WCRP Workshop on Drought Predictability and Prediction in a Changing Climate, Barcelona, Spain 2-4 March 2011

International CLIVAR Project Office, .

International CLIVAR Project Office

来源: NERC Open Research Archive

【 摘 要 】

This bulletin contains the monthly preliminary observatory results, published to meet the needs of all users of geomagnetic data. Magnetic observatory data are presented as a series of plots of one-minute, hourly and daily values, followed by tabulations of monthly values, geomagnetic activity indices and reports of rapid variations. The operation of the observatory and presentation of data are described in the introduction.