. Collected reprints, Essa Institute for Oceanography. Oceanography CURRENT AND WIND DATA 327 NEMOME TER UMINUM PIPE (1/4 I 66 0 0 X 140 WALL LENGTH AS HEOU1RE0 ND RECORDER In the summer of 1964 a vane was added to each of the buoy stations to keep the anemometer oriented in a favorable direction most of the time and the infor- mation needed for making cor- rections in wind direction has also been kept on file, but no corrections have actually been applied to the data. The wind vane is more re- sponsive than one would like for this type of study. However, much uf the overshooting
. Collected reprints, Essa Institute for Oceanography. Oceanography CURRENT AND WIND DATA 327 NEMOME TER UMINUM PIPE (1/4 I 66 0 0 X 140 WALL LENGTH AS HEOU1RE0 ND RECORDER In the summer of 1964 a vane was added to each of the buoy stations to keep the anemometer oriented in a favorable direction most of the time and the infor- mation needed for making cor- rections in wind direction has also been kept on file, but no corrections have actually been applied to the data. The wind vane is more re- sponsive than one would like for this type of study. However, much uf the overshooting of the vane proper is eliminated by the oil dampened vane follower (Rich- ardson, Stimson and Wilkins 1963). OBSERVATIONAL DATA The photographic film is sent to Geodyne Corporation^ for developing. The observations must be transferred from photo- graphic film to magnetic tape. This was accomplished for most of the data prior to August 1965 by Information International Inc.^^ (ni). Some earlier data and most data after August 1965 have been transferred by Geodyne. Webster (1964) has described the data transferral process used by both companies in sufficient detail. However, one difference should be mentioned. Since the fall of 1963, two directional readings have been obtained from each observational interval analyzed by ni and the arithmetic mean of these two (allowing for the discontinuity 360° - 1°) is accepted as the true direction. This process was adopted to reduce the effect of vane overshoot. A detailed examination of data samples from several stations indicates that the error due to overshoot is insignificant about 90% of the time, and that this simple cor- rection is sufficient for the correction of most overshoot errors. All of the wind data for September 1963 have been analyzed by obtaining average velocities. The computer was used to prepare printout charts with the wind data entered on them. A sample chart, including a few merchant ship observations, is shown in
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