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Thread: This minimum is shaping up to be a deep one.

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    Default This minimum is shaping up to be a deep one.



    Jury is out on whether or not it will be long as well.



    Spotless Days | SILSO
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    Default Re: This minimum is shaping up to be a deep one.

    Here's a chart of the spotless days year to date.



    Not sure if I'll maintain this going forward. Feedback on interest would help me decide.
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    Default Re: This minimum is shaping up to be a deep one.

    Apparently it's not just me that thinks this is noteworthy.

    https://spaceweatherarchive.com/2018...than-expected/

    Excerpt:

    Newcomers to the field are often surprised to learn that a lot happens during solar minimum: The sun dims, albeit slightly. NASA recently launched a new sensor (TSIS-1) to the International Space Station to monitor this effect. With less extreme UV radiation coming from the sun, Earth’s upper atmosphere cools and shrinks. This allows space junk to accumulate in low Earth orbit.
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    Default Re: This minimum is shaping up to be a deep one.

    I have noticed the lazy Sun. Damned thing might go out at this rate very soon!

    Cripes! I just saw the Sun flicker!

    No, sorry. Just a cloud going by...

    I wonder if there might be a correlation between a deep minimum and a raging maximum to follow? Only time will tell.

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    Default Re: This minimum is shaping up to be a deep one.

    Alex,

    It's just the opposite. The various predictions are for cycles 25 & 26 to be weaker solar maxima or one weaker and one the same as cycle 24 to follow over the next two decades. I have not seen any predictions for stronger maxima over the past 10 or so years. I don't read widely or pursue articles on the subject but if I stumble on a reference, I'll read it because it also feeds into my solar eclipse observation and planning.

    https://www.space.com/21937-sun-sola...k-is-weak.html

    https://arxiv.org/abs/1711.04117

    https://phys.org/news/2017-02-dont-p...t-anytime.html

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    Default Re: This minimum is shaping up to be a deep one.

    Quote Originally Posted by ozeclipse View Post
    I have not seen any predictions for stronger maxima over the past 10 or so years. I don't read widely or pursue articles on the subject
    There's the double dynamo theory by Prof. Zharkova, which appears to be best theory right now. According to that, there will be a roughly 33 years long period with very little activity from about 2020 to 2053, and then a slow recovery.

 

 

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