On this day, July 29 1974 a World Meteorological Organisation conference on climate modelling began, running until 10 August.
As Bert Bolin (one of THE key figures) wrote in the foreword-
At the United Nations Conference on the Human Environment held in Stockholm in June 1972, it was emphasized that the earth’s climate is of basic importance to man and his well-being. Climatic variability and possible change are still essentially unpredictable although they are significant factors in the continued development of both industrialized and developing countries. Some of the most important problems that confront us were very well summarized in the SMIC report “Study of Man’s Impact on Climate”, (1) which was available at the UN conference and served as an important reference document. In recommendation 79d of the conference, it was recommended that the World Meteorological Organization (WMO) in co-operation with the International Council of Scientific Unions (ICSU) “continue to carry out the GARP (Global Atmospheric Research Programme) to better understand the general circulation of the atmosphere, the causes of climatic change and whether these causes are natural or the result of man’s activities”.
At its eighth session in London in March 1973, the JOC considered in detail the role of GARP for studies of climate and its fluctuations. It was proposed that the next step towards an active programme would be the organization of an International Study Conference on the Physical Basis of Climate and Climate Modelling….
The conference was held at Wijk outside Stockholm during the period 29 July to 10 August 1974 with a total attendance of about 70 scientists from different parts of the world. Their devoted work during two weeks has resulted in the present report.
https://library.wmo.int/doc_num.php?explnum_id=7112
Why this matters.
These were the building blocks – between 1970 and 1975 – when climate scientists patiently assembled the evidence, debated, refined. By about 1976/7 it was pretty clear what was coming, just a question of when (how fast, in what order). They did try to warn the politicians. And some of the politicians kinda sorta listened a bit.
What happened next?
The scientists kept at it. (Impact) Science is very very cool.. Some joined the dots, understood the implications, quicker than others. By 1979 the smarter ones were getting quite nervous….
