Thoughts from MIT and WELCOME the AUVs TODAY!

Pierre sent on some great info to the team.

By the way, our forecasts are on this web-site: http://mseas.mit.edu/Sea_exercises/OOI-OSSE09/index.html
We have given our model fields to Arjuna and Henrik for the AUV planning tomorrow.

Interesting features that we discussed with Henrik and that can be explored with the AUVs are:

- Tidal effects (which we forecast will dominate at least for the first half of the day tomorrow due to weak wind forecasts), see for example: http://mseas.mit.edu/Sea_exercises/OOI-OSSE09/Tides/index_tides.html.

- The along-shore and cross-shore gradients (more interesting than a thermocline yoyo) since the water column is forecast to be relatively well-mixed in the AUV ops area, excepted mid-afternoon due surface warming (afternoon effect for the acousticians). The along-shore AUV-path to the north should show some colder waters slowly advected from the NY Bay. The cross-shore AUV path will also show a small temperature gradient in the area. Attached is a plot of T at 15m forecast for Nov 5 11am, EST.

- By the way, Oscar, the main mixing on the NJ shelf seems to have happened on Oct 25, with full mixing up to 30m depth (more or less). We just missed it by 1 week. This I think is link to the winter bloom we have observed in the glider data.

- For the curious and for John Wilkin, I also include a plot the the vertical avg 0-200m velocity that explains I think some of the features above the Hudson Valley that Yi talked about. You can see the tidal resonance (the forecast plot attached ccnt_VAV200Z_03Nov15z shows the strong flow conditions, with some internal tides elsewhere in the domain). At other times, the resonance leads to no tidal flow right above the valley, but strong flow on either side.

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