Sentences with phrase «position of the jet stream»

Because August temperatures in those two regions reflect the summer position of the North Atlantic jet stream, Trouet and her colleagues used those tree - ring readings to determine the historical position of the jet stream from 1725 to 1978.

Also inhibiting summer melt this year is the unusually southerly position of the jet stream, caused by a climate pattern called the North Atlantic Oscillation.

Indeed on the basis of my previous article about weather being the key it may be possible to get even earlier warning of changes in global temperature trend from observation of the preferred positions of the jet streams and the main high pressure systems.

Wikipedia has «Since 2007, and particularly in 2012 and early 2013, the jet stream has been at an abnormally low latitude across the UK, lying closer to the English Channel, around 50 ° N rather than its more usual north of Scotland latitude of around 60 ° N. However, between 1979 and 2001, it has been found that the average position of the jet stream has been moving northward at a rate of 2.01 kilometres (1.25 mi) per year across the Northern Hemisphere.

However, the 2011/2012 position of the jet stream meant these regions were south of it for most of the winter, which helped produce the fourth warmest US winter on record.

For the position of the jet stream from 1979 to 2015, the researchers relied on data from meteorological observations.

The NAO indicates the position of the jet stream — which is a giant current of air that broadly flows eastwards over mid-latitude regions around the globe — through a diagram which shows «negative» and «positive» spikes, similar to how a heart monitor looks.

Having a 290 - year record of the position of the jet stream let Trouet and her colleagues determine that swings between northern and southern positions of the jet became more frequent in the second half of the 20th century, she said.

Widening of the tropics would also probably be associated with poleward movement of major extratropical climate zones due to changes in the position of jet streams, storm tracks, mean position of high and low pressure systems, and associated precipitation regimes.

It is already known to exert a strong influence on temperatures and rainfall in the United States, and affect the position of the jet stream.

Dr Screen said: «The results of the computer model suggest that melting Arctic sea ice causes a change in the position of the jet stream and this could help to explain the recent wet summers we have seen.

The position of the jet stream has a substantial impact on weather in Northern Europe.

The strength and position of the jet stream are good indicators of weather events.

The study, published today in Nature Geoscience, found the position of the jet stream aligns with a boundary between two different regions in the core.

This may have deflected the position of the jet stream, bringing colder conditions to North America than the rest of the Northern Hemisphere.

Clearly the position of the jet stream is a major reason for the arrival of storm after storm to New England.

«Mid-latitude economies such as those in Europe and the United States could be threatened, for example, by a suggested link between sea - ice retreat and the strength and position of the jet stream, bringing extreme winter and spring weather,» the paper states.

This is what we have seen, Additionally, the position of the jet stream traveling up the Atlantic coastline provides a path for storm systems to travel.

«Changes in the position of the jet stream are very noisy, and can be hard to detect even in climate simulations,» Amy Butler, an atmospheric scientist at NOAA, told BuzzFeed News.

For instance, what will all of that extra carbon dioxide means for how air circulates, for the position of the jet stream, and for how clouds are distributed in the atmosphere?

The latitude of the «storm track» along the West Coast — largely defined by the position of the jet stream — varies from day - to - day, month - to - month, and even year - to - year.

I attribute it to natural variability caused by the position of the jet stream, local and national currents, warmth of ocean water, direction of winds etc..

This heats up the ocean and surrounding area, and this effect has the potential to change global weather patterns, vary the flow of winds and alter the position of the jet stream, Wagner explained.

I can literally trace on a map the position of the jet stream with a 700 or 500 mb charts, especially by being fully aware that over North Pacific and Atlantic cyclones the jet stream can be to the south of them, all while following the interface between coldest polar and temperate air over the continents.

For example, during the 2011/2012 winter, there was a shift in the position of the jet stream.