Resolution No. 1 (2019): World Data Center SILSO and the international sunspot number
The International Association of Geomagnetism and Aeronomy (IAGA)
- The importance of the long-running international sunspot number in an increasing number of studies into Solar Activity and related studies into Space Weather, Space Climate and Global Change in the Earth environment,
- The leadership role of the World Data Center SILSO (Sunspot Index and Long-term Solar Observations) in the production, collection, preservation and dissemination of the international sunspot number over several decades,
- Funding agencies to make every possible effort to continue the operation of the WDC-SILSO and the production of the International Sunspot Number in a long-term sustainable manner.