Why has the Sun gone to sleep? : BBC Newsnight
-
- I live above an internet cafe
- Reactions: 0
- Posts: 197
- Joined: Wed Jul 24, 2013 2:53 am
- Location: Chang Mai
Why has the Sun gone to sleep? : BBC Newsnight
Okay so I'm British and therefore spend at least 50% of my day talking about the weather but it does seem bloody cold here for January.
A quote from some bloke who knows rather more about the weather than me :-
Excerpt from an upcoming book on Earth Changes by SOTT.net Editor Pierre Lescaudron:
"Solar activity induces a compression in the ionosphere, which is more prominent at the level of the equator. This equatorial compression of the positively charged ionosphere ‘pushes’ the positively charged polar jet stream towards the north. Conversely, weak solar activity ‘decompresses’ the ionosphere at the level of the equator and allows the jet stream to move south, towards the decompressed equator.
This explanation could also account for the latitude difference of the jet stream in winter and summer. In summer, the northern hemisphere faces the Sun, so the northern ionosphere is more compressed by solar winds and the jet stream is pushed northwards. In winter, when the northern hemisphere receives less solar wind, so the ionosphere above the northern hemisphere relaxes and enables the jet stream to move back southward.
Therefore, if solar activity is weak, the jet stream should be observed at abnormally low latitudes. This is what has happened in recent years, with the jet stream as low as 15° north in winter (above North Africa) when it should be around 50° north (above Scotland).
A low-latitude jet stream means that the Arctic air located to the north of the jet stream can reach lower latitudes, in particular the ‘temperate’ regions. This overall shift to the south exposes low-latitude regions (southern U.S., southern Europe) to very cold conditions. In this way, a lasting decrease in solar activity would induce an overall cooling of the ‘temperate’ latitudes that would be increasingly less separated from Arctic air by a more frequently and abnormally south-moving polar jet stream.
Low solar activity pushes the jet stream south, but it also makes it slow and meandering. The jet stream can even ‘stall’. This phenomenon is also called a ‘blockage’. The correlation between weak solar activity and jet stream blocking was demonstrated in 2008. A blockage prevents the moist and relatively warm air above the ocean from reaching Western Europe and heating that part of the continent. It also stops separating the relatively warm air of the temperate latitudes from the cold air of the Aarctic latitudes. The encounter of those masses of air exhibiting very different temperatures can lead to extreme weather phenomena like massive rainfall, snowfall and violent winds.
The meandering jet stream can also generate very unstable situations such as ‘cold drops’ surrounded by hot air and, conversely, ‘hot drops’ surrounded by cold air. In the winter of 2012-2013, Europe and North America experienced several ‘abnormal’ cold waves, while more recently North America was hit with a record-breaking ‘polar vortex’ and Australia with a record-breaking heatwave. These anomalies are usually correlated with a weak jet stream."
http://www.isihanoukville.com - Sihanoukville and The Islands Guide - http://www.koh-rong-samloem-island.com
-
- I have Cheap Mobile Internet
- Reactions: 0
- Posts: 368
- Joined: Mon Aug 19, 2013 8:10 pm
- Location: Out of reach - too far from a decent ale!
What nonsense! Complete and utter nonsense. More rubbish from the New World Order prophets. The same lunatics who 'presented' to us global warming, when, in the 70s, we were seemingly heading for another ice age.
Things change; there are periodic changes in weather patterns & political dynamics. If silly sods want to make their pathetic claims to fame, let them do so. Most people have got better things to do with their time.
Oh yeah, it's the age of Aquarius. Big Brother's military genius...
Things change; there are periodic changes in weather patterns & political dynamics. If silly sods want to make their pathetic claims to fame, let them do so. Most people have got better things to do with their time.
Oh yeah, it's the age of Aquarius. Big Brother's military genius...
Don't grow up - it's a trick!
-
- Similar Topics
- Replies
- Views
- Last post
-
- 47 Replies
- 4621 Views
-
Last post by Harold
Mon Sep 11, 2023 5:32 pm