David Archibald on – The State of the Sun – 16th June, 2009 June 20, 2009Posted by honestclimate in sunspots.
Tags: climate change, david archibald, global warming, solar, sun, sunspots
David Archibald on – The State of the Sun – 16th June, 2009
June 16th, 2009 by Warwick Hughes
The Ap Index is heading down sharply.
The F10.7 flux is flatlining. Note that the volatility has gone out of it
The rate of decline of the heliospheric current sheet suggests that the month of solar minimum may be still a year off.
Like the Ap Index, the Interplanetary Magnetic Field recently headed down sharply.
The Oulu neutron count is trending up steeply. If the month of solar minimum is still a year off, the neutron count can be expected to continue rising for another two years.
Solar wind flow pressure is going to new lows.
The Sun has gone very quiet and several indicators of activity are still heading down. Solar Cycle 23 may end up being 14 years long. Solar activity modelling that I have recently become aware of suggests that the Sun will have very low activity until 2016.