Topband: COSMIC RAY UPDATE
btippett at alum.mit.edu
Sat Dec 14 22:27:47 EST 2019
Could be that good conditions are just ahead but they better hurry up. The
6 years of >100k scores in the last cycle versus none so far in this one
seems to indicate something is very different about this cycle compared to
the last one. If this cycle is 11 years, we should have seen much better
conditions beginning in 2016 (2005 + 11 = 2016). 2005 was actually the
best year for CQWW results. I remember it well and there has been nothing
comparable so far (i.e. 2016-2019). If I had time I would look at the CQWW
multi-multi scores for 160 to see if they correlate with single band
scores. Maybe someone else will have a look and include at CQ160 scores as
73, Bill W4ZV
On Sat, Dec 14, 2019 at 8:13 PM Nicholas Hall-Patch <nhp at ieee.org> wrote:
> But doesn't the graph referenced in your link
> https://spaceweather.com/repeat_images/crinfo2.png indicate that the
> greatest strength from cosmic rays was 2009-2010, when trans polar
> conditions were at their best, Bill?
> I'd defer to K9LA's comments in a heartbeat, but isn't the one (the
> primary?) reason for greater penetration of cosmic rays the weakening
> geomagnetic activity that occurs during solar minimum, and that's related
> to the intensity and speed of the solar wind, driven by coronal mass
> ejections and such like. According to
> https://www.swpc.noaa.gov/products/solar-cycle-progression, we are only
> now approaching the low levels of geomagnetic activity (Ap progression
> chart) seen in 2009 / 2010. Of course we may never reach those levels.
> We have to wait and see.
> best wishes,
> On Sat, Dec 14, 2019 at 6:24 PM Bill Tippett <btippett at alum.mit.edu>
>> This could account for relatively poor conditions on 160 despite the low
>> and K indices:
>> *COSMIC RAY UPDATE:* Something ironic is happening in Earth’s atmosphere.
>> Solar activity is low–very low. Yet atmospheric radiation is heading in
>> opposite direction. Cosmic rays percolating through the air around us are
>> at a 5 year high and only percentage points away from a Space Age record.
>> Find out what's happening on today's edition of Spaceweather.com
>> 73, Bill W4ZV
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