35-1 



30- 



25- 



d) 20 



-5 



Year Mean, C 



x K1989 16.0 



9 ©1983-89 15.7 



-•♦"•'-T3& •••••v 



JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 



Month 

 Figure 3. Daily air temperature values with monthly means 



Results 



18. Daily and average atmospheric pressure values are presented in 

 Figure 4, and summary statistics are presented in Table 2. 



Precipitation 



19. Precipitation is generally well distributed throughout the year. 

 Precipitation from midlatitude cyclones (northeasters) predominates in the 

 winter, whereas local convection (thunderstorms) accounts for most of the 

 summer rainfall. 



Measurement instruments 



20. Electronic rain gage. A Belfort Instrument Company (Baltimore, MD) 

 30-cm weighing rain gage, located near the instrument shelter 47 m behind the 

 dune, measured daily precipitation. According to the manufacturer, the 

 instrument's accuracy was 0.5 percent for precipitation amounts less than 



12 



