFvN 1950 verbatim.) Post footnote 5 attribution correct.
  • Three of four forecasts beat persistence on S1 score: Lynch BAMS 2008 Table 1 confirms. NOTE: under RMS, persistence is better in case 1, ties in 3&4, forecast wins case 2. The post says “Three of the four forecasts beat persistence” without specifying score — Lynch’s S1-based claim, which is the meteorologically meaningful score.
  • 1955 Charney NAS quote: “It mattered little that the twenty-four-hour prediction was twenty-four hours in the making. That was purely a technological problem. Two years later we were able to make the same prediction on our own machine in five minutes.” (Lynch BAMS 2008 cites Charney 1955 NAS address.) Phillips memoir does NOT contain this exact quote — Lynch cites Charney 1955. Post’s footnote 1 (Phillips) is WRONG for this quote; should cite Charney 1955 / Lynch 2008.

Richardson reaction

  • Phillips memoir gives Richardson’s reaction verbatim: “Thus (d) has it on average, but only slightly. This, although not a great success of a popular sort is anyway an enormous scientific advance on the single, and quite wrong, result in which Richardson (1922) ended. So far I have only had time to glance at your five papers.” (Phillips memoir, exact)
  • Post truncates correctly to “This, although not a great success of a popular sort is anyway an enormous scientific advance on the single, and quite wrong, result in which Richardson (1922) ended.”
  • Phillips: “Richardson died several years later.” (= 1953, widely confirmed.)

JNWPU and IBM 701

  • JNWPU established 1 July 1954 (joint Weather Bureau, AWS, Navy Aerological Service). Located at Suitland MD with NAWAC 1955-1958. (NOAA history, Wikipedia)
  • IBM 701 installed March 1955; first numerical experimental forecasts one month later (April 1955). Post says “first routine real-time operational numerical weather forecasts began” in May 1955 — May vs April is a minor discrepancy but the SHIFT TO ROUTINE OPERATIONS rather than experimental run may justify May. Post wording acceptable.
  • Cressman as director: Lynch BAMS 2008 “George Cressman, the first director of the Joint Numerical Weather Prediction Unit.” Confirmed.
  • Three-level QG model used operationally: standard NWP history.
  • “The humble barotropic vorticity equation continued to provide useful guidance for almost a decade.” (Lynch BAMS 2008, exact) Post footnote 4 correct.
  • 1966: first primitive equation operational forecasts in US and West Germany. (Wikipedia Numerical weather prediction, multiple sources)

1979 Charney Report

  • Meeting at Woods Hole 23-27 July 1979 (5 days at NAS conference center). (Wikipedia Charney Report)
  • 9 scientists: Charney (chair), Akio Arakawa, D. James Baker, Bert Bolin, Robert E. Dickinson, Richard M. Goody, Cecil Leith, Henry Stommel, Carl Wunsch. (Wikipedia)
  • 22-page report. (Wikipedia)
  • Manabe’s GFDL model: ~2 deg C sensitivity (Wikipedia says 2-3 deg C; realclimate says 2 deg C). Post says “2-3 deg C” which matches Wikipedia. Hansen GISS: ~4 deg C (Wikipedia “close to 4 deg C”; realclimate says 4 deg C). Post says “3.5-4 deg C” which is broader than realclimate’s flat 4 but consistent with what Wikipedia reports.
  • Conclusion: “equilibrium climate sensitivity of 3 deg C (+/- 1.5 deg C)” / “1.5 to 4.5 deg C”. Wikipedia and post both cite this.
  • Manabe quote on Charney’s 0.5 deg margin of error: Manabe stated (2004 retrospective per realclimate / climate sensitivity Wikipedia) that Charney “chose 0.5 deg C as a reasonable margin of error, subtracted it from Manabe’s number, and added it to Hansen’s, giving rise to the 1.5 to 4.5 deg C … range of likely climate sensitivity that has appeared in every greenhouse assessment”. (Climate sensitivity Wikipedia) Post’s footnote 8 cites Somerville 2019 Phys.org. Phys.org article does NOT contain this quote — needs correction.

Awards, organizations, personal

  • AGU William Bowie Medal 1976. Citation: Charney “guided the postwar evolution of modern meteorology more than any other living figure.” (Wikipedia Charney; verified by multiple sources.) Post footnote 1 (Phillips) is WRONG attribution.
  • AMS Jule Charney Medal: established. AGU Jule Charney Lecture: established. Both bear his name. (Common knowledge, Wikipedia)
  • GARP leader 1966-1971 (NAS Committee on the Global Atmospheric Research Program). (Phillips)
  • Phillips quote “the most ambitious international effort in weather research ever undertaken” — NOT FOUND VERBATIM in Phillips memoir. Phillips memoir uses “The most ambitious of these efforts began in May 1970” referring to UNAF (antiwar fund), NOT GARP. The post’s attribution of this phrase to Phillips about GARP is INCORRECT.
  • UNAF (Universities National Antiwar Fund) co-founded May 1970 with Jule + Lois + S. Luria after Cambodia invasion + Kent State May 4. Raised approximately $250,000 for antiwar candidates. (Phillips)
  • Charney hypothesis for Sahel desertification: 1975 with Quirk and Stone in Science. (Phillips bibliography)
  • Poker quote: B. Taft (oceanographer who worked with Charney on ship expeditions) recalled Jule “was the only scientist he knew who could play poker nightly with the ship’s crew, win their money consistently, and never engender the slightest ill will.” (Phillips memoir, exact) Post says “A colleague recalled…” which is acceptable abstraction.
  • Goody at 1982 memorial: “As a teacher Jule molded the thoughts of several generations of students. We shall be completing his thoughts and building upon them for a long time to come.” (Phillips, exact)
  • “Lectures were reportedly halting”: Phillips says “his lecture performance was often halting.” (Phillips) Match.

Primary sources (all fetched and extracted locally as PDFs)

  1. Phillips, N. A. (1995). Jule Gregory Charney 1917-1981: A Biographical Memoir. NAS Biographical Memoirs 66. https://www.nasonline.org/wp-content/uploads/2024/06/charney-jule-g.pdf
  2. Lynch, P. (2008). The ENIAC Forecasts: A Re-creation. BAMS 89:45-55. https://maths.ucd.ie/~plynch/Publications/ENIAC-BAMS-08.pdf
  3. Charney, Fjortoft, von Neumann (1950). Tellus 2:237-254. https://www.eas.ualberta.ca/jdwilson/EAS372_13/Charney_etal50.pdf (text-extractable copy)
  4. Lynch, P. (2022). Richardson’s Forecast: the Dream and the Fantasy. arXiv:2210.01674. https://arxiv.org/pdf/2210.01674
  5. Wikipedia Charney Report. https://en.wikipedia.org/wiki/Charney_Report
  6. Wikipedia Climate sensitivity (for Manabe 0.5 deg margin quote).

Wayback archive POST

  • web.archive.org/save fetch returned “Claude Code is unable to fetch from web.archive.org” — sources NOT archived to Wayback this session. User should manually archive at https://web.archive.org/save/ if desired.

ISSUES FOUND IN POST (see DRAFT_CORRECTION)

  1. Footnote 1 (Phillips) cited for the 1955 NAS quote — should be Charney 1955 NAS address.
  2. Footnote 1 (Phillips) cited for AGU 1976 citation — should be AGU William Bowie Medal 1976 citation.
  3. Footnote 1 (Phillips) cited for “most ambitious international effort in weather research ever undertaken” about GARP — this phrase is NOT in Phillips memoir. Verbatim phrasing not located in any source consulted.
  4. Footnote 8 (Phys.org Somerville 2019) cited for Manabe 0.5 deg margin quote — that quote is not in the Phys.org article. Original source is Manabe interview (2004) per realclimate / climate sensitivity Wikipedia.
  5. Minor: “Yiddish-speaking” parents — Phillips memoir does not state Yiddish; says immigrants from White Russia. Acceptable inference for Belarus-born Jewish immigrants of that era, but technically beyond Phillips.