WMO:The official website of the World Meteorological Organization is WMO is a specialized agency of the United Nations World Meteorological Organization, founded in Vienna in 1873, and is an international institution for the development of meteorological operations and cooperative activities in meteorological science among the governments of the world.

The World Meteorological Organization was convened in Washington, D.C., in September-October 1947. In October 1947 in Washington, D.C., the International Meteorological Organization meeting of meteorological secretaries renamed the World Meteorological Organization. Its predecessor, the International Meteorological Organization (IMO), was officially established in 1878 as an unofficial body after two international conferences held in Leipzig and Vienna in 1872 and 1873 respectively.

In September 1947 in Washington, the meeting of meteorological secretaries, adopted the draft of the World Meteorological Convention, March 23, 1950 the Convention came into force, the International Meteorological Organization was renamed the World Meteorological Organization. March 19, 1951 in Paris, the first General Assembly of the World Meteorological Organization. Formal establishment of the organization. In December of the same year, became a specialized agency of the United Nations.

World Meteorological Organization was established 45 years ago, the membership has grown to more than one hundred and sixty, the work has also made many achievements. The Global Ozone Observing System, which began in 1957, has gone through 30 years of painstaking coordination and standardized observations, and finally led to the signing of the Montreal Protocol on the protection of the ozone layer by many countries in 1987.