O) 



a> 



TJ 



UJ 

 Q£ 



a: 



u 



Q. 



2 



30.0-, 



25.0- 



20.0- 



15.0- 



10.0- 



5.0- 



0.0 



YEAR 



MEAN.'C 



16.0 

 15.7 



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



MONTH 



Figure 3. 1985 mean monthly air temperatures 



18. Microbarograph . A Weathertronics, Incorporated (Sacramento, 

 Calif.), recording aneroid sensor (microbarograph) located in the laboratory 

 building also was used to continuously record atmospheric pressure variation. 



19. The microbarograph was compared daily with the NWS aneroid barome- 

 ter, and adjustments were made as necessary. Maintenance of the micro- 

 barograph consisted of inking the pen, changing the chart paper, and winding 

 the clock every 7 days. During the summer, a meteorologist from the NWS 

 checked and verified the operation of the barometer. 



20. The microbarograph was read and inspected daily using the following 

 procedure: 



a. The pen was zeroed (where applicable) . 



b. The chart time was checked and corrected, if necessary. 

 £. Daily reading was marked on the chart for reference. 



d. The starting and ending chart times were recorded, as 

 necessary. 



e. New charts were installed when needed. 



17 



