It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Scientists are working out potential linkages between rapid Arctic warming caused by climate change and a more wavy jet stream causing weird winter weather
One thing we do know is that the polar jet stream—a fast river of wind up where jets fly that circumnavigates the northern hemisphere—has been doing some odd things in recent years.
Rather than circling in a relatively straight path, the jet stream has meandered more in north-south waves. In the west, it’s been bulging northward, arguably since December 2013—a pattern dubbed the “Ridiculously Resilient Ridge” by meteorologists. In the east, we’ve seen its southern-dipping counterpart, which I call the “Terribly Tenacious Trough.”
[Jet streams exist because of differences in air temperature. In the case of the polar jet stream, which is responsible for most of the weather we experience around the middle-latitudes of the northern hemisphere, it’s the cold Arctic butting against warmer areas to the south that drives it. (A more in-depth explanation can be found here.) Anything that affects that temperature difference will affect the jet stream.
This is where climate change comes in: the Arctic is warming much faster than elsewhere. That Arctic/mid-latitude temperature difference, consequently, is getting smaller. And the smaller differential in temperatures is causing the west-to-east winds in the jet to weaken.
Strong jets tend to blow straight west to east; weaker jets tend to wander more in a drunken north/south path, increasing the likelihood of wavy patterns like the one we’ve seen almost non-stop since last winter.
When the jet stream’s waves grow larger, they tend to move eastward more slowly, which means the weather they generate also moves more slowly, creating more persistent weather patterns.
originally posted by: kosmicjack
What we don't know yet is whether it's a transient phenomenon or a long term thing and whether this is the direct cause of the jet stream dip or simply correlated with it.
SO, can someone really explain, definitevly, the hows or whys of our precious Earth and its Weather?.............Anyone?
originally posted by: onequestion
a reply to: kosmicjack
Well if we use history as our guide the only conclusion that we can really draw is that the earths climate is very unstable.
The oceans and their currents are also affecting climate and weather. If you think of the surface of the Earth as being the waters of the Earth and the atmosphere combined - e.g. everything that isn't 'ground' - then the oceans contain probably 98% or so of the thermal energy of the surface of the Earth, because water is so much denser than air. It takes a whole lot more energy to raise or lower the temperature of a cubic kilometer of water by 1 degree than it does to change the temperature of the same volume of air. And those currents have changed and are changing, probably as a result of either the volcanic eruptions and their heat or because of the massive influx of fresh water from the melting ice, and probably it's both.
Quote: "A changing Gulf Stream off the East Coast has destabilized frozen methane deposits trapped under nearly 4,000 square miles of seafloor, scientists reported Wednesday. " usnews.nbcnews.com...
So that oceanic heat-moving current is obviously changing, and ANY change to that current is bad news. The fact that it's destabilizing those methane hydrate deposits off the East Coast means that heat is backing up, not being transported toward Europe as it once was. So we're getting milder winters in the Northeast, even as parts of Europe are freezing their gonads off. And as that heat continues to melt away those methane deposits, that will make the atmosphere absorb more energy per square meter, which will melt more ice, which will cause more volcanic eruptions, and destabilize the oceanic currents even more and cause more methane releases, and on and on it goes, the process constantly reinforcing and strengthening itself. And all along, as the oceans heat, the bacteria that produce hydrogen sulfide will be expanding their territory, increasing their emissions.
This all looks to be an unstoppable behemoth of doom now, which is why they're preparing mass fatality legislation, and FEMA camps, and stocking up on bullets, and having anti-zombie training, and digging underground bunkers, and spending like there's no tomorrow - because there isn't, not for life as we know it, not on the surface of the Earth.
Parts of Siberia, known to be the coldest places on earth, are experiencing freakish warm temperatures as well.