See NASA’s GUARDIAN Catch a Tsunami - NASA

A new data visualization illustrates how an experimental NASA technology can provide extra lead time to communities in the path of a tsunami. Called GUARDIAN

NASA

🛰️ New paper by Němec et al.: After analyzing ~10 years of #MAVEN wave data, the authors report a #lightning-like electromagnetic #whistler signal in the #Martian #ionosphere. Its frequency dispersion matches theoretical propagation through #Mars’ ionosphere and crustal magnetic fields, suggesting that electrical discharges may occur in the Martian #atmosphere.

🌍 https://doi.org/10.1126/sciadv.aeb4898

#PlanetaryScience #SpacePhysics

Using joint observations from the #Tianwen-1 in the #solarwind and #MAVEN in the induced #magnetosphere, Lin et al. identified a magnetic barrier between #Mars#ionosphere and shocked solar wind under the radial #IMF for the first time.

📄 https://doi.org/10.1016/j.xinn.2026.101312

#SpacePhysics #PlasmaPhysics #SolarSystem

An interesting article about the #ionosphere #sw #kurzwelle
I am still a shortwave noob.

#Shortwave #Radio Propagation and Seasonal Variations Explained – ICO Optics
https://www.ico-optics.org/shortwave-radio-propagation-and-seasonal-variations/

Shortwave Radio Propagation and Seasonal Variations Explained

Shortwave radio signals can cross continents, but they sure don’t behave the same way every month. Sunlight, temperature, and atmospheric […]

ICO Optics
#GNSS as affected by #ionosphere #spaceweather ... yep, still ongoing, Activity from today 20 January 2000 UTC / Black-to-white=quiet-to-active, blue=no_data.
#GNSS as affected by #ionosphere #spaceweather , Activity from today 19 January 2200 UTC / Black-to-white=quiet-to-active, blue=no_data.
#GNSS as affected by #ionosphere #spaceweather , Activity from today 19 January 2100 UTC / Black-to-white=quiet-to-active, blue=no_data.
#GNSS as affected by #ionosphere #spaceweather , Activity from today 19 January 2000 UTC / Black-to-white=quiet-to-active, blue=no_data.
#GNSS as affected by #ionosphere #spaceweather , Activity from today 19 January 1900 UTC / Black-to-white=quiet-to-active, blue=no_data.
... and if you are lucky (but only for very small values of luck) I might even make a movie of all the 2025 maps... #ionosphere #spaceweather