Solar eruption leading to solar storm that knocks out power grids
Chris Mims, writing in a Weekend WSJ article ('A Plan To Shield Earth From Solar Storms', p. C2) begins with this future flight of fancy:
"It’s the year 2040, and the Big One—a civilization-smashing solar storm of a scale not seen since the 19th century—is on a collision course with Earth. Far out in space, where geostationary satellites orbit, a half-dozen school-bus-size satellites crack open and start dumping barium, lithium or sodium. Within minutes, sunlight transforms this material into an ionized gas shield that slows the oncoming massive blob of plasma. Down on Earth, a would -be global catastrophe potentially knocking out all electric grids- is reduced to a nighttime display of aurora."
This provokes the question of what exactly Mims is writing about. Well, he (and others) envisage a "Storm Wall" to prevent such a mammoth CME (coronal mass ejection hurling us back into an electronic Stone Age). Translation: No working cell phones, no TV, no computers, no radios and no GPS.
The fancied project - not yet a reality- goes by the name 'StormWall'' and was "conceived by a trio of scientists: Daniel Welling, a space physics specialist at the University of Michigan, Brian Walsh, an associate professor of engineering at Boston University, and Allison Jaynes, a space physics professor at the University of Iowa.
Walsh and Welling are the co-authors and co-designers of the proposal, which - let's be clear - is still years in the future (assuming the money is available to complete it). According to Welling, quoted in the Mims' piece:
"Even in the best case scenario, just the research would require at least five more years."
Oh yeah, and "even if its costs $100 billion, that price tag is only one tenth of the amount tech companies are projected to spend on building AI infrastructure next year alone."
But as I see it, the more serious problem - which may prevent even partial funding - is that Trump's 'Big Beautiful Bill' passed last year - has already blown past the debt doors by $5 trillion. So, the chance of passing a $100 b space project are more like slim and none. Which is a pity, given from what Mims spells out in his WSJ article it could work.
To reduce it to its ultimate simplicity one can think of an "airbag for the magnetosphere." According to co-designer Dan Welling:
"You can think of it as an air bag. It would be deployed only when all other measures have been deemed insufficient. And like an air bag for your car, deployment is a one-time thing. After all, if you use it in your car the entire steering column has to be replaced and the insurance company will declare your car totaled."
Of course, this 'one off' aspect is another reason I doubt there will be any budget allocations for it. I mean a one time project for $100 billion? Certainly not with any Reepo congress in place, and I suspect a Dem congress would give pause as well, given they will likely be in 'clean up; mode after the Goopers leave so much debt in their wake.
But again, this would be a pity given "the idea of StormWall is to help boost the magnetospheric defenses when bad stuff heads toward us."
Reviewing the function and nature of the magnetosphere we can refer to the artist illustration below:
Here, a CME from the Sun is headed toward Earth, with billions of charged particles en route. But most will get deflected by the magnetosphere (greenish field lines). A portion of the incoming particles are channeled to the Earth's poles and show up as the aurora when the solar wind is especially active.
StormWall would enhance the magnetospheric field, but the major expense would be in assembling at least 830,000 pounds (415 tons) of ionizable material (lithium, barium or sodium) to be launched to an altitude of 22,000 miles above the Earth's surface. Thus one would have a geosynchronous orbit. In this case, the altitude is critical given it's at the height the injected ionized material would be able to follow the 'natural highways' in space, according to the project designers. Obviously, to get this job done would require the most powerful rockets available.
Currently many launches would be needed to put that much material into the desired orbit. In truth, a mega-rocket like Space X's Starship would likely be needed to effect a single transfer of 415 tons into a 22,000 mile orbit. But I doubt Musk would endorse it.
Why all the expense and effort? To avoid the next massive disruptive event especially given the extent humans now depend on things like smart phones, computer and AI. The last truly disruptive even was in March, 1989 when the Quebec power grid was knocked out for 9 hours. Large direct currents arising from a red aurora at the time, triggered by a solar storm, were believed to be the immediate cause.
Then in 2012, a solar 'superstorm' more powerful than any in the past 150 years, narrowly missed Earth. i.e.
Monster Plasma "Blob" Headed for Earth: Is This the End?
But let's be clear that predicting a space weather event - say a massive CME erupting from the solar meridian - is not the same as correctly forecasting its effects on one particular part of a hodge-podge terrestrial power grid. In other words, you can't hold space physicists responsible for failing to forecast that field line currents generated - say like in the 1989 event- will have a similar impact now.
In the case of CMEs, a quantitative forecast strategy would revolve around obtaining the rate of increase of the poloidal magnetic flux (Φp) associated with a specific flux rope (e.g. that shows kink or other instability) e.g.
dΦp(t )/dt
Then, for a predictive basis one would require the related function be adjusted for each potential CME (dependent on its current heliographic location) that best fits the total observed data. This function would normally be given in terms of the electromotive force associated with the active region so that:
E(t ) ≡ −(1/c)dΦp(t )/dt
Where the preceding would constitute a forecast from the theory for each CME trajectory. According to Ian Cohen, head of solar and space physics at the Johns Hopkins APL,
"The challenge is that experts can't predict space weather the way they can predict weather on Earth. We don't have as many sensors in space, and the processes that trigger solar storms and make them devastatingly potent, are more complicated."
One only hope the challenges can be met, but time is not on our side, nor is the degree of human insight, critical thinking and support for science - having taken a massive hit since last January. If Mr. Mims's' fantasy rescue from electronic doom is to be averted using StormWall, we'll need a succession of fortuitous breaks before 2040.
See Also:
And:
Coronal Mass Ejections In The Context Of Collisionless Shocks
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