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Because they are forced only by the pressure gradient force and the coriolis effect. If friction were involved, they would by angled accordingly.
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Why does the surface wind show more complicated flow patterns than the upper-level winds?
Surface winds have to flow around such things as buildings and mountains. Upper-level winds have no 'obstructions' to alter their path.
Sometimes upper level winds cause a front to break up ending days of gray skies.?
occluded
Why do upper-level winds in the middle-latitudes blow from the west?
High altitudes winds at mid-latitudes blow from the west because they are influenced by the earth rotation. But it depends on the scale and time you are talking about.
Why don't hurricanes form in the Gulf of Mexico in January?
There are two reasons. First, hurricanes need warm ocean water to form. The water is generally not warm enough in January to support the formation of hurricanes. Second, upper level winds are strongest in the winter. Strong upper level winds mean strong wind shear, which prevents hurricanes form organizing.
Why do tropical cyclones spawn tornadoes?
Within a tropical cyclone the winds at lower levels are slower than those at upper levels, especially if the storm is moving onto land. At these lower speeds, the low-level winds blow more toward the center of the cyclone, while upper-level winds move in a more circular fashion. This creates wind shear, which can lead to rotation in some of the storm cells within the cyclone. This rotation can lead to the formation of tornadoes.
Why does the surface wind show more complicated flow patterns than the upper-level winds?
Surface winds have to flow around such things as buildings and mountains. Upper-level winds have no 'obstructions' to alter their path.
Upper level winds cause what kind of fronts?
stationary fronts
Sometimes upper level winds cause a front to break up?
stationary
What has the author E Gherzi written?
E. Gherzi has written: 'Winds and the upper air currents along the China coast and in the Yangtse valley' -- subject(s): Meteorology, Winds
Sometimes upper level winds cause a frint to break up ending days of gray skies?
Stationary
Sometimes upper level winds cause a front to break up ending days of gray skies.?
occluded
sometimes upper level winds cause a blank front to break up ending days of gray skies?
occluded
Sometimes upper level winds cause what type of front to break up ending days of gray skies?
stationary
What is an instrument carried aloft by a weather balloon to measure upper level pressure temperature humidity and winds?
Radiosonde is the general term.
Why do upper-level winds in the middle-latitudes blow from the west?
High altitudes winds at mid-latitudes blow from the west because they are influenced by the earth rotation. But it depends on the scale and time you are talking about.
Why don't hurricanes form in the Gulf of Mexico in January?
There are two reasons. First, hurricanes need warm ocean water to form. The water is generally not warm enough in January to support the formation of hurricanes. Second, upper level winds are strongest in the winter. Strong upper level winds mean strong wind shear, which prevents hurricanes form organizing.
Does the planet Venus have high winds?
Yes, in the upper atmosphere high winds have been observed.
