GUARDIAN- Monitoring Earth’s Ionosphere for Natural Hazards in Near Real-Time

Several natural phenomena on Earth and in space, such as tsunamis, volcanic eruptions, earthquakes, and geomagnetic and solar storms leave a readily detectable signature in Earth's ionosphere. Monitoring the ionosphere in real-time can greatly enhance our early warning systems for these events. Traditionally, the ionospheric response to these sources has been studied several days to weeks after an event occurs. For the ionosphere to be used as a medium for hazard warning, it must be monitored in near real-time (NRT) with analyses provided in a timelier fashion.
The GNSS-based Upper Atmospheric Realtime Disaster Information and Alert Network (GUARDIAN) is a state-of-the-art NRT monitor designed to provide estimates of the ionospheric line of sight total electron content (TEC) from L-band radio-frequency signals transmitted by the Global Navigation Satellite System (GNSS) constellation of satellites. The GUARDIAN team combines, cleans, and filters phase data to generate TEC time-series for multiple constellations from nearly 90 stations around the Pacific Ring of Fire with an approximate latency of 3 minutes. GUARDIAN builds on NASA's Jet Propulsion Laboratory (JPL) Global Differential GPS (GDGPS) capability and the International GNSS Service (IGS) network, which aggregates GNSS phase data from a network of real-time worldwide stations.
In this presentation, we discuss the architecture of the GUARDIAN system, highlight several examples and use cases, and share future plans for its development, with the hopes of enhancing existing hazard warning frameworks to safeguard communities around the world.
*Access GUARDIAN system: guardian.jpl.n...
*To learn more about space geodesy datasets, services, and tools visit NASA's Crustal Dynamics Data Information System (CDDIS) at: cddis.nasa.gov
*Presentation Slide Deck: go.nasa.gov/3Z...

[@elderizm]

Why did DYNG station stop uploading realtime data? Please I need that data. Thank you.

[@NASAEarthdata]

Hi there, thank you for your message. Has this issue been resolved? If not, we will look into it and get back to you.

[@elderizm]

​@@NASAEarthdata Hello thank you. Yes, indeed, there seems to be an issue ongoing. GNSS data haven't been receiving in realtime from the DYNG station for a while. Data source : cddis.nasa.gov/archive/gnss/products/realtime/jpl_ionosphere/2024/

[@elderizm]

@@NASAEarthdata Hello thank you. Yes, indeed, there seems to be an issue ongoing. GNSS data haven't been receiving in realtime from the DYNG station for a while.

[@NASAEarthdata]

@@elderizm I have asked the CDDIS to look into this. However, please always feel to reach out via the following options when you need assistance.
Earthdata Forum: To interact with other users and NASA subject matter experts from across the DAACs on a variety of Earth science research and applications topics, including Space Geodesy, go to the Earthdata Forum.forum.earthdata.nasa.gov
CDDIS User Support: [e-mail]: Submit questions to this email address to log a ticket with their user support team.
CDDIS GNSS real-time data castor help Email: [e-mail].

[@elderizm]

@@NASAEarthdata Thank you. I will wait a bit longer for the issue to be resolved impatiently otherwise, I will send an e-mail. By the way I asked a question on the cddis forum page about a different topic two days ago but it's awaiting moderator approval. 😄 I'm glad there was faster interaction here. Thank you again and I'm grateful for what you're doing for humanity. 💙