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For solar observers and those in the business of forecasting the solar-terrestrial environment, the end of a solar cycle and the anticipation of a new one brings a feeling of excitement along with some regret at seeing the end of an era. ... Solar Cycle Number 22 in Review: 7 June 1998;
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standeyo.com/Geo_Solar/Solar_Cycles_22_23/Solar_cycle_2...
standeyo.com/Geo_Solar/Solar_Cycles_22_23/Solar_cycle_22.html
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The 11 year sunspot cycle is related to a 22 year cycle for the reversal of the Sun's magnetic field. In 1848 Johann Rudolf Wolf devised a method of counting sunspots on the solar disk called the Wolf number. Today the Wolf number (averaged from many observing sites) is used to keep track of the solar cycle.
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www.windows.ucar.edu/tour/link=/sun/activity/solar_cycl...
www.windows.ucar.edu/tour/link=/sun/activity/solar_cycle.html
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May 8, 2009 -- The Solar Cycle 24 Prediction Panel has reached a consensus decision on the prediction of the next solar cycle (Cycle 24). First, the panel has agreed that solar minimum occurred in December, 2008. This still qualifies as a prediction since the smoothed sunspot number is only valid through September,
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www.swpc.noaa.gov/SolarCycle/
www.swpc.noaa.gov/SolarCycle/
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The objective of the Solar Cycle 23 Project is to survey forecasts for the amplitude and phasing of the most common indicators of solar and geomagnetic activity (Sunspot Number, 10.7 cm solar flux, aa, Ap) for Solar Cycle 23 and to recommend a forecast or group of forecasts for operational use.
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www.swpc.noaa.gov/info/Cycle23.html
www.swpc.noaa.gov/info/Cycle23.html
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Home Educational Solar Cycle Solar Cycle Number 22 (1986 - 1996) in Review ... This comparison indicates that Region 6659 in June 1991 easily heads the list of solar regions, surpassing even the March 1989 region. The present solar cycle (Number 22) is well represented with 6 out of the 15 flares in the list,
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www.ips.gov.au/Educational/2/3/2
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SOLICITATION# : F3QCCL7212A001 ? Laboratory Testing Services for Solar Radiation Test (Solar Cycle), is issued as a Request for Quote using Simplified Acquisition Procedures under the test program for certain commercial items found at FAR Part 13.5. ... Solicitation Number: Reference-Number-F3QCCL7212A001...
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www.fbo.gov/spg/USAF/AFMC/WRALC/Reference-Number-F3QCCL...
www.fbo.gov/spg/USAF/AFMC/WRALC/Reference-Number-F3QCCL7212A001/listing.html
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Unless official multidecadal mapping is done, differences in solar cycle number will be sources of controversies and blunders (19). Alternatively, the systematic psycho-physiologic, demographic and ongoing environmental monitoring will open new perspectives concerning the mechanism, both of the diseases of individuals,
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chrono.umin.jp/htm/H200110.htm
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Predicting the behavior of a sunspot cycle is fairly reliable once the cycle is well underway (about 3 years after the minimum in sunspot number occurs [see Hathaway, Wilson, and Reichmann Solar Physics; 151, 177 (1994)]). Prior to that time the predictions are less reliable but nonetheless equally as important.
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solarscience.msfc.nasa.gov/predict.shtml
solarscience.msfc.nasa.gov/predict.shtml
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Although sunspots themselves produce only minor effects on solar emissions, the magnetic activity that accompanies the sunspots can produce dramatic changes in the ultraviolet and soft x-ray emission levels. These changes over the solar cycle have important consequences for the Earth's upper atmosphere.
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solarscience.msfc.nasa.gov/SunspotCycle.shtml
solarscience.msfc.nasa.gov/SunspotCycle.shtml
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