looked up some scientific explanations and just ended up getting annoyed, I need surfer explanations bc im a commoner.
how does south wind make the water go to 50 degrees in july in jersey??
you'd think a south wind would push warmer water from down south up north and either keep temps the same or give em a bump and north/east winds would cool it down by pushing surface currents toward us.
really only looked into upwelling when goin' to OBX deciding what rubber to bring. there I get it. its so exposed..blah blah.
anybody got a simplified explanation?... sh!t is fascinating to me...
For some reason wind blowing parallel to the beach causes the surface water to move at a right angle and go offshore, the void is filled by the deep cold water from below. It has something to do with the earths rotation but for the life of me I can't remember that far back to college level oceanography.
It's got to have something to do with No. Jerz having so much east-facing coastline to which southerlies are true sideshore winds. I initially thought the same as you with all things south bringing warmer things this way. But a warmer wind isn't going to heat up such a substantial volume of water very much. It seems to be all about the nutrient-rich water rising up from the deep and that's water that is too deep to absorb heat from the sun or ambient air.
Micah, I think you've had good responses to this in the past. What's good bro?
same reason the water spins down your toilet when you flush
I get that a void is being filled but how does deeper cold water beat out warmer surface water that is being driven by the wind to the same spot?
water temp is really determined by currents is why this perplexes me. I didn't realize it til my fisherman homie from up north told me that he had seen 85 degree water off shore near georges bank. I called his bluff, looked it up, and he was spot on. crazy ish.
You're gonna have to forgive my extreme dorky-ness... but the answer is, we really don't know for sure. That's because most of the studies on upwelling were done on the California coast, not here, and so there's not been adequate research and data collection to explain the subtleties of how it works along the Mid Atlantic Bight.
But we do know this... the tremendous amount of variation along our coastline (the MAB) creates variations in upwelling patterns, different angles of the shoreline not being the only factor. Perhaps of more significance is the outflow of more buoyant water from rivers, bays, and estuaries, where lower salinity and higher temperature creates disturbances in the typical upwelling patterns. If this interests you, look up ekman transport, and read this article... http://journals.ametsoc.org/doi/pdf/...U%3E2.0.CO%3B2