SPACE - S0 - 20210622 - A Titan Has Fallen, Solar Chemistry, End-Permian Extinction
Good Morning, 0bservers!
Solar winds stayed steady through most of yesterday morning, in the 350-375 KPS range, but became more variable in the afternoon and evening moving into the 320-390 KPS range. It's since calmed down as of 0600 UTC to the 370-340 KPS range and seems to be dropping further. Particle Density started tapering off around 0600 UTC yesterday but took a sharper rise after midnight UTC with a dropoff around 0700 UTC. Not sure if that's the portent of the coronal hole stream, but we'll have to wait and see if the winds pick up in the next six hours. Temperatures jumped around 0500 from 4400°K to 5200°K, but then started dropping back about two hours later, with the current readings near 4000°K. The Phi Angle was pretty variable (but not wildly so) for most of yesterday, but seems to have steadied itself around 0300 UTC. And we're seeing a BIG gap in the Bt/Bz polarities since 0200 UTC. KP-Index readings were calm all of yesterday (KP-1) but we did see a KP-3 pop up at 0300 UTC, lowering to KP-2 by 0600 UTC. Magnetometer sine wave is nominal, as is the Proton Flux, and the Electron Flux finally dipped below the alert threshold around 2300 UTC. Background radiation levels on the X-Ray Flux increased to above the Class B line throughout the period, and we did have one spike to mid-Class B around 0200-0300 UTC. It must've been a pretty lame one (or on the far side of the Sun), because it didn't show up on the video loops. There is a new equatorial coronal hole developing now and crossing central heliographic longitude, and I'm seeing some new potential sunspot glows along the Eastern lim, one in the North and a weaker one in the South. Neither are showing up on the Magnetogram image from SOHO, but the departing sunspot in the North is gaining in complexity at the moment, so we might see some action from that as it moves toward the Western lim.
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