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[CQ-Contest] Three day forecast of the Planetary Kp Index now available

To: cq-contest <cq-contest@contesting.com>
Subject: [CQ-Contest] Three day forecast of the Planetary Kp Index now available online
From: donovanf@erols.com
Date: Fri, 24 Jul 2020 14:28:01 -0400 (EDT)
List-post: <mailto:cq-contest@contesting.com>


Daily variability of HF propagation is caused in large part by solar energetic 
particle radiation carried by the solar wind, especially during the four years 
closest to solar minimum when x-ray and proton radiation from solar flares are 
less frequent and less intense. 

The three-hourly Planetary Kp Index uses geomagnetic measurements from 13 
observatories at mid-latitudes to indirectly measure solar energetic particle 
radiation. The Planetary Kp Index is a proxy measurement of the energy input 
from the solar wind to Earth, similar to the use of the 2800 MHz Solar Flux 
Index as a proxy for the Sun's ionizing ultraviolet radiation. 


A three day -- updated every three hours -- forecast of the Planetary Kp Index 
is now available from the Helmholtz Centre Potsdam - GFZ German Research Centre 
for Geosciences. 


spaceweather.gfz-potsdam.de/fileadmin/ruggero/Kp_forecast/forecast_figures/KP_FORECAST_CURRENT.png
 


73 
Frank 
W3LPL 
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