'This allows very sensitive (sub nanotesla) measurements of magnetic declination during geomagnetic storms.' 'The sensor is buried in my garden about 0.5 meters below ground in an East/West orientation,' he explains. Green built his own magnetometer from scratch. The constant 'drumbeat' of CMEs shows that Solar Cycle 25 is continuing to develop nicely.' 'Their geomagnetic effect was generally weak, but nevertheless sufficient to be detected on my magnetometer here in the UK. 'Our crackling sun released multiple minor CMEs over the past week,' says Green.

Stuart Green's magnetometer in Lancashire, England, recorded every impact: The sun hurled so many CMEs into space that scarcely a day went by without one hitting Earth. MAGNETOMETERS ARE GETTING RESTLESS: Last week, solar activity was high. No more than minor G1-class geomagnetic storms are expected. Relatively faint and slow-moving, it was hurled into space on May 12th by an erupting filament of magnetism in the sun's southern hemisphere. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays.Ī MINOR CME IS COMING: NOAA forecasters say that a CME could hit Earth's magnetic field on May 16th. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. These instabilities could lead to solar flare activity. Sunspot AR3305 is in a state of turmoil, with sub-spots rapidly appearing and disappearing.

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