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Wednesday, December 22, 2010

Dec. 22 - How a freak diversion of the jet stream is paralysing the globe with freezing conditions‏

Dear Friends,

Yeah - a freak diversion...Click the link to view the images.

http://www.dailymail.co.uk/sciencetech/article-1340436/Why-cold-warm-Greenland-Diverted-jet-stream-letting-icy-blast-Arctic.html

Be Well.

David

How a freak diversion of the jet stream is paralysing the globe with freezing conditions

By Niall Firth
Last updated at 12:53 PM on 22nd December 2010


  • It's snowing in Australia and California yet 'warm' in Greenland

The freezing conditions that have blasted Britain are being blamed on a series of weather patterns that are bringing Arctic temperatures to much of western Europe, California and even Australia.

One of the main factors is a change in the position of the jet stream - the fast-moving current of air that moves from west to east, high in the atmosphere.

Changes in the jet stream's path can cause massive changes in weather conditions across the globe and may be why Australians are now shivering their way through summer and the current freezing conditions in California.

In a normal British winter - when conditions are mild and soggy - the jet stream lies over northern Europe, at an altitude of between 35,000 to 50,000 feet.

Daily mean temperature anomalies around the world between 1st December and 20th December

Daily mean temperature anomalies around the world between 1st December and 20th December compared with the 30 year long term average between 1961 and 1990

During these grey winters, Britain's prevailing winds come from the west and south west, and bring with them warm and moist air from the sub-tropical Atlantic.

This year a high-pressure weather system over the Atlantic is blocking the jet stream’s normal path and forcing it to the north and south of Europe.

The areas of high pressure act like stones in a stream - blocking the normal flow of milder air from the west and instead forcing colder air from the north down across the UK.

In California more than 12 inches of rain has fallen in parts of the Santa Monica Mountains in the south and 13 feet of snow has accumulated at Mammoth Mountain ski resort.

And Australians expecting to bask in early summer sun this Christmas are instead shivering as icy gusts sweeping up from the Southern Ocean have blanketed parts of east coast states New South Wales and Victoria with up to four inches of snow.

When the jet-stream is blocked by high pressure it dips southwards and lets freezing air flood in from the Arctic regions.

A swan tries to break free of the ice on the frozen lake at the Fairburn Ings Bird Sanctuary near Castleford, as the deep freeze in the UK continues

A swan tries to break free of the ice on the frozen lake at the Fairburn Ings Bird Sanctuary near Castleford, as the deep freeze in the UK continues

Australia.jpg
California.jpg

Snow and ice covering buildings at Mount Hotham as snow fell in Australia, left, while parts of California, right have been swamped with rain and inches of snow

Other weather patterns are also causing havoc across the may also be affecting the weather, such as the current in the tropical Pacific Ocean, called La Nina, which is disturbing the jetstream over the north Pacific and North America.

A combination of our usual wet Atlantic weather systems striking these freezing cold fronts results in huge amounts of snowfall – and brings Britain grinding to a halt.

A Met Office spokesman: ‘The problem is we are not getting the warmer Atlantic air that normally keeps our winters mild.’

‘We can see that it is unseasonably warm over Canada and Greenland, this is where warm air has been diverted.’

He said that any change in the pressure over the Atlantic would need to last for several days before we would notice any change in the weather in Europe.

Freezing-cold winters and milder winters tend to cluster in groups, as the jet stream changes its path.

Experts are still unsure why this is but suspect it may be related to the EL Nino weather system as well as changes in sea temperatures and solar activity.

A system of high pressure

A system of high pressure has forced the jet stream further south, allowing biting cold winds in from the north



Read more: http://www.dailymail.co.uk/sciencetech/article-1340436/Why-cold-warm-Greenland-Diverted-jet-stream-letting-icy-blast-Arctic.html#ixzz18sS9kqA3

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How to Digitally Record/Video a UFO sighting:


Como registar digitalmente ou gravar um vídeo de um avistamento de um UFO:




Stabilize the camera on a tripod. If there is no tripod, then set it on top of a stable, flat surface. If that is not possible lean against a wall to stabilize your body and prevent the camera from filming in a shaky, unsteady manner.

Estabilize a camera com um tripé. Se não tiver um tripé, então coloque-a em cima de uma superfície estável. Se não for possível, então encoste-se a uma parede para estabilizar o corpo e evitar que a camera registe de maneira tremida e instável.

Provide visual reference points for comparison. This includes the horizon, treetops, lampposts, houses, and geographical landmarks (i.e., Horsetooth Reservoir, Mt. Adams, etc.) Provide this in the video whenever is appropriate and doesn’t detract from what your focus is, the UFO.

Forneça pontos visuais de referência para comparação. Isso inclui o horizonte, cimo das árvores, postes de iluminação, pontos de referência geográficos (como o Reservatório de Horsetooth, Mone Adams, etc) Forneça esses pontos no vídeo sempre que for apropriado e não se distraia do que é o seu foco, o UFO/a Nave.

Narrate your videotape. Provide details of the date, time, location, and direction (N,S,E,W) you are looking in. Provide your observations on the weather, including approximate temperature, windspeed, any visible cloud cover or noticeable weather anomalies or events. Narrate on the shape, size, color, movements, approximate altitude of the UFO, etc and what it appears to be doing. Also include any unusual physical, psychological or emotional sensations you might have. Narrate any visual reference points on camera so they correlate with what the viewer will see, and thereby will be better able to understand.

Faça a narração do vídeo. Forneça pormenores sobre a data, hora, local e direcção (Norte, Sul, Este, Oeste) que está a observar. Faça observações sobre as condições atmosféricas, incluindo a temperatura aproximada, velocidade do vento, quantidade de nuvens, anomalias ou acontecimentos meteorológicos evidentes. Descreva a forma, o tamanho, a cor, os movimentos, a altitude aproximada onde se encontra o UFO/nave, etc e o que aparenta estar a fazer. Inclua também quaisquer aspectos pouco habituais de sensações físicas, psicológicas ou emocionais que possa ter. Faça a narração de todos os pontos de referência visual que o espectador irá ver e que, deste modo, será capaz de compreender melhor.

Be persistent and consistent. Return to the scene to videotape and record at this same location. If you have been successful once, the UFO sightings may be occurring in this region regularly, perhaps for specific reasons unknown, and you may be successful again. You may also wish to return to the same location at a different time of day (daylight hours) for better orientation and reference. Film just a minute or two under “normal” circumstances for comparison. Write down what you remember immediately after. As soon as you are done recording the experience/event, immediately write down your impressions, memories, thoughts, emotions, etc. so it is on the record in writing. If there were other witnesses, have them independently record their own impressions, thoughts, etc. Include in this exercise any drawings, sketches, or diagrams. Make sure you date and sign your documentation.

Seja persistente e não contraditório. Volte ao local da cena e registe o mesmo local. Se foi bem sucedido uma vez, pode ser que nessa região ocorram avistamentos de UFOs/naves com regularidade, talvez por razões específicas desconhecidas, e talvez possa ser novamente bem sucedido. Pode também desejar voltar ao mesmo lugar a horas diferentes do dia (durante as horas de luz)para ter uma orientação e referência melhor. Filme apenas um ,inuto ou dois em circunstâncias “normais” para ter um termo de comparação. Escreva tudo o que viu imediatamente após o acontecimento. Logo após ter feito o registo da experiência/acontecimento, escreva imediatamente as impressões, memórias, pensamentos, emoções, etc para que fiquem registadas por escrito. Se houver outras testemunhas, peça-lhes para registar independentemente as suas próprias impressões, pensamentos, etc. Inclua quaisquer desenhos, esbolos, diagramas. Certifique-se que data e assina o seu documento/testemunho.

Always be prepared. Have a digital camera or better yet a video camera with you, charged and ready to go, at all times. Make sure you know how to use your camera (and your cell phone video/photo camera) quickly and properly. These events can occur suddenly, unexpectedly, and often quite randomly, so you will need to be prepared.

Esteja sempre preparado, Tenha sempre uma camera digital, melhor ainda, uma camera vídeo consigo, carregada e pronta a usar sempre que necessário. Certifique-se que sabe como lidar com a sua camera (ou com o seu celular/camera fotográfica) rápida e adequadamente. Esses acontecimentos podem acontecer súbita e inesperadamente e, por vezes, acidentalmente, por isso, necessita estar preparado.

Look up. Be prepared. Report. Share.

Olhe para cima, Esteja preparado, Relate, Partilhe.

MUFON.COM

ESOTERIC



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