Table 2 

 Monthly Mean Air Temperature and Atmospheric Pressure Statistics 









Air Temperature; 



, °c 



Atmoi 



spheric Pressure 



, mb* 



Month 



1985 



1983-1984 



1983-1985 



1985 



1983-1984 



1983-1985 



Jan 



2.6 



6.2 



5.0 



1012.9 



1019.2 



1017.1 



Feb 



5.1 



7.1 



6.4 



1019.8 



1015.7 



1017.2 



Mar 



10.3 



8.9 



9.4 



1017.7 



1012.0 



1014.0 



Apr 



16.1 



13.0 



14.0 



1015.7 



1012.9 



1013.9 



May 



19.3 



19.0 



19.1 



1013.6 



1016.4 



1015.4 



Jun 



23.0 



23.4 



23.3 



1013.8 



1016.3 



1015.5 



Jul 



25.3 



26.1 



25.8 



1016.0 



1016.9 



1016.6 



Aug 



24.9 



25.6 



25.3 



1017.5 



1016.0 



1016.5 



Sep 



22.9 



20.3 



21.0 



1016.7 



1018.4 



1017.8 



Oct 



19.7 



17.9 



18.5 



1019.4 



1020.4 



1020.0 



Nov 



15.9 



11.8 



13.3 



1016.7 



1017.9 



1017.5 



Dec 



7.0 



9.4 



8.6 



1019.1 



1020.7 



1020.2 



Annual 



16.0 



15.7 



15.8 



1016.9 



1016.9 



1016.8 



Multiply millibars by 100.0 to obtain pascals. 



during spring and autumn, and near normal during the summer, as shown in Fig- 

 ure 3. The annual average air temperature was 0.3° C above the average for 

 1983 and 1984. 



16. All years. The coldest month of the year is January, with an aver- 

 age temperature of 5.0° C (Table 2). Temperatures slowly increase through 

 March. In the spring the temperature rises more than 9° C, then it remains 

 near 25° C through July and August. By the end of autumn the temperatures 

 fall 17° C. The annual average temperature is consistently near 15.8° C. 



Atmospheric Pressure 



Measurement instruments 



17. Electronic atmospheric pressure sensor. Atmospheric pressure was 

 measured with a YSI electronic sensor with analog output located in the labo- 

 ratory building at 9 m above NGVD. Data were recorded on the FRF computer. 

 Data from this gage were compared with those from an NWS aneroid barometer at 

 least once a week to ensure proper operation. 



16 



