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Validation of an equatorial Atlantic simulation model using inverted echo sounder data
200
A. PhysicalOceanography
OLR(1986)33 (3)
86:1379 Garzoli, S.L. and S.G.H. Philander, 1985. Validation of an equatorial Atlantic simulation model using inverted echo sounder data. J. geophys. Res, 90(C5):9199-9201.
86:1383 Young, I.R., Wolfgang Rosenthal and Friedwart Ziemer, 1985. Marine radar measurements of waves ~ld currents dllring tnrnin~ winds. Dt. hydrogr. Z., 38(1):23-38.
Changes in the vertically averaged temperature of the water column are described in terms of empirical orthogonal fimctions. These modes are compared with those from a similar analysis for data from a general circulation model of the tropical Atlantic. The method proves to be useful for the validation of models. Lamont-Doherty Geol. Observ., Palisades, NY 10964, USA.
Navigational radar has been used to obtain 2-D wave spectra in the North Sea. It is shown how the wave spectra change in response to changing wind direction. Near surface currents obtained with the radar are compared with current measurements by CODAR. Dept. of Civil and Systems Engrg., James Cook Univ., Townsville, Qld. 4811, Australia.
86:1380 Lambrakos, K.F., 1985. Tidal boundary layer measurements in the presence of waves. Ocean Engng, 12(4):271-291.
Measurements of tidal current and wave velocity made at 0.69 and 1.85 m above a rough seafloor exhibit large current gradients (boundary layer) in the water column. Roughness parameter values were generally consistent with the observed upstream physical roughness. The values of both roughness and friction velocity parameters for conditions in the rough turbulence flow regime are generally larger (much larger for ebb) than earlier published values for currents in the absence of significant waves but comparable to values for currents in the presence of storm waves. Exxon Prod. Res. Co., P.O. Box 2189, Houston, TX 77001, USA. 86:1381 Maul, G.A. and N.J. Bravo, 1985. Correction to 'FiRing of satellite and in--situ ocean surface temperatures: results for POLYMODE during the winter of 1977-1978' by George A. Maul and Nicolas J. Bravo (Journal of Geophysical Research 88(C14):9605-9616). J. geophys. Res., 90(C5):9211-9213. 86:1382 Simons, T.J., 1985. Reliability of circulation models. J. phys. Oceanogr., 15(9):1191-1204.
Current meter observations in Lake Ontario are used to evaluate the performance of circulation models for different time scales. Measurements were taken in a single cross-section of the lake with sufficiently high resolution to verify conservation of total water transport through the section. The results indicate that a typical linear hydrodynamic model can reproduce short- and medium-term circulations induced by wind variations, but that nonlinear effects must be included to simulate seasonal-mean current patterns. Natl. Water Res. Inst., Burlington, ON L7R 4A6, Canada.
A40. Area studies, surveys 86:1384 Balopoulos, E.T. and A.E. James, 1984. Drogue measerements of the upper layer circulation in Thermaikos Gulf, N.W. Aegean Sea (Greece). Thalassographica, 7:73-94. Inst. of Oceanogr. and Fish. Res., GR-166 04, Hellinikon, Greece. 86:1385 Forbes, A.M.G., 1984. The contribution of local processes to seasonal hydrology of the Gulf of Carpentaria, Oc~anographie trop., ORSTOM, 19(2):193-201. CSIRO Mar. Lab., P.O. Box 1538, Hobart, Tas. 7001, Australia. 86:1386 Freire, G.S.S~I, M.A.de Oliveira and Edsard de Andrade, 1984. [Temperature, saUnlty, dissolved oxygen and water mass distrlbmion between I-4°N and 40--42°W, northeastern BraziL] Arq. Ci~nc. Mar, Bras, 23:1-9. (In Portuguese, English abstract.) Lab. de Cien. do Mar., Univ. Fed. do Ceara, Fortaleza, Ceara, Brasil. 86:1387 Grant, W.D., A.J. Williams III and T.F. Gross, 1985. A description of the bottom boundary layer at the HEBBLE site [Nova Scotian continental rise]: low-frequency forcing, bottom stress and temperatme structure. Mar. Geol~ 66(1-4):219-241.
Near-bottom flow during an 80-day deployment period is described as low-frequency motions having fluctuations of 20 days or more. Velocity at one meter (0-17 cm s-L) suggested low-frequency modulation of the boundary layer depth. Two flow events corresponded to weak and moderate benthic storms accompanied by significant sediment resuspension. The observed low-frequency flow may result from low-frequency, bottom-trapped, topographic waves, a background current, and barotropic
A. PhysicalOceanography
OLR(1986)33 (3)
86:1379 Garzoli, S.L. and S.G.H. Philander, 1985. Validation of an equatorial Atlantic simulation model using inverted echo sounder data. J. geophys. Res, 90(C5):9199-9201.
86:1383 Young, I.R., Wolfgang Rosenthal and Friedwart Ziemer, 1985. Marine radar measurements of waves ~ld currents dllring tnrnin~ winds. Dt. hydrogr. Z., 38(1):23-38.
Changes in the vertically averaged temperature of the water column are described in terms of empirical orthogonal fimctions. These modes are compared with those from a similar analysis for data from a general circulation model of the tropical Atlantic. The method proves to be useful for the validation of models. Lamont-Doherty Geol. Observ., Palisades, NY 10964, USA.
Navigational radar has been used to obtain 2-D wave spectra in the North Sea. It is shown how the wave spectra change in response to changing wind direction. Near surface currents obtained with the radar are compared with current measurements by CODAR. Dept. of Civil and Systems Engrg., James Cook Univ., Townsville, Qld. 4811, Australia.
86:1380 Lambrakos, K.F., 1985. Tidal boundary layer measurements in the presence of waves. Ocean Engng, 12(4):271-291.
Measurements of tidal current and wave velocity made at 0.69 and 1.85 m above a rough seafloor exhibit large current gradients (boundary layer) in the water column. Roughness parameter values were generally consistent with the observed upstream physical roughness. The values of both roughness and friction velocity parameters for conditions in the rough turbulence flow regime are generally larger (much larger for ebb) than earlier published values for currents in the absence of significant waves but comparable to values for currents in the presence of storm waves. Exxon Prod. Res. Co., P.O. Box 2189, Houston, TX 77001, USA. 86:1381 Maul, G.A. and N.J. Bravo, 1985. Correction to 'FiRing of satellite and in--situ ocean surface temperatures: results for POLYMODE during the winter of 1977-1978' by George A. Maul and Nicolas J. Bravo (Journal of Geophysical Research 88(C14):9605-9616). J. geophys. Res., 90(C5):9211-9213. 86:1382 Simons, T.J., 1985. Reliability of circulation models. J. phys. Oceanogr., 15(9):1191-1204.
Current meter observations in Lake Ontario are used to evaluate the performance of circulation models for different time scales. Measurements were taken in a single cross-section of the lake with sufficiently high resolution to verify conservation of total water transport through the section. The results indicate that a typical linear hydrodynamic model can reproduce short- and medium-term circulations induced by wind variations, but that nonlinear effects must be included to simulate seasonal-mean current patterns. Natl. Water Res. Inst., Burlington, ON L7R 4A6, Canada.
A40. Area studies, surveys 86:1384 Balopoulos, E.T. and A.E. James, 1984. Drogue measerements of the upper layer circulation in Thermaikos Gulf, N.W. Aegean Sea (Greece). Thalassographica, 7:73-94. Inst. of Oceanogr. and Fish. Res., GR-166 04, Hellinikon, Greece. 86:1385 Forbes, A.M.G., 1984. The contribution of local processes to seasonal hydrology of the Gulf of Carpentaria, Oc~anographie trop., ORSTOM, 19(2):193-201. CSIRO Mar. Lab., P.O. Box 1538, Hobart, Tas. 7001, Australia. 86:1386 Freire, G.S.S~I, M.A.de Oliveira and Edsard de Andrade, 1984. [Temperature, saUnlty, dissolved oxygen and water mass distrlbmion between I-4°N and 40--42°W, northeastern BraziL] Arq. Ci~nc. Mar, Bras, 23:1-9. (In Portuguese, English abstract.) Lab. de Cien. do Mar., Univ. Fed. do Ceara, Fortaleza, Ceara, Brasil. 86:1387 Grant, W.D., A.J. Williams III and T.F. Gross, 1985. A description of the bottom boundary layer at the HEBBLE site [Nova Scotian continental rise]: low-frequency forcing, bottom stress and temperatme structure. Mar. Geol~ 66(1-4):219-241.
Near-bottom flow during an 80-day deployment period is described as low-frequency motions having fluctuations of 20 days or more. Velocity at one meter (0-17 cm s-L) suggested low-frequency modulation of the boundary layer depth. Two flow events corresponded to weak and moderate benthic storms accompanied by significant sediment resuspension. The observed low-frequency flow may result from low-frequency, bottom-trapped, topographic waves, a background current, and barotropic