| NONAME |
| (Weather Guru) |
| Fri Mar 03 2006 02:33 AM |
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ITCZ ? Movement and is it moving north now?
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I'm Just trying to get a better understanding about the ITCZ I would really like it if someone could tell me the movement of it and how tropical waves come off of it at africa. And a ? for right now is is it on the move north.
| Clark |
| (Meteorologist) |
| Fri Mar 03 2006 03:40 AM |
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Re: ITCZ ? Movement and is it moving north now?
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It shifts north and south over the course of the year, generally between 0-12N. It fluctuates between moving north and south from day to day, often as disturbances ride along it. It generally "bottoms out" near this time of year, e.g. reaches its southernmost extent, and will begin to creep further north as the season approaches.
| NONAME |
| (Weather Guru) |
| Tue Mar 07 2006 01:05 AM |
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Re: ITCZ ? Movement and is it moving north now?
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When Do tropical wave start sputtering out and coming in to the atlantic and crossing through Caribbean?
Does it have to do with a certain height the ITZC is at.
| Clark |
| (Meteorologist) |
| Tue Mar 07 2006 11:01 PM |
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Re: ITCZ ? Movement and is it moving north now?
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Tropical (or easterly) waves occur throughout the year, albeit with an increased frequency and amplitude toward hurricane season. It doesn't have so much to do with the location of the ITCZ from a north-south standpoint as it does other supporting factors toward their development.
danielw
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| (Moderator) |
| Wed Mar 08 2006 07:45 AM |
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Re: ITCZ ? Movement and is it moving north now?
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These links are to 5 Day Hovmoller diagrams for the Tropical Atlantic.
They are basically strips of satellite photos along the respective areas. A 5 day freeze frame.
As Clark said there isn't a lot of amplitude in the ITCZ right now. Using these diagrams you can visualize the day-to-day movement of each area.
You could print a page of each one to see the movement.
5-day Satellite Hovmöller diagrams
Tropical Atlantic and Caribbean (GOES-EAST)
http://www.nhc.noaa.gov/tafb_latest/gehov1latest.gif
Gulf of Mexico and subtropical Atlantic (GOES-EAST)
http://www.nhc.noaa.gov/tafb_latest/gehov2latest.gif
Eastern Atlantic and Africa (METEOSAT-7)
http://www.nhc.noaa.gov/tafb_latest/m7hov1latest.gif
Southern CONUS and subtropical Atlantic (GOES-EAST)
http://www.nhc.noaa.gov/tafb_latest/gehov3latest.gif
This link will give you a daily surface weather chart with the ITCZ emphasized.
http://www.nhc.noaa.gov/tafb_latest/TSA_latestBW.gif (black and white-wide area)
http://www.nhc.noaa.gov/tafb_latest/WATL_latest.gif (color-zoom on SW Atlantic/Carib/GOM)