daily observations have been summarized by month, season, or year to aid in 

 interpretation. If individual data are needed, the user can obtain the de- 

 tailed information by following the procedures described in Part I (para- 

 graphs 6 and 7) . 



Meteorology 



56. This section summarizes the meteorological measurements made at the 

 FRF in 1983. A discussion of the data and a comparison with previous years 

 are also presented. Appendix D contains hourly wind speed and direction and 

 atmospheric pressure values during storm conditions. 



Air temperature 



57. The marine climate at the FRF moderates the extremes of both summer 

 and winter as shown in Figure 4. The 1983 annual mean temperature (based on 

 four observations per day) was 15.9° C with a 3.6° C standard deviation. 

 Daily high and low temperatures, summarized in Table 3, show large variations 

 that are primarily caused by the effect of onshore/offshore winds and the tem- 

 perature difference between the ocean and land. Although infrequent, freezing 



o 83 



»4 



5 .5 



a. 



5 



JflN FEB MRS '^Pfi iPr JUN JUL HUG SEP OCT NOV DEE RNNUHL 

 rONTH 



Figure 4. Mean monthly air temperatures, 1983 



29 



