It includes a growing number of initiatives at the international and European level, from research networks of data providers, operational services, impact assessments, to coordination of government initiatives and provision of policy - relevant recommendations; all provided on a wide range of timescales, from few years to decades and more, referring to the past, the present and the near to far future. (climateurope.eu)
The geomagnetic field varies on a wide range of timescales. (nature.com)