CAT & the Jetstream

[airyana]

"if jetstream turbulence is encountered in a cross wind, either climb or descend after watching the temperature gauge for a minute or two:

if the temperature is rising Climb
if the temperature is falling Descend

application of these rules will prevent staying in the turbulent area."

Q: is this statement correct ?

if it is can you please explain why ....

cheers

[Rainboe]

Can you explain where you copied that from?

[airyana]

it does sound weird doesnt it ?

I copied it from a book.

[BOAC]

Sounds like a classic 'met exam question'! I just put the seatbelt signs on.

IIRC, the 'classic' jetstream (greatest temperature shear) is found in the warm sector, just below the trop, ie in the 'top corners'. I cannot at the moment 'explain' your 'rule of thumb, but maybe the secret is in there somewhere? Falling temperature does - paradoxically - IIRC, indicate you are moving into the warm sector with the higher trop. Bear in mind CFS was some xxx years ago and my books have long been 'heaved', so that could all be gibberish

Paging a met expert... paging a ....................

[airyana]

go on BOAC, say it

[Contract Con]

Gday,

I was taught that the "bottom of the jet on the polar side" was typically the worst area for CAT.

In my experience this has proven to be the case too.

I am interested in the temperature method Airyana and BOAC describe though.

Anyone??

Cheers,

Con

[airyana]

we'll have to wait for someone to tell us both because i have no clue . . .