Does a jet stream shift north or south in the winter or summer?

Question

project..
help ME!

Answer 1

Neither. it follows the line of a weather front.

Polar jetstreams follow roughly the line of convergence along the mean polar low pressure zone so theoretically in the northern hemisphere they move north in summer and south in winter.

Answer 2

It's not so much that it shifts north or south but that the land mass over which the Jet Stream extends changes with the seasons. During summer it is confined to the more northerly lattitudes but come summer it extends further south.

The main driver is temperature and during the winter months there's a much greater surface temperature contrast between the polar and tropical air masses. Because of this the Jet Stream covers a greater area than it does in summer when there is a much lesser contrast.

Typically in winter it lies between 40 and 80 degrees north of the equator but in summer is confined more to between 40 and 50 degrees north.

Answer 3

The Jet Stream or Rossby Wave is a dymanic response to heating of an air mass on a rotating planet and to air rising and falling over a topograhpical high (such as the Rockies or Andes)

Well that was what I was told in my GCSE Geography in 1987.

Normally the Atlantic Jet Stream tends to move Northward in summer as the atmosphere is heated more along the Tropic of Cancer shifting the equatorial circulation northwards (and vice versa in winter). This has the effect of bringing the Azores High Pressure cell closer to Britain and deflecting the Atlantic Depressions around the top of the country. This year (2007) the jet stream hasn't moved so far north, the Azores High is stuck over the Azores and Britain has been hit with the Atlantic depressions and all their rain. It has also caused the heatwave in southern Europe.

Answer 4

A jet stream can go anywhere depending on the preceding forces that act upon it. For example, the jet stream that normally goes north of europe has decided to plonk itself right over Britain this year, leaving it soggy and damp. Destruction of woodland and forest and over-zealous house building has led to the misery of thousands, if not millions.

Of course, if the population of Britain wasn't increasing at such a drastic rate we wouldn't be forcing people into paper thin houses built on flood plains... oh, sorry, I thought this question was in Politics. Byee!

Answer 5

It moves to the south to divide warm air from cold air. This is because warm air moves towards cold air, but the Coriolis force shifts these winds to the east.

Answer 6

surely...it is windy interior the summertime. the concept the wintry climate comes from one chilly front, and that the summer season is all extreme tension is rather fake. once you're noticing wind extra interior the wintry climate, that is in all likelihood because of the fact that is getting chillier. chilly wind would in all likelihood be extra noticable than heat wind.

Answer 7

Sorry this is not a classroom do you own work