Questions tagged [jet-stream]
The jet-stream tag has no usage guidance.
13
questions
25
votes
2answers
2k views
What is the cause of the jet streams?
Jet streams are fast-flowing currents of air in our earth's atmosphere. An enormous amount of energy is necessary to keep a jet stream going. Where does this come from and why?
24
votes
0answers
430 views
Is it possible for a sting jet to form over a continental landmass?
Sting jets are thought to be responsible for some of the most damaging winds associated with extratropical cyclones in the mid-latitudes. So far they have only been confirmed in the European region, ...
11
votes
1answer
972 views
Why does the meandering pattern of the jet stream itself propagate?
It is well known that the jet stream follows an overall meandering pattern, but what is less well known is that this meandering pattern itself moves as a wave with a velocity much slower than the ...
10
votes
4answers
883 views
First to Sail the Jet Stream Around the World
My questions are related to a scenario discussed on Earth Science: A huge (heavier-than-air) kite sailing in and out of the jet streams.
The kite:
The scenario:
The assumptions:
Such an airship ...
6
votes
4answers
1k views
Easterly Jet Stream
If most of jet streams are westerly, that is to say, they blow from west to east, why does the tropical/equatorial jet stream blow from east to west?
5
votes
2answers
790 views
Centrifugal Force in the Navier Stokes Equations
The Navier-Stokes equations are a set of nonlinear differential equations that diagnose wind speed and direction. They are (approximately) expressed as $$\frac{d\vec{u}}{dt}=-\frac{1}{\rho}\nabla P+f\...
4
votes
1answer
60 views
Are there any flights that fly east both from origin to destination and from destination to origin?
Flying east is faster so I expect that if the destination are on opposite points or closer, that the flights between them always be to the east.
For example Los Angeles to Delhi. I see the fly is ...
4
votes
1answer
379 views
Why is the pressure on the poles higher in Summer and lower in Winter?
Just to give context, this was not my original question but one that I ended up stuck with while trying to find a cause for the following observation (which is almost universally true for temperate ...
3
votes
0answers
254 views
How does the interaction between Subtropical Westerly Jet Stream and Himalayas causes subsidence of air?
While reading the topic "Monsoon" in Aguado's Understanding Weather and Climate, I read this line
During winters... Air flows down the southern slope of the Himalayan
Mountains due to more rapid ...
2
votes
0answers
45 views
How does jetstreams lead to formation of heat waves in Europe?
Jetstreams move at an altitude of roughly 6-9km above the sea level. Since, it is moving at such a great altitude how could it have possible impacts on the land? And how will jetstreams that flow at ...
1
vote
2answers
54 views
Why is the jet stream stronger in winter?
I notice on a website talking about the jet stream https://www.weather.gov/jetstream/jet
It says:
The winds blow from west to east in jet streams but the flow often shifts to the north and south. ...
1
vote
0answers
616 views
Jet stream core
Why on a Polar Front Jet Stream does the core form on the tropical (warm air) side and not on the polar (cold air) side?
Thank you in advance.
1
vote
0answers
107 views
Sailing Around the World on a Jet Stream
An ultra light plane can stay in flight up to 2400 km (the World Record) with out an engine using thermal lift. Can a huge kite like airship (not a blimp) be built to indefinitely sail in and out of ...
