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48329
From: Eve, [DNS_Address]
Subject: June 8th Solar Radiation Was Strongest Since 2017
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June 8th Solar Radiation Was Strongest Since 2017 published: Monday, June 10, 2024 15:29 UTC The strong solar radiation storm on Saturday (June 8th) was the strongest solar radiation or "S" storm since September 2017. 
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48330
From: chaskuchar@stcharlesmo, [DNS_Address]
Subject: Re: June 8th Solar Radiation Was Strongest Since 2017
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does it affect magnetism? to me, that is important. (my autocorrect is helping my spelling with this numb left hand) |
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[48331]
48331
From: Eve, [DNS_Address]
Subject: Re: June 8th Solar Radiation Was Strongest Since 2017
URL: https://www.swpc.noaa.gov/phenomena/solar-radiation-storm
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Yes. Found a short article to share with you from the NOAA link ... hope this helps. ~Eve ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SOLAR RADIATION STORM Solar radiation storms occur when a large-scale magnetic eruption, often causing a coronal mass ejection and associated solar flare, accelerates charged particles in the solar atmosphere to very high velocities. The most important particles are protons which can get accelerated to large fractions of the speed of light. At these velocities, the protons can traverse the 150 million km from sun to Earth in just 10’s of minutes or less. When they reach Earth, the fast moving protons penetrate the magnetosphere that shields Earth from lower energy charged particles. Once inside the magnetosphere, the particles are guided down the magnetic field lines and penetrate into the atmosphere near the north and south poles. NOAA categorizes Solar Radiation Storms using the NOAA Space Weather Scale on a scale from S1 - S5. The scale is based on measurements of energetic protons taken by the GOES satellite in geosynchronous orbit. The start of a Solar Radiation Storm is defined as the time when the flux of protons at energies ≥ 10 MeV equals or exceeds 10 proton flux units (1 pfu = 1 particle*cm-2*s-1*ster-1). The end of a Solar Radiation Storm is defined as the last time when the flux of ≥ 10 MeV protons is measured at or above 10 pfu. This definition allows multiple injections from flares and interplanetary shocks to be encompassed by a single Solar Radiation Storm. A Solar Radiation Storm can persist for time periods ranging from hours to days. Solar Radiation Storms cause several impacts near Earth. When energetic protons collide with satellites or humans in space, they can penetrate deep into the object that they collide with and cause damage to electronic circuits or biological DNA. During the more extreme Solar Radiation Storms, passengers and crew in high flying aircraft at high latitudes may be exposed to radiation risk. Also, when the energetic protons collide with the atmosphere, they ionize the atoms and molecules thus creating free electrons. These electrons create a layer near the bottom of the ionosphere that can absorb High Frequency (HF) radio waves making radio communication difficult or impossible. SWPC currently forecasts the probability of S1 (Minor Radiation Storm) occurrence as part of our 3-day forecast and forecast discussion products and issues a warning for an expected S1 or higher event; as well as a warning for when the 100 MeV proton level is expected to reach 1 pfu. Additionally, SWPC issues alerts for when each NOAA Space Weather Scale Radiation Storm level is reached (S1-S5) and/or when the 100 MeV protons reach 1 pfu. 
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