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Europe eyes improved 'space weather' resilience

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This artist's concept is of a new weather satellite - but not the type of spacecraft that warns us of coming winds and rain.

It's a mission that would monitor the Sun for the type of energetic outbursts that can interfere with everyday activities on Earth.

These powerful eruptions of particles and magnetic fields can degrade communications and even knock over power grids.

The Lagrange satellite would see this "space weather" as it develops, alerting us to the impending disruption.

The pictured concept has been produced by the UK arm of European aerospace company Airbus, which has just finished its initial assessment of how to construct the mission.

Airbus is one of four groups that were asked to work through ideas by the European Space Agency (Esa).

Member state delegations to Esa's big ministerial meeting in late November will now be asked to fund the next phase of the project.

The different Lagrangian Points

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  • These are the sweet spots in the Sun-Earth-Moon system
  • They are places where gravitational forces balance out
  • Satellites at these locations use less fuel to maintain station
  • L5 is at a 60-degree offset and follows Earth in its orbit
  • A complementary US mission would very likely go to L1

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The name Lagrange reflects the position the satellite would take up in space. The plan is to go to a gravitational "sweet spot" just behind the Earth in its orbit around the Sun known as "Lagrangian Point 5".

Spacecraft that are sited there do not have to use so much fuel to maintain station - but there is an even bigger operational rationale to use this location: it is the perfect spot to see that part of the Sun which is about to rotate into view of the Earth.

In other words, the Lagrange satellite would get a preview of emerging storm systems. And being off to one side would also allow it to estimate how quickly any big outburst might arrive at Earth.

Space weather is an issue of growing concern. There's a recognition that society's heavy reliance on technology has probably made it more vulnerable to the type of interference solar storms can initiate.

If a major outburst knocked satellite navigation systems offline, for example - a not-inconceivable scenario - the economic losses would run into the billions.

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On Thursday, the European Science Foundation’s European Space Science Committee issued a series of recommendations intended to lead to greater resilience.

The panel wants to see: more research on the topic; improvements in the models used for forecasting; a greater awareness of the risks; better coordination among everyone's efforts across Europe; and, obviously, a much-enhanced system of observations.

This is where missions like Lagrange come in. And it's hoped the European satellite would have an American partner in space. This would take up a position directly between the Earth and the Sun, at Lagrangian Point 1.

Last month, the UK government, which has supported the Lagrange feasibility studies through its Esa membership, put a further £20m towards space weather research.

This money is going principally to the Met Office, which is Britain's centre of excellence on the subject.

The Exeter-based agency works closely with US colleagues in issuing forecasts and warnings to users. These users include satellite operators. The alerts will tell them if they need to turn their spacecraft to shield sensitive electronics from the full force of a storm.

https://www.bbc.co.uk/news/science-environment-50007460

Edited by CaaC (John)
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Santa Ana winds (I don't really know what those are tbh, but the local news weather people keep talking about it) are making wildfire risks here in San Diego pretty high. There've been a few fires as of yesterday around Southern California recently, but they're mostly around LA it seems. There was one last night that tore through a trailer park and burned about 500 acres - pretty shit for those people.

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It's bloody pissing down outside and they reckon the Scotland v San Marino match might be called off because it's pissing down at Hampden and the pitch is becoming waterlogged,  just our luck as we are 3-0 up.

 

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Edited by CaaC (John)
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Mysterious ‘gravity waves’ seen rippling out over our atmosphere

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The waves spread over Australia (Weather Zone)

Spectacular rippling waves spread out in the atmosphere above Australia last week - showing off a little-known phenomenon: gravity waves.

‘Gravity waves’ are very different from gravitational waves, the ripples from distant collisions in space captured by detectors on Earth - and refer to waves in our atmosphere.

They’re often caused by collisions between air masses of different temperatures, creating ‘ripples’ which can be seen by satellites.

Weather expert Andrew Miskelly said, ‘More atmospheric gravity waves. Triggered, in this case, by an outflow from isolated thunderstorms over eastern NSW this afternoon.’

Adam Morgan of the Australian Bureau of Meteorology told ABC, ‘There was a big thunderstorm over the north-west of WA and the disturbance, in this case, was the cold air falling out of the thunderstorm and into the warmer air near the surface.

‘The difference in density there causes the disturbance and then the gravity wave can travel out as the cold air spreads out.

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‘The disturbance will exist until everything rebalances itself, that's why they can travel a long way.’

The waves are known as ‘gravity waves’ because they are rebalanced by gravity, Science Alert reports.

https://www.msn.com/en-gb/news/techandscience/mysterious-gravity-waves-seen-rippling-out-over-our-atmosphere/ar-AAJuNGW

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Bloody pissing down here and cold but I love the cold, the wife is moaning she is freezing but I said "For god's sake women you have the central heating on full blast, what more do you want...snuggle into me if you want and I will warm you up..." typical reply "No thanks"...sigh :(

 

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Bloody gale-force winds yesterday and last night and our son woke us up about 05.00 ish after coming home from his night taxi stint and said "that's a tree down in the back lawn pops", lucky enough no one was hurt or any cars damaged, just waiting on the council now to come and remove it, shitty picture I took from our back flat room window.

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Edited by CaaC (John)
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9 hours ago, CaaC (John) said:

Bloody gale-force winds yesterday and last night and our son woke us up about 05.00 ish after coming home from his night taxi stint and said "that's a tree down in the back lawn pops", lucky enough no one was hurt or any cars damaged, just waiting on the council now to come and remove it, shitty picture I took from our back flat room window

That's the fallen tree chopped up and removed by the council guys, somebody is going to have a good bonfire night tonight if they hand it over to a community firework and bonfire night display. :D

 

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Lightning strike leaves a gaping hole in a parking lot

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When severe thunderstorms roll through your neck of the woods one of the biggest concerns is always the risk of a tornado. A swirling vortex of high-speed wind and debris can cause incredible damage, but as residents of Fort Worth, Texas, were recently reminded, lightning can wreak havoc, too.

A ridiculously powerful bolt of lightning zapped the parking lot of a Chevron gas station early on Wednesday morning, blowing a 15-foot hole into the thick concrete and sending debris flying. As police quickly found out, the blast, which was caught on a nearby security camera, could have been much, much worse.

The lightning struck the ground in one of the worst possible spots. It blew a hole right through the six-inch-thick concrete that covers a massive diesel tank. Pieces of concrete flew as far as 75 feet according to local news reports, but it was the exposed tank that caused the most concern.

Officials were quick to respond to the scene and determined that despite the damage, no active leaks had formed. That’s a seriously lucky break, but it’s even more fortunate that the lightning struck the ground above the tank holding diesel fuel instead of the nearby tanks holding gasoline.

“Primarily, their diesel tank was affected, which was actually a good thing. Diesel’s less explosive when it comes to that kind of thing. It’s flammable, but the vapers are not quite as explosive as gasoline,” Mike Drivdahl of the Fort Worth Fire Department told NBCDFW. “I think we’re very lucky that nobody was in the parking lot at the time, because there could have been some injuries for sure.”

Thankfully there were no injuries, and the tank itself held up against the intensity of the lightning strike. The gaping hole in the gas station’s parking lot will obviously need to be tended to, but that’s a relatively minor inconvenience in the grand scheme of things.

https://www.msn.com/en-gb/news/offbeat/lightning-strike-leaves-gaping-hole-in-parking-lot/ar-AAJFATG

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