Tornadoes require
strong upper level winds, up to three miles above the ground, to contrast with slower currents near ground level in what's called wind shear.
Not exact matches
Updated February 21: Due to
strong upper -
level winds, SpaceX has postponed the launch to the same time on Thursday, 6:17 a.m. PST, 9:17 EST..
Winds will be
stronger at the
upper stories of high - rise buildings, up to a full category above surface -
level speeds.
Let's say your
wind speed is
strong, and the
wind direction is opposite between the
upper levels and the [ocean's] surface — then you get a
strong shearing environment.
Like Joby, these companies are exploiting new
strong, cheap materials, advanced control electronics, and an improved understanding of
upper -
level wind patterns.
Over the Atlantic basin, the amplified trough is associated with
stronger upper -
level westerly
winds and
stronger lower -
level easterly trade
winds, both of which increase the vertical
wind shear and suppress hurricane activity.
I made the connection, because some months ago, don't remember where, I read that
strong «
upper level winds» can actually, in some cases, intensify a thunderstorm, by increasing the strength of the updrafts within the cell.
Decreased
wind shear —
upper -
level winds that can disrupt hurricane formation — would lead to more and
stronger hurricanes.
back to the horizontal gradient, if the
upper tropospheric thermal
wind shear increase is greater than the decrease of the lower layer, then maybe the overall baroclinic instability would be
stronger — but currently the
upper level eddy circulations do not transport much heat poleward, so would the structure of cyclones change so that a deeper layer of air is involved in the thermal advection, compensating for a weaker temperature gradient?
El Niño events can lead to
stronger upper -
level winds over the tropical North Atlantic, which can tear nascent storms apart before they have a chance to strengthen.