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Message from M. Jarraud, Secretary-General of the World Meteorological Organization Every year, on 23 March, the World Meteorological Organization (WMO), its 187 Members and the worldwide meteorological community celebrate World...
Records of ancient civilizations contain innumerable references to weather and climate and rudimentary but ingenious instruments were devised by different cultures to observe the basic meteorological parameters, often in conjunction with astronomy and astrology.
Every year, the World Meteorological Organization (WMO) and the international meteorological community celebrate World Meteorological Day, commemorating the coming into force of the WMO Convention on 23 March 1950, precisely 30 days after the date of deposit of the 30th instrument of ratification or accession by Members.