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| COAST Meeting Summary | 17 January 2002 |
| J. Barth |
Today's speakers: Ricardo Letelier, Scott Durski Next Meeting: February 7, 2002 in Burt 176 at 3pm. We'll hear OcSci'02 talks from Lee Karp-Boss, Jack Barth, Michael Ott and Malinda Sutor. March Meeting: tentatively scheduled for March 14, 2002 in Burt 176 at 3pm. Presentations by Jim Moum (acoustics from Thompson) and Yvette Spitz (ecosystem modeling). Video conferencing: Our UNC colleagues inquired about video conferencing since non-OSU COASTers weren't getting the benefit of our monthly meetings. The new ECC2 conference room will NOT have video capability, but we can certainly do a voice link from either Burt 176 or the new ECC2 conf room. Roger suggested putting important graphics up on the web before the meeting. T-SHIRTS are in and have been delivered to PIs. PIs please pay Jack when convenient. A second order is going in so if we missed someone or you'd like a different size, please let Jack know. Upon Kathleen Ruttenberg's suggestion it was announced that COASTers might like to get together at the OcSci'02 meeting. Best time will probably be at noon on Thursday (or 5pm Thurs) after the COAST and WEST CoOP session on Thursday morning. We can announce when/where at the COAST OcSci session. A DRAFT Data Acknowledgement Policy was presented. It will be available soon on the COAST web site under "Planning documents". It is patterned quite closely after the GLOBEC policy. Please comment to Jack, Pat or John with the aim to have a policy which we can agree on at our March meeting. Data Inventory: We would like to assemble a data inventory of all the data collected during COAST. This will be posted on the web site. Jack will send around a template/example after Ocean Sciences with input due before the March meeting. We'll ask what, when, where, etc. and also ask when the data will be available for collaborative research. Once the inventory is in place we'll assemble a list of natural data comparisons that could be made (e.g., acoustics from each ship, ADCP velocity maps compared with radar velocity maps, etc.). Timeline: Jack forgot to show Sara Haines' nice COAST 2001 timeline, but it is viewable at (http://www.unc.edu/depts/marine/cool/COAST/timeline.jpg). Sara specifically requests locations and times of the Thompson activities so that she can add them to the plot. Pat was asked (after the meeting) to provide this information. When a new plot is generated, it will be posted on the COAST web site. Ricardo Letelier presentation: Main objective: Characterize the variability of the physiological state of phytoplankton assemblages and how this variability affects the biomass production and distribution in the study region. Ship measurements approach: - Characterize the scales of variability of phytoplankton photosynthetic parameters using Fast Repetition Rate fluorometry. - Validate these measurements at sea using 14C P vs E incubations, absorption spectra, and pigment composition (HPLC) Mooring observations: - Downwelling irradiance sensors at 7 wavelengths to monitor temporal changes in upper water column chl a concentration and fluorescence yield Drifters: - Same as for moorings but in a Lagrangian mode Remote sensing: - Using MODIS observations to develop large scale synoptic maps Ricardo covered a wide range of research interests being pursued by his and Mark Abbott's research group. Among these were Fast Repetition Rate fluorometry applied to the water pumped onboard the Thompson from Burke Hales' profiler. Together with underwater PAR, Ricardo hopes to construct 3D fields of primary productivity. He will ground truth those results with traditional P vs E productivity experiments conducted during the August COAST cruise. They are looking at HPLCs for phytoplankton assemblage info and at absorption pad spectra for comparison with ac-9 results (Cowles et al.). The moored radiometers appeared to work well, but there is some work to do cleaning up the data set. They also deployed 4 instrumented bio-optical drifters and data from those are available. Lastly, the MODIS satellite color data products were demonstrated. Scott Durski presentation: Scott is a physical oceanographer working with John Allen on numerical modeling of coastal circulation in the COAST region. He presented results from using the ROMS model to study instabilities on the upwelling fronts off Oregon. He is also investigating the use of non-hydrostatic models for examining coastal processes. Scott will present his results at OcSci'02.