zeroed (where applicable); (b) the chart time was checked and corrected, if 

 necessary; (c) a daily reading was marked on the chart for reference; (d) the 

 starting and ending chart times were recorded, as necessary; and (e) new 

 charts were installed when needed. Sample chart records for the microbaro- 

 graph (atmospheric pressure), rain gage, and pyranograph (solar radiation) are 

 presented in Figure 3. The daily reading was recorded for all instruments 

 except the pyranograph. As the instruments were read, weather information 

 such as cloud cover, visibility, and predominant weather conditions were 

 visually obtained. Note that the cloud cover, visibility, dew point and at- 

 mospheric pressure summaries presented in Part V were prepared from single 

 daily observations made near 0700 EST and thus do not represent daily or 

 hourly averages; therefore, caution should be exercised when interpreting the 

 results. 



50. The wind data provided in this report were based on wind speed and 

 direction values determined every 6 hr from the instrument chart records and 

 represent estimated average values based on 10 min of record. 



Analysis 



51. Wind roses were computed for the wind speed and direction values 

 obtained every 6 hr. The directions were specified at 22.5-deg intervals, 

 i.e., at l6-point-compass-direction specifications. Frequency distributions 

 (wind roses) of wind speed for each direction were computed for the entire 

 year, each 3-month season, and monthly. Resultant directions and speeds were 

 determined also by vector-averaging the data. 



52. Dew-point values reported on herein were determined from psychrom- 

 eter readings by computing the wet-bulb temperature depression (dry bulb minus 

 wet bulb) and by using Table 19 in Appendix III of the Weather Service Observ- 

 ing Handbook No. 1 — Marine Surface Observations (NOAA/NWS 1979). 



Visual Observations 



53. At the FRF, daily visual observations were made near 0700 hours to 

 supplement instrumented data collection. These included observations of sur- 

 face current speed and direction at (a) the seaward end of the pier, (b) the 

 midsurf position on the pier, and (c) on the beach 500 m updrift of the pier. 

 Also measured were the wave approach angle at the seaward end of the pier and 

 the breaker angle and type nearshore. 



19 



