* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download For a given CA II K-line index there are too few sunspots
Magnetosphere of Jupiter wikipedia , lookup
Maxwell's equations wikipedia , lookup
Negative-index metamaterial wikipedia , lookup
Magnetosphere of Saturn wikipedia , lookup
Electromagnetism wikipedia , lookup
Friction-plate electromagnetic couplings wikipedia , lookup
Superconducting magnet wikipedia , lookup
Edward Sabine wikipedia , lookup
Mathematical descriptions of the electromagnetic field wikipedia , lookup
Geomagnetic storm wikipedia , lookup
Lorentz force wikipedia , lookup
Magnetic stripe card wikipedia , lookup
Giant magnetoresistance wikipedia , lookup
Magnetic monopole wikipedia , lookup
Neutron magnetic moment wikipedia , lookup
Magnetic nanoparticles wikipedia , lookup
Magnetometer wikipedia , lookup
Electromagnetic field wikipedia , lookup
Earth's magnetic field wikipedia , lookup
Magnetotactic bacteria wikipedia , lookup
Magnetotellurics wikipedia , lookup
Force between magnets wikipedia , lookup
Electromagnet wikipedia , lookup
Geomagnetic reversal wikipedia , lookup
Multiferroics wikipedia , lookup
Magnetoreception wikipedia , lookup
Magnetochemistry wikipedia , lookup
For a given CA II K-line index there are too few sunspots after 2000 The Plage index is MWO’s Magnetic Plage Strength Index MPSI: For each magnetogram taken at the 150-Foot Solar Tower, a Magnetic Plage Strength Index (MPSI) value is calculated. To determine MPSI we sum the absolute values of the magnetic field strengths for all pixels where the absolute value of the magnetic field strength is between 10 and 100 gauss. This number is then divided by the total of number of pixels (regardless of magnetic field strength) in the magnetogram. The MPSI has been scaled by Luca Bertello to match the Ca II K-index. The calibration after 1986 is believed to be good. The rising phase seems to be slightly higher than the declining, but the overall trend is a decline of sunspot numbers compared to the plage index. Same result if using MWO’s MPSI directly: The Sunspot Number is dropping SSN obs / SSN* 4 SSN* = 53.901 MPSI 1.0195 3.5 dy = -0.035 dx 3 2.5 2 1.5 1 0.5 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 We show the ratio between observed SSN and the linearized MWO Plage Index For a given F10.7 flux there are too few sunspots after 2000 Since at least 2000 the magnetic field of spots has steadily decreased Livingston & Penn Effect