Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 15, issue 21
Articles | Volume 15, issue 21
https://doi.org/10.5194/amt-15-6387-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-15-6387-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 21
Research article
 | 
08 Nov 2022
Research article |  | 08 Nov 2022

Long-distance propagation of 162 MHz shipping information links associated with sporadic E

Alex T. Chartier, Thomas R. Hanley, and Daniel J. Emmons

Data sets

GNSS and Digisonde sporadic-E maps produced by Air Force Institute of Technology Daniel J. Emmons https://zenodo.org/record/6977022#.Yz3iP-zMJb9

Tropospheric ducting maps Thomas R. Hanley and Alex T. Chartier https://doi.org/10.5281/zenodo.7140002

FastChar - Digital Ionogram Data Base (DIDBase) Global Ionosphere Radio Observatory http://giro.uml.edu/didbase/scaled.php

COSMIC-2 Data Products UCAR COSMIC Program https://doi.org/10.5065/t353-c093

Model code and software

AMT sporadic E paper code release Alex T. Chartier https://doi.org/10.5281/zenodo.7278089

Video supplement

Long distance AIS links associated with sporadic-E Alex T. Chartier https://www.youtube.com/watch?v=AcNzM03zZP8

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Short summary
This is a study of anomalous long-distance (>1000 km) radio propagation that was identified in United States Coast Guard monitors of automatic identification system (AIS) shipping transmissions at 162 MHz. Our results indicate this long-distance propagation is caused by dense sporadic E layers in the daytime ionosphere, which were observed by nearby ionosondes at the same time. This finding is surprising because it indicates these sporadic E layers may be far more dense than previously thought.
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