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Is there any statistical tracking of sunspot strength, for example HMI I/B raw numbers matched up against a full solar cycle?

Find it peculiar that we suddenly have 4(maybe 5 soon) fast growing regions cropping up with rapidly intensifying sunspots, and they seem to tend towards more asymmetrical and extreme shapes.

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  • Philalethes
    Philalethes

    Typically not entirely, at least not during the initial turbulent SIR, but generally speaking a CH is carrying out the magnetic field at the source, so for CHs in positive fields the phi-angle will ge

  • Philalethes
    Philalethes

    Here's an updated version of this plot, with up-to-date flare data that I recently compiled; as you can see geomagnetic activity generally peaks after SSN maximum, so hopefully we'll see something sim

  • Vancanneyt Sander
    Vancanneyt Sander

    A bit more complete (sorry @Parabolic 😇)

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9 hours ago, Rudolph said:

Is there any statistical tracking of sunspot strength, for example HMI I/B raw numbers matched up against a full solar cycle?

Find it peculiar that we suddenly have 4(maybe 5 soon) fast growing regions cropping up with rapidly intensifying sunspots, and they seem to tend towards more asymmetrical and extreme shapes.

Not that I am aware of other than @Philalethes recent butterfly showing the higher likelihood of Anti Hale to appear during the last stage which incidentally I hadn’t heard before. I thought they were more or less consistently spread in a random manner.

  • 1 month later...

I'm curious about this, I've recently seen these sorts of things floating around in the M2.5 CME thread, and I have no idea what it is. I don't want to make any assuptions, but it looks to me (uninformed) like images of how far away the CME is to the earth. if this is actually what it is, I had no idea such a thing existed, and I've never seen it used in forecasting arrival times until just this week. What's up with that? Thank you!! https://community.spaceweatherlive.com/topic/4037-ar14199-m28-20250830-cme/page/6/#findComment-81556

20 minutes ago, linkedwinters said:

I'm curious about this, I've recently seen these sorts of things floating around in the M2.5 CME thread, and I have no idea what it is. I don't want to make any assuptions, but it looks to me (uninformed) like images of how far away the CME is to the earth. if this is actually what it is, I had no idea such a thing existed, and I've never seen it used in forecasting arrival times until just this week. What's up with that? Thank you!! https://community.spaceweatherlive.com/topic/4037-ar14199-m28-20250830-cme/page/6/#findComment-81556

those are STEREO HI 2 images, which can make CMEs visible
unfortunately, the cadence is low and theres a lot of disturbance in the image, as you can see
i have no idea why it wasnt being used until yesterday, thats why i pointed it out
the website Helio4cast provides a higher cadence of HI1 0.1-0.4 AU by enhancing raw images via machine learning
i wonder if this is also possible for HI 2

41 minutes ago, linkedwinters said:

I'm curious about this, I've recently seen these sorts of things floating around in the M2.5 CME thread, and I have no idea what it is. I don't want to make any assuptions, but it looks to me (uninformed) like images of how far away the CME is to the earth. if this is actually what it is, I had no idea such a thing existed, and I've never seen it used in forecasting arrival times until just this week. What's up with that? Thank you!! https://community.spaceweatherlive.com/topic/4037-ar14199-m28-20250830-cme/page/6/#findComment-81556

You can find out about EPAM in the help section: https://www.spaceweatherlive.com/en/help/how-do-we-know-if-a-cme-is-earth-directed-and-when-it-s-going-to-arrive.html

I used the Stereo HI2 images to show what CME looks like from the side. These pictures won't tell you the exact speed and direction. If they had the value of SOHO or GOES coronagraphs, we would have adopted them long ago.

  • 2 weeks later...

does solarsoft still work on windows xp or any other operating system?
i tried installing it on windows xp and the installation failed

Anyone know what's up with SDO imagery? Latest has stopped updating since the 13th and the FTP server is unavailable.

29 minutes ago, Rudolph said:

Anyone know what's up with SDO imagery? Latest has stopped updating since the 13th and the FTP server is unavailable.

May be there are problems on some NASA server. Although jsoc receives the data. HMI: https://jsoc1.stanford.edu/hmi_latest

Here are the latest AIA images, but the interface is very inconvenient: https://sdo.oma.be/data/aia_quicklook_image/2025/09/

Edited by Samrau

  • 2 weeks later...

@Parabolic I blame you for making me occasionally look at the latest dopplergram but not fully understanding its intended use. Spotted something in AR14224 that looked familiar, but can't find the structure in any other wavelengths except HMII. Is it just a peculiar looking light bridge?

Screenshot_20250923-195746-display-0.png.png

Screenshot_20250923-201030-display-0.png.png

And if it is and maturing sigmoids can't be spotted on them, what's the best use for dopplergrams?

Edit: To follow up, it's fair to say at this point that it was just a peculiar shape. So what is the best use for a dopplergram?

Edited by Rudolph
Followup

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