Space physics textbook
- for basic but more detailed introduction/explanations of solar-geophysical
phenomena including aurora and magnetic activity with some fine illustrations
Sunspots and Solar Cycle
excellent basic introduction sponsored by NASA
Educational Material from
the IPS explaining The Sun, Solar Cycle, Solar Minimum and the Next
Cycle, the Earth's Magnetic Field and the Effects of the Solar Cycle
FAI Propagation - explanation of the characteristics and geometry
of Field Aligned Irregularity propagation with map of contacts and bibliography
by IC8FAX
Space Weather
primer - brief explanation of the relationship between the sun
and earth with excellent pictures and diagrams from Rice University.
A basic introductory site on weather-related VHF/UHF propagation
is provided by BBC Engineering
. Topics covered include the atmosphere, troposphere, VHF/UHF Propagation
and temperature inversions
Propagation - excellent
site offers current solar indices, 24-hour and 3-day forecasts, near-realtime
map/plots of global MUFs, GOES X-ray flux, auroral activity, solar
images and the current greyline
Solar-Terrestrial Activity
Page - another excellent site with daily plots of Planetary A,
Flux and SEC Sunspot numbers, a commentary on developing solar phenomena
and how these may affect radio propagation
Space Weather
from Rice University - 'red', 'amber' or 'green' assessment of
conditions affecting propagation: Latest Kp, WIND data and USAF forecast
plus 'dials' showing latest solar wind density, speed and pressure,
the interplanetary field magnitude, polar angle and azimuth and magnetosphere
response. In short, the current situation at a glance
Propagation
- latest SSN, flux, A, K figures, near-real-time fof2 map for USA
and links to auroral activity, alerts, current and medium-range forecasts
BeaconClock program for Windows 95 to assist checking NCDXF
beacons. Indicates the next five beacons scheduled to transmit
on your selected band, with callsigns, SP and LP beam headings
and distance in km. Updated every 10secs. From S R Huntting Inc
Active Beacon Wizard
displays the currently active NCDXF beacon on a topographic map
along with the solar terminator
BeaconSee
program - monitors/displays graphically reception of the NCDXF
beacons
IPS auroral alert e-mail service, flags auroras at lower-than-usual
latitudes. To subscribe either click
'mail-lists' at the IPS site or e-mail majordomo@ips.gov.au with
message subscribe rwc-aurora-alert your_email_address
Aurora
forecast maps from Fairbanks Geophysical Institute. Can also be
found here. The
forecasts are for the Fairbanks area. This site also holds auroral
animations and video
Solar Activity Plotting
Program WA4TTK offers this program (v3.01), which is said to
update solar flux and sunspot number databases automatically when
it scans new propagation bulletins.
Meudon Observatory
includes Monthly Kp from Gottingen, monthly SIDC Data from Brussels,
charts of 10cm solar flux for last 25 days with forecast for next
three days
Images from the Solar & Heliospheric Observatory is
available from NASA. SOHO is about 1 million miles from earth, on
the sunward side, at the point where the earth's and sun's gravitational
pull are equal. Striking images and simulations.
Daily USAF/NOAA HF Forecast, 27-day forecasts e-mail to prop-request@digimark.net
with message Subscribe propagation forecast as from the Central USA,
posted here monthly and archived since February 1988.
