35-| Year Mean,°C 





X K1992 15.9 



.,•• ■. .. a— -01983-92 16.1 



30- 





25- 



O 



o 



v-ufffc./,, 



Air Temperature 



cn o cn o 



. . 1 . . . . 1 . , , , 1 . . . . 1 



-.a^..-^.-.^- '. ■-.•;. ;. • . . '.* 



0- 



'•■; • • 



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



Month 



Figure 3. Daily air temperature values with monthly means 



Results 



Daily and average atmospheric pressure values are presented in Figure 4, and summary statistics 

 are presented in Table 2. 



Precipitation 



Precipitation is generally well distributed throughout the year. Precipitation from mid-latitude 

 cyclones (northeasters) predominates in the winter, whereas local convection (thunderstorms) accounts 

 for most of the summer rainfall. 



Measurement instruments 



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 15 cm 

 and 1.0 percent for amounts greater than 15 cm. 



