Publications

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2025
M. Lou West, Frissell, N., Mikitin, G., Popelas, G., Wilcox, R., Denton, M. K., Spalletta, R., Engelke, W., Griffiths, G., and Cerwin, S., “Analysis by Citizen Scientists of Doppler Radio Observations of the April, 2024 Solar Eclipse”, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.
R. Gerzoff and Griffiths, G., “Distributional Characteristics of Short-Term 2022 20-Meter Sequential Matched WSPRDaemon Noise Observations”, HamSCI Workshop. HamSCI, Newark, NJ, 2025.
R. Potter, Tormann, N., Zakzewski, C., Mokhtari, M., Frissell, N., Martin, K., McLynch, J., Kim, H., Perry, G., McGaw, D., LaBelle, J., Godfrey, T., Hartje, M., Griffiths, G., Robinett, R., and Elliott, P., “How Do We Put a HamSCI Personal Space Weather Station in Antarctica?”, HamSCI Workshop. HamSCI, Newark, NJ, 2025.
M. Hauan, Elmore, G., Robinett, R., Griffiths, G., Witten, D., Grunow, U., and Turner, C., “Interim Findings of the HamSCI DASI2 HF Antenna Project”, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.
G. Griffiths and Worsnop, J., “Monitoring tropospheric propagation at 24 GHz: A pilot study”, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.
G. Griffiths, “Post-sunset sporadic F propagation: A sign of electron density isopleth convergence?”, HamSCI Workshop. HamSCI, Newark, NJ, 2025.
G. Griffiths, “Sunrise: A natural perturbation enables identification of propagation modes from distinct Doppler shifts”, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.
2024
G. Griffiths, “Analysis of changes to propagation and refraction height on specific paths induced by the 14 October 2023 eclipse”, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.
G. Griffiths, Diehl, D., R. Rhymes, L., and Wahl, F., “Ray-trace modelling of diurnal variation in two-hop sidescatter propagation”, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.
K. Hozumi, Frissell, N. A., Chou, M. - Y., Griffiths, G., Engelke, W. D., Yue, J., Fung, S., and Kuznetsova, M., “Trial of applying PHaRLAP raytracing to reproduce Ham spot data”, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.
2023
Z. Shah, Griffiths, G., Robinett, R., and Frissell, N., “How Do I Talk From Scranton to Pakistan Using​ High Frequency Amateur Radio?​”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
G. Griffiths, “Identifying 14 MHz Propagation Modes Using FST4W SNR and Spectral Spread”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
2022
G. Griffiths and Elmore, G., “Contrasting effects of the 3-5 November 2021 geomagnetic storm on reception in Colorado of WSPR transmissions from North-Eastern North America with those from Australia”, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.
2021
G. Griffiths and Robinett, R., “Visualising propagation to mid-latitudes from a shipboard WSPR transmitter on a passage from 27˚N to 70˚S using the WsprDaemon database, and how to access the data”, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.
2020
G. Griffiths, Robinett, R., Elmore, G., Turner, C., Bunch, T., and Benischek, D., “Patterns in Received Noise: Methods, Observations and Questions (ePoster)”, in HamSCI Workshop 2020, Scranton, PA, 2020.