Early Mappings of the Amazonian Outflow

Hey All!

So today I began looking into the salinity fields for the North Atlantic in search of any signals that may help fly south towards Brazil.  Our team has been thinking of looking into this to see if the Amazon and its fresh water fluxes may have any extending influences on this area. To start off our investigation, I plotted up some of the myocean data.


What it looks like from this perspective, is that the waters close to Brazil and along the shelf become much fresher and spill out a little into the North Atlantic, however subsurface, we see the Antarctic Intermediate Water creeping north.  This will need much more investigation as we get our other products up and working.

As for the currents, we still have some weak flows to the north, but to the south there is a strong jet that may prove to propel us towards the equator and maybe speed us up a bit.  But only time will tell and as for now, Silbo will continue to fight his way south on his journey across the Atlantic basin.

Today, we also did some testing on Challenger's compass, which caused us to drop a little to the south due to the influence of the small cold eddy I mentioned last night.

This evening however, once the testing was completed, the waypoint back to the north was reassigned and so on the morning surfacing we should have some new northward progress.

Force Wind Sea & Honor

2 Responses to “Early Mappings of the Amazonian Outflow”

  1. Frank Says:

    Hi Scott and Chip,
    Watching Challenger with interest. Any chance of updating the dives (T,S,rho)? Also, any ideas about how to start using this a s a practical session with our third year oceanography class? It starts in a weeks time and we will have Monday afternoon practicals in a computer lab , starting 11 Feb through the semester.

    Many thanks


  2. Scott Says:

    Thanks for all your help with the Challenger Glider Deployment in Cape Town. Armed with greater understanding of the horizontal component of the Earth's magnetic field, we have a plan for skirting the low as we head into international waters and turn north. This allows us to return to optimizing our flight characteristics and, in turn, optimizing our data flow for comparisons to the global ocean models.

    Our Ocean Observatories class in the U.S. met yesterday, about 75 students. There is HIGH interest in working more with your students at the University of Cape Town. We will form several working groups to work on different aspects of the gliders in Antarctica, the Mid Atlantic Bight of the U.S., and the Trans-Atlantic flights of Silbo and Challenger. One of the science-drivers for the Challenger Glider Mission is to asses the accuracy of the global ocean and available regional models as the gliders circumnavigate the planet. It would be great if one of the U.S. working groups can pair up with your students, and collectively compare your Southern Ocean gliders and Challenger with the Global Ocean Models and the satellite data around South Africa. Our students end the semester with a poster presentation. Joint South Africa-USA poster(s) will be great demonstration of our ability to bring students from different nations together. We will be in touch.

    Again, thanks to everyone in Cape Town for their warm hospitality.

    Scott, Chip, Dave & Tina.

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