Question about upwelling

[Rieyeuxs]

Another newbie question (or 3! ) for those in the know...

I understand upwelling from a previous storm brings up cooler waters in its wake, BUT...

1) How deep do storm waters effect? Are we talking about 100-500 ft? That sounds deep, but in the vastness of the oceans, that's not much.

2) This question somewhat depends on the first... How long does the upwelling last? Only the duration of the storm, or longer? If only for the duration of the storm, 1-2 days over a typical spot of ocean doesn't seem like much time for a complete water turnover.

3) And given the average average mid 80-mid 90 temps in the Gulf, I would think that any upwelling would have "reheated" by now, given that hot air (or water) rises and cooler sinks (denser salinity) How long on average does it take for water temps to return to "normal"?

Not to belittle Katrina in any way, but I would think that the Gulf waters would have "resettled" by now. Can anybody give any info?

I was curious because many people are talking about Katrina's upwell surpressing new/increasing development for Rita and I was curious about long-term effects in a relatively shallow Gulf (vs Atlantic proper)...

[JamesFromMaine2]

Another newbie question (or 3! ) for those in the know...

I understand upwelling from a previous storm brings up cooler waters in its wake, BUT...

1) How deep do storm waters effect? Are we talking about 100-500 ft? That sounds deep, but in the vastness of the oceans, that's not much.

2) This question somewhat depends on the first... How long does the upwelling last? Only the duration of the storm, or longer? If only for the duration of the storm, 1-2 days over a typical spot of ocean doesn't seem like much time for a complete water turnover.

3) And given the average average mid 80-mid 90 temps in the Gulf, I would think that any upwelling would have "reheated" by now, given that hot air (or water) rises and cooler sinks (denser salinity) How long on average does it take for water temps to return to "normal"?

Not to belittle Katrina in any way, but I would think that the Gulf waters would have "resettled" by now. Can anybody give any info?

I was curious because many people are talking about Katrina's upwell surpressing new/increasing development for Rita and I was curious about long-term effects in a relatively shallow Gulf (vs Atlantic proper)...

Ok first of all the warm or in this case hot SSts go down diffrent amounts in diffrent spots. You can have on area where the SSTs go down far and then another area where they are just at the surface. The Duration that they stay colder depends on the weather. If a storm goes through and upwells colder water then it turns colder outside then it will take longer to reheat. In the case of the GOM and Katrina the GOM is already back to where it was before Katrina came through.