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NOAA/NOS/OCS/Coast Survey Development Laboratory Lyon Lanerolle 1,2, Richard Patchen 1 and Frank Aikman III 1 1 National Oceanic and Atmospheric Administration.

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Presentation on theme: "NOAA/NOS/OCS/Coast Survey Development Laboratory Lyon Lanerolle 1,2, Richard Patchen 1 and Frank Aikman III 1 1 National Oceanic and Atmospheric Administration."— Presentation transcript:

1 NOAA/NOS/OCS/Coast Survey Development Laboratory Lyon Lanerolle 1,2, Richard Patchen 1 and Frank Aikman III 1 1 National Oceanic and Atmospheric Administration (NOAA) National Ocean Service/Office of Coast Survey/Coast Survey Development Laboratory 1315 East-West Highway, Silver Spring, MD 20910 2 Earth Resources Technology (ERT) Inc. 10810 Guilford Road, Suite 105, Annapolis Junction, MD 20701

2 NOAA/NOS/OCS/Coast Survey Development Laboratory CBOFS2 Model Grid

3 NOAA/NOS/OCS/Coast Survey Development Laboratory CBOFS2 Rivers for Forcing River volume discharge adjustment factors (Wen Long)

4 NOAA/NOS/OCS/Coast Survey Development Laboratory CBOFS2 Total River Volume Discharge Events Dry Periods

5 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Surface Temperature Temperature ( o C) Temp. Difference ( o C) Difference = CBOFS2 with new river Q weights – original CBOFS2 hindcast run

6 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Bottom Temperature Temperature ( o C) Temp. Difference ( o C)

7 NOAA/NOS/OCS/Coast Survey Development Laboratory Winter Time Surface Temperature Temperature ( o C) Temp. Difference ( o C)

8 NOAA/NOS/OCS/Coast Survey Development Laboratory Winter Time Bottom Temperature Temperature ( o C) Temp. Difference ( o C)

9 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Surface Salinity Salinity (PSU) Salt. Difference (PSU)

10 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Bottom Salinity Salinity (PSU) Salt. Difference (PSU)

11 NOAA/NOS/OCS/Coast Survey Development Laboratory Winter Time Surface Salinity Salinity (PSU) Salt. Difference (PSU)

12 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Bottom Salinity Salinity (PSU) Salt. Difference (PSU)

13 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Lower Bay Conditions Difference = CBOFS2 with new river Q weights – original CBOFS2 hindcast run

14 NOAA/NOS/OCS/Coast Survey Development Laboratory Summer Time Upper Bay Conditions

15 NOAA/NOS/OCS/Coast Survey Development Laboratory Winter Time Lower Bay Conditions

16 NOAA/NOS/OCS/Coast Survey Development Laboratory Winter Time Upper Bay Conditions

17 NOAA/NOS/OCS/Coast Survey Development Laboratory Summary and Conclusions CBOFS 2 river volume discharges need adjusting to compensate for ground, surface water effects, etc. Effect of adjustments clearly manifested in the CBOFS2 T and S predictions Spatial (horizontal) T and S differences at surface and bottom are similar Differences in T mainly at Bay mouth, shelf and in tributaries and ± 1 o C Differences in S more clearly seen specially in tributaries and are ± 1.5 PSU T, S differences in Bay axis appear to get washed out to the Bay mouth & shelf Spatio-temporal (depth vs. time) T, S differences show that : (i) in lower Bay they are localized near the surface but otherwise distributed throughout the water column, (ii) in upper Bay the differences are more stratified with less variations and (iii) Summer-Winter differences are not dissimilar


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