instrument readings, weather information such as cloud cover, visibility, and 

 predominant weather conditions were visually obtained. 



66. The monthly meteorological data tables in Appendix A 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 inter- 

 preting the results. 



67. The wind information provided in this report, excluding that found 

 in the tables of Appendix A, was based on wind speed and direction values de- 

 termined every 6 hours from the instrument chart records and represents esti- 

 mated average values based on 10 minutes of record. 



Meteorological data analysis 



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

 obtained every 6 hours. The directions were specified at 22.5-deg intervals; 

 i.e., a l6-compass-point-direction specification. Frequency distributions of 

 wind speed for each direction were computed for the entire year, each 3-month 

 season, and monthly. In addition to the wind roses, resultant directions and 

 speeds were determined by vectorally adding each observation. 



69. Dew point values reported herein were determined from psychrom- 

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

 minus wet bulb) and using Table 19 in Appendix 111 of "Weather Service Observ- 

 ing Handbook No. 1--Marine Surface Observations" (National Oceanic and Atmo- 

 spheric Administration, National Weather Service 1974). 



70. The atmospheric pressure trend is a number which specifies the 

 manner and amount of pressure change occurring over a 3-hour interval before 

 the pressure reading is made. The first number of the three-digit code repre- 

 sents the characteristics of the change and was determined by comparing the 

 barograph record to Table 17, Appendix III, of the Weather Service Observing 

 Handbook. The last two digits of the pressure trends are a code which indi- 

 cates the magnitude of the change and was determined from Table 18, Appen- 

 dix III, of the NWS Handbook. 



Visual data collection 



71. At the FRF, daily visual observations made near 0700 hours and con- 

 forming to CERC's Littoral Environmental Observation (LEO) Program (Schneider 

 1981) were obtained to supplement instrumented data collection. These in- 

 cluded observations of surface current speed and direction and wave-approach 

 angle at the seaward end of the FRF pier. 



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