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Real-time Ionospheric High Frequency (HF) Vertical Signal Loss Calculated from the AbbyNormal model

These plots are using NOAA-SEC GOES X-ray 5 minute averaged real-time data, as well as NOAA-SEC F10.7 and kp solar index values.

This page was loaded at Thu Sep 23 14:37:17 UTC 2021 and will reload in two minutes. Images are updated every 5 minutes.

Image features: : Each global plot shows the calculated total HF signal loss in decibels as a function of geographic longitude and latitude on a map of the continents. The dB loss is the integrated for the vertical transit. Shown is the variation in the signal loss as a function of frequency, for 2.5 MHz, 5 MHz, 10 MHz and 20 MHz.

Frequency of 2.5 MHz
2.5 MHz Absorption

Frequency of 5 MHz
5.0 MHz Absorption

Frequency of 10 MHz
10.0 MHz Absorption

Frequency of 20 MHz
20.0 MHz Absorption

Model: AbbyNormal by Vince Eccles, Space Environment Corporation

Relevant Publications:
Eccles, J. V., R. D. Hunsucker, D. Rice, and J. J. Sojka, Space weather effects on midlatitude HF propagation paths: observations and a data-driven D-region model, Space Weather, 3, S01002, doi:10.1029/2004SW000094, 2005

National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

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