Ferrel
High or low pressure lies along the subtropical jet stream, depending on the time of year. The pressure gradient follows the path of the jet stream.
A mature stream.
I wasn't at that particular lecture, but my first guesses are "wind" in general, "jet stream" being one particular current. More specifically, there are polar and subtropical jet streams, as well as polar night jets, barrier jets, valley exit jets, the African easterly jet, and I will be interested to learn if more are being discovered and whether all of them are permanent or if they will all become something else.
Things that would cause a stream to move faster would be how large the stream is, how much material is in the stream and how much of a slope the stream is at. Things blocking the stream would also cause it to move slower.
Atmospheric and oceanographic sciences generally differentiate between vertical convection and horizontal advection. These disciplines study the atmosphere and the oceans which are both much wider in the horizontal than they are thick in the vertical. Making the distinction between horizontal (i.e. isopycnal, along surfaces of constant density) and vertical (i.e. diapycnal, through density surfaces) therefore makes sense for meteorologists and oceanographers. In fluid mechanics on the other hand the terminology is often used interchangeably. Their study environment is frequently a tank in a laboratory and therefore is more of a cube compared to the thin oceanic layer on the Earth. In fluid mechanics, advection and convection is the same.
ferrel
Ferrel.
ferrel
A. The subtropical jet stream lies between the westerlies and polar easterlies; this statement is true. B. The polar jet stream typically flows to the east, while the subtropical jet stream flows towards the west.
The polar jet stream is generally stronger and faster-moving than the subtropical jet stream. The polar jet stream forms at higher latitudes and is located closer to the poles, while the subtropical jet stream is located at lower latitudes. The polar jet stream is associated with larger temperature contrasts and stronger pressure gradients, resulting in stronger winds compared to the subtropical jet stream.
The polar jet stream is generally stronger than the subtropical jet stream. The subtropical jet stream lies between the westerlies and trade winds.
The polar jet stream is generally stronger than the subtropical jet stream
The high pressure band of air blowing from west to east is known as the subtropical jet stream. It is located at high altitudes in the atmosphere and affects weather patterns in the mid-latitudes. The subtropical jet stream is stronger in the winter and weaker in the summer.
The subtropical jet lies just poleward of the ITCZ.
The polar jet stream is generally stronger than the subtropical jet stream
The jet stream is a narrow band of strong winds in the upper atmosphere that is driven by the temperature difference between air masses. Convection is the transfer of heat through the movement of fluid (in this case, air). The jet stream is influenced by the temperature contrasts created by convection, particularly between the polar and tropical air masses.
Wind doesn't control the jet stream; this is controlled by something much more complex. It has to do with the mass balance of the atmosphere, vertically propagating waves, and the earth's rotation.