ConvergenceZone wrote:Derek Ortt wrote:This is highly unlikely to hit the TUTT
Okay, I apologize if this is an ignorant question, but what is TUTT?
Thanks
Dusty (who's still learning here).
This question came up in a Talking Tropics thread.
Perhaps some people can shead some light on TUTT.
A question that I have about TUTT is 2 fold.
Question 1:
How exactly does a TUTT aid in development of and Tropical Cyclone?
2:
What are some storms that are a good example of a TUTT enhancing a cyclone?
Here is the Definition
A Tropical Upper Tropospheric Trough (TUTT) is a trough situated in upper level (at about 200 hPa) tropics. Its formation is usually caused by the expansion of the Trough of Westeriles Wind to the tropics. It can also develop from the inverted trough at the south of a upper level anticyclone. TUTTs are different from mid-latitude troughs in the sense that they are maintained by subsidence warming near the tropopause which balances radiation cooling.
TUTTs sometimes brings a large amount of vertical wind shear over tropical disturbances and cyclones and thus hinder their development. On the contrary, there are cases that TUTTs assist the genesis and intensification of tropical cyclones by providing additional forced ascent near the storm center and an efficient outflow channel in the upper troposphere. Moreover, under specific circumstances, TUTTs can grow into upper cold lows and may enhance the development of low level disturbances.
http://en.wikipedia.org/wiki/Tropical_U ... ric_Trough