The Bloomberg Carbon Clock July 2021

The monthly values reflect the cyclical or seasonal changes in an inexorably upward secular trend. Check out the graph of long-term trends on the webpage cited below. 

 *The International Geophysical Year [IGY] started in July 1957 and extended through December 1958. Scientists from around the world measured every sort of geophysical feature to establish a base line for future environmental studies. In April 1957, just three months before the IGY began, scientists representing the various disciplines of the IGY established the World Data Center system. The United States hosted World Data Center “A” and the Soviet Union hosted World Data Center “B.” World Data Center “C” was subdivided among countries in Western Europe, Australia, and Japan.[18] Today, NOAA hosts seven of the fifteen World Data Centers in the United States.