. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 606 JOURNAL OF PHYSICAL OCEANOGRAPHY Volume 4 -1 -2 I a. u o UJ £-3H o o •J -4 -5- -2. 10M 95% -1 0 1 LOG (CPH) 0- 10M -1- -1 V I a. Jl-2- fik Ll \ O UJ O o —I ^f \ -4- -5- [957. 1 1 -2 -1 0 1 LOG (CPH) Fig. 5. Temperature spectra at 10 m for daytime (D), a., and nighttime (N), b. Vertical bar indicates confidence limit at the 95% level. 5. Daytime heating and nocturnal cooling a. Data analysis In order to consider the processes occurring during the
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 606 JOURNAL OF PHYSICAL OCEANOGRAPHY Volume 4 -1 -2 I a. u o UJ £-3H o o •J -4 -5- -2. 10M 95% -1 0 1 LOG (CPH) 0- 10M -1- -1 V I a. Jl-2- fik Ll \ O UJ O o —I ^f \ -4- -5- [957. 1 1 -2 -1 0 1 LOG (CPH) Fig. 5. Temperature spectra at 10 m for daytime (D), a., and nighttime (N), b. Vertical bar indicates confidence limit at the 95% level. 5. Daytime heating and nocturnal cooling a. Data analysis In order to consider the processes occurring during the heating portion of the diurnal cycle separately from those of the cooling portion, six 8-hr segments of the 10, 20, 30 and 40 m quartz thermometer records were selected for analysis. The starting time, / = 0, of the quartz thermometer record was JD 272 1634 GMT. The segments selected for analysis of daytime processes were hours , and 49-57. Average spectra for each quartz thermometer for these three daytime segments were calculated using the low-pass filtered data described in Section 3. Also, the low-pass filtered data was high-passed using a Lanzos taper which was essentially one minus the low-pass filter for the diurnal heating cycle described in Section 4. Using the band-passed data, only the and 49-57 hour segments could be used for analysis, since J91 data points were lost at each end of the time series* during the filtering. The resulting average spectra for the 10, 20, 30 and 40 m thermometers for the daytime segments are shown in Figs. 5a-8a. The 95% confidence intervals are indicated on the graphs. The three 8-hr segments of the quartz thermometer temperature records at 10, 20, 30 and 40 m selected for analysis as characteristic nighttime periods were hours 9-17, 36-44 and 60-68. The average spectra from the band-passed data for these nighttime periods are shown in Figs. 5b through 8b. The 95% confidence in- tervals are shown on th
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