Personal Space Weather Station

PSWS Overview

ThePersonal Space Weather Station project ultimately aims to create a small, multi-instrument system that can make ground-based measurements of the space environment.  The observations from this project will not only be useful to the owner of the system, but also aggregated into a central database for space science and space weather research purporses. Initial work focuses on the development of a scientific-grade high frequency (HF) radio receiver, as well as the necessary software and network infrastructure. This project is led by the The University of Scranton, in collaboration with the Tucson Amateur Packet Radio, Inc. (TAPR), Case Western Reserve University / Case Amateur Radio Club W8EDU, the University of Alabama, the New Jersey Institute of Technology Center for Solar Terrestrial Research (NJIT-CSTR), and the Massachusetts Institute of Technology Haystack Observatory.

PSWS Components

The Personal Space Weather Station is a modular system, with each module being developed by a different team. Visit the links below to learn about the different parts of the PSWS.

HamSCI Actively Soliciting Host Sites for Grape 1 and Grape 2 PSWS

June 2023:  HamSCI is actively soliciting host locations for Grape Personal Space Weather Stations. Each Grape PSWS consists of a small shortwave radio receiver, stealthy antenna, GPS receiver and and single board computer (for data processing and uploading data to the Internet). Grape data will be used by HamSCI researchers and citizen scientists to answer questions regarding the Earth's ionosphere, the region of charge particle that exists between 80 and 300km above the Earth's surface.  The behavior of the ionosphere is important to many radio services, including global navigation and broadband Internet via satellite.

Grapes measure Doppler shift while receiving standard frequency stations such as WWV (Boulder, CO), WWVH (Island of Kauai, HI) and CHU (Ottawa, ON).  HamSCI's goal is to blanket the US and nearby Canadian provinces with Grapes, forming a distributed array of scientific instruments.  They should be in place well before the October, 2023 North American solar eclipse and remain in service until well past the April, 2024 eclipse.  Grapes come in two flavors:  Grape 1 (build it yourself) and Grape  2 (commercially built, estimated availability: Q3, 2023).   Please visit the HamSCI Grape pages for details, and, if interested, complete the Grape Hosting Interest Survey at the bottom of the Grape 2 page.

Research Questions

The PSWS project is motivated by questions both from the amateur radio and science communities.

Science Questions

  • How does the ionosphere respond to inputs from space and from the neutral atmosphere?
  • How does the ionosphere couple with the neutral atmosphere and with space?
  • What are the sources of medium and large scale traveling ionospheric disturbances?
  • What are the causes of Sporadic E?

Amateur Radio Questions

  • How do disturbances such as solar flares, geomagnetic storms, and traveling ionospheric disturbances affect radio wave propagation?
  • How does ionospheric science help amateur radio operators improve communications?
  • How can I make measurements in my own backyard that will help improve my amateur radio operations?

Get Involved

We are always looking for new people to get involved! Projects include system design and testing, data acquistion, and data analysis. Visit our Get Involved page to learn how to join the HamSCI Community.

PSWS Resource Links

Please visit the Space Weather Station Working Page for a variety of links and resources related to the HamSCI PSWS Project.

Acknowledgments

We gratefully thank the many volunteers who make this project run, as well as the support of National Science Foundation Grants AGS-2002278, AGS-1932997, and AGS-1932972.

 

Grape 1 Personal Space Weather Station

Grape Personal Weather Station Network Continues its Growth

Wednesday, August 2, 2023 - 14:23
Submitted 2 months 8 hours ago by af8a.

Dozens of Grape Personal Space Weather Stations are now on the air, and the network is growing on a regular basis.  In the last week, stations in Cleveland, OH and Jacksonville, FL were added to the Grape network.  They were Node numbers 63 and 64, respectively.  You can learn more about the Grape 1, including all of the details needed to build, operate and contribute data to the HamSCI PSWS Grape Server here.  The full Grape story, with links to the Grape 1 and the  up and coming Grape 2 are here on the HamSCI site.

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SAQ scheduled to air on Alexanderson Day, July 2nd, 2023

Friday, June 9, 2023 - 13:11
Submitted 3 months 3 weeks ago by w2naf.

By Jonathan Rizzo, KC3EEY

SAQ (callsign SAQ) is a VLF transmitting station located in Grimeton, Sweden and is a UNESCO World Heritage Site operated by the Alexanderson Association. The heart of the transmitter is the Alexanderson Alternator and six antenna towers that are iconic to the site. Twice a year, there is a CW transmission at 17.2 kHz with an inspirational message to listeners all over the world. On Alexanderson Day, July 2nd, 2023, SAQ is scheduled to be on the air. More details can be found here (https://alexander.n.se/en/alexanderson-day-2023/) and contains a tentative schedule and a YouTube live broadcast for those who would like to watch the event live.

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Paper on Grape Personal Space Weather Station HF Doppler Observations Published

Friday, March 31, 2023 - 08:09
Submitted 6 months 4 days ago by w2naf.

Dr. Kristina Collins, KD8OXT, is the lead author on a new paper published in the peer-reviewed journal Earth System Science Data entitled Crowdsourced Doppler measurements of time standard stations demonstrating ionospheric variability. The Grape Personal Space Weather Station is a low-cost, high frequency (HF) receiver designed to make precision measurements of signals received from frequency standards stations such as WWV, WWVH, and CHU. Because these standards stations transmit carriers with atomic-clock grade frequency stability, and the Grape receiver achieves similar frequency stability through the use of a GNSS Disciplined Oscillator, variations in the received signal can be attributed to changes in the ionosphere. The new paper demonstrates this in multiple ways, including showing changes in Doppler frequency due to the dawn and dusk terminators, seasonal variations, wave signatures with Medium Scale Traveling Ionospheric Disturbance periods, and the ionospheric response to solar flares. The paper also explains how to access Grape data and the open-source software used to conduct the analysis. The co-author team consists of professionals, students, and HamSCI volunteers, including Kristina Collins KD8OXT, John Gibbons N8OBJ, Nathaniel Frissell W2NAF, Aidan Montare KB3UMD, David Kazdan AD8Y, Darren Kalmbach KC0ZIE, David Swartz W0DAS, Robert Benedict KD8CGH, Veronica Romanek KD2UHN, Rachel Boedicker AC8XY, William Liles NQ6Z, William Engelke AB4EJ, David G. McGaw N1HAC, James Farmer K4BSE, Gary Mikitin AF8A, Joseph Hobart W7LUX, George Kavanagh KB1HFT, and Shibaji Chakraborty KN4BMT. The Grape receivers are the focus of an NSF-funded experiment to study the upcoming 2023 annular and 2024 total solar eclipses. More information on building your own Grape receiver is available at hamsci.org/grape.

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