[HCARC] Tech Corner for May - references

Sat May 9 22:07:16 EDT 2015

I don't follow it much, but here is one I've been seeing on hamnation

http://spaceweather.tv/

-----Original Message-----
From: HCARC [mailto:hcarc-bounces at mailman.qth.net] On Behalf Of Kerry
Sandstrom
Sent: Saturday, May 09, 2015 9:03 PM
To: HCARC Reflector
Subject: [HCARC] Tech Corner for May - references

Hi Guys,

Here are the web sites I use:

www.SolarMonitor.org

www.lmsal.com/solarsoft/last_events

www2.hao.ucar.edu/mlso/mlso-home-page

sidc.oma.be

umbra.nascom.nasa.gov/newsite/images.html

www.txarmymars.org/resources/solarweather.php

I usually start with the TX Army MARS site as it includes most of the data I
use from several sites.  The SIDC site has sunspot drawings and often a
short article on some aspect of solar activity.  It is located in Belgium.
The NASA site is where I get the 171 and 304 Angstrom images as well as the
magnetic field image and the visible image.  The images on this site are all
from a satellite.  Most of these spectral lines can't get through our
atmosphere.  The MLSO site is Muana Loa in HI.  That is where I get the
H-alpha images.  I usually go to the GONG H-alpha area and that lets me see
the latest images from whichever sites are currently seeing the sun.  There
are sites from Australia, HI, Spain, Chile, CA, etc.  Almost always someone
has a clear view of the sun.  One choice is to see a "movie" of a period of
time when events occurred.  The Solar Soft site is Lockheed-Martin.  The
main thing I get hear is a list of recent flares although there is a lot of
other interesting data here.  The Solar Monitor site has a lot of images and
other data that is from other sites.  It is a different presentation of the
data.

A couple cautions - the sunspot plots are reversed relative to the images.
I guess it is historical.  The sunspot plot guys try to make their data
compatible with the sunspot observations of a hundred or more years ago.
They use small telescopes and don't use the magnetic field data to classify
the groups.  I don't use the sunspot plots much myself.  Better data is
available.  You will see lots of mentions of CME's (Coronal Mass Ejections).
Most of what gets ejected is protons.  
The solar wind is primarily protons and is hitting us all the time.  
There are about a thousand CME's a year on average.  During periods of high
solar activity there are more and during low periods there are less.  Only a
very small percentage actually hit the earth and of those most have very
minor effects.  a CME is nothing to really be concerned about.

If you have any questions, send me an e-mail.  I enjoyed talking to you all
about the sun and propagation and perhaps we can have a follow on session if
you would like.

Kerry
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