ITCZ On Sig. Weather Chart
Thread Starter
Joined: Mar 2003
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From: Here
ITCZ On Sig. Weather Chart
I've often wondered what significance the ITCZ is across North Africa as it is labelled on the significant weather chart across the region's chart. Is this a particular area of turbulence or is there any other issues associated with the ITCZ that it must be located on the chart?
Cheers
146
Cheers
146
Joined: Mar 2000
Aviation Qualifications: ATP+Mil
Posts: 1,428
Likes: 38
From: Long ago and far away ......
ITCZ in Africa? Whoo-hee, that can give you palpitations trying to get through/past it!
BAe 146-100, it would appear that you currently hold a PPL but are "working towards becoming an airline pilot". A closer look at the world climatology section of any good book about aviation met should give you a good insight - you'll need to know this stuff for a professional license.
Good luck.
BAe 146-100, it would appear that you currently hold a PPL but are "working towards becoming an airline pilot". A closer look at the world climatology section of any good book about aviation met should give you a good insight - you'll need to know this stuff for a professional license.
Good luck.
Thread Starter
Joined: Mar 2003
Posts: 1,053
Likes: 6
From: Here
How about massive CBs with tops at FL500+ ?
Holy lord! I've flown across that part of the world quite a few times but thankfully not this time of year when the ITCZ seems to be at its worst across North Africa. Must be quite a sight from the flight deck, no wonder why it is labelled, silly me thought it might have been only the odd CB here and there.
A closer look at the world climatology section of any good book about aviation met should give you a good insight - you'll need to know this stuff for a professional license.
Thanks for the advice; I find weather on the whole very interesting so studying it will be fairly pleasurable for me. I know some find it boring!
Cheers
146
Holy lord! I've flown across that part of the world quite a few times but thankfully not this time of year when the ITCZ seems to be at its worst across North Africa. Must be quite a sight from the flight deck, no wonder why it is labelled, silly me thought it might have been only the odd CB here and there.
A closer look at the world climatology section of any good book about aviation met should give you a good insight - you'll need to know this stuff for a professional license.
Thanks for the advice; I find weather on the whole very interesting so studying it will be fairly pleasurable for me. I know some find it boring!
Cheers
146
Joined: Apr 2005
Posts: 347
Likes: 0
From: Dubai
Hi 146,
As an ex operator in Nigeria, the ITCZ position was probably the dominant thing which descibed the local weather conditions as it moved up and down the country, slightly lagging the position of the sun's annual azimuth change with season. If the ITCZ was actually crossing the location, then as you already know, that's when the sharp rain squalls and thunderstorms would kick off usually lasting an hour or so. If the ITCZ was to the north, during the Northern Hemisphere Summer, then the rain was more persistant and could last for a couple of days, but was not as violent (all relative). When the ITCZ was to the south then then the high pressure in the Sahara kicked in and 'de Harmattan' started with bursts of thick dusty episodes, preceded by extensive fogs in some areas.
I'm sure that other areas in central Africa had other local variations, but essentially if you knew the position of the ITCZ in West Africa, you could usually made a good shot at a forcast.
What I am curious about is that the ITCZ is only indicated over the land mass of Continental Africa (maybe South America has it as well, but never operated there) Anyone have any ideas?
Regards
TOD
As an ex operator in Nigeria, the ITCZ position was probably the dominant thing which descibed the local weather conditions as it moved up and down the country, slightly lagging the position of the sun's annual azimuth change with season. If the ITCZ was actually crossing the location, then as you already know, that's when the sharp rain squalls and thunderstorms would kick off usually lasting an hour or so. If the ITCZ was to the north, during the Northern Hemisphere Summer, then the rain was more persistant and could last for a couple of days, but was not as violent (all relative). When the ITCZ was to the south then then the high pressure in the Sahara kicked in and 'de Harmattan' started with bursts of thick dusty episodes, preceded by extensive fogs in some areas.
I'm sure that other areas in central Africa had other local variations, but essentially if you knew the position of the ITCZ in West Africa, you could usually made a good shot at a forcast.
What I am curious about is that the ITCZ is only indicated over the land mass of Continental Africa (maybe South America has it as well, but never operated there) Anyone have any ideas?
Regards
TOD
was another. Says it all, really.
Joined: Jan 2001
Posts: 78
Likes: 2
From: UK
ITCZ
I met an ITCZ once. Off the coast of Malasia, in one of HM finest twinjets. Without any 'cloud & clonk', we unknowingly entered it at FL330, and, notwithstanding full airbrakes and closed throttles, were finally spat out of the top at in excess of 55,000ft. Eye watering stuff. Having a beer that evening in the 'swill', someone remarked that we were lucky not to have been caught in the downdraught bit!
Thread Starter
Joined: Mar 2003
Posts: 1,053
Likes: 6
From: Here
Thanks a lot guys for the insight much appreciated.
On the subject of weather can any of you recommend a good book for this sort of stuff available in the UK? I've seen a few, namely Meteorology For Pilots but wondered if there are any good ones out there that you can get in the UK?
Cheers
146
On the subject of weather can any of you recommend a good book for this sort of stuff available in the UK? I've seen a few, namely Meteorology For Pilots but wondered if there are any good ones out there that you can get in the UK?
Cheers
146
Joined: Apr 2000
Posts: 967
Likes: 43
From: 30 West
Hajj, 2001, flying from Solo Indonesia, the ITCZ was north of us for most of the second phase.
Never mind green, how about red, yellow and purple to the left and the right.
Pick the thinnest part and go though with the ignition on !
Quite interesting
Never mind green, how about red, yellow and purple to the left and the right.
Pick the thinnest part and go though with the ignition on !
Quite interesting
Joined: Aug 2004
Posts: 22
Likes: 0
From: blue yonder
ITCZ
Its basically the convergence 'Zone' of air masses and as such usually affects the weather pattern along the tropics.
It keeps the 'date' with the movement[apparent] of the Sun, going high [higher latitudes] during the Summers in the N hemisphere and lying much South during the winters [summer for S hemisphere].
Even the 'Great Migration' in Africa bordering Tanzania/Kenya is played out as per the ITCZ movement. ITCZ also extends across the Indian sub-continent though not displayed on Sig Wx charts.
Check the British Museum at London for an great animated display.
It keeps the 'date' with the movement[apparent] of the Sun, going high [higher latitudes] during the Summers in the N hemisphere and lying much South during the winters [summer for S hemisphere].
Even the 'Great Migration' in Africa bordering Tanzania/Kenya is played out as per the ITCZ movement. ITCZ also extends across the Indian sub-continent though not displayed on Sig Wx charts.
Check the British Museum at London for an great animated display.
Joined: Aug 2000
Posts: 3,648
Likes: 2
From: UK
The ITCZ on SigWx charts has the same significance as do the fronts on those charts, but obviously different dynamics. Apparently ICAO doesn't think the significance is that great, because from 7 November 2007 all WAFC SigWx charts will cease to have fronts and ITCZ included.
