BULLETIN No. 327. 



MARCH, 1916 



Meteorological Observations 



AT THE 



MASSACHUSETTS 



AGRICULTURAL EXPERIMENT 



STATION. 



Latitude, 42° 23' 48.5" N. Longitude 72° 31' 10" W. 



Height of barometer above ground, 51 ft. Above sea level, ^73-5 fl- 

 Height oj Wind Instruments 72 ft. 



MONTHLY SUMMARY. 



Pressure. In inches. 

 Maximum reduced to freezing, 30.12, 2d, 3 A 

 Minimum reduced to freezing, 28.87, 8th, 1? p 

 Reduced! maximum reading, 30.44, 2d, 3 A 

 Reducedt minimum reading, 29.19, 8th, 12 p 



Mean semi-daily reduced 29.955 



Monthly range 1.25 



*Air Temperature. In Degrees Fahr. 



Highest 66.0, 31st, 3:30 P 



Lowest 0.0, nth, 11 P 



Mean hourly 26.4 



Mean of means of max. and min 26.8 



Mean sensible (wet bulb) 25.2 



Monthly range 66.0 



Highest mean daily 49.0, 30th 



Lowest mean daily lo.o 17th 



Mean maximum 36.7 



Mean minimum 16.9 



Mean daily range 19.8 



Greatest daily range 43.5, 26th 



Least daily range 8.0, 9th 



Humidity. 



Mean dew point 22.4 



Mean force of vapor 156 



Mean relative humidity 86.8 



Precipitation. In inches. 



Total precipitation 3.97 



Number of days on which .01 inch or more 



rain fell 12 



Total snow in inches .... 22 



* Temperature in ground shelter. 



t Reduced to freezing and sea-level. 



Wind. 



Total movement 5556m 



Greatest daily movement 461m, i6th 



Least daily movement i8m, 27th 



Mean daily movement 147 m 



Mean hourly velocity 6.1 m 



Maximum pressure per square foot, lo.o lbs = 



45 m per hour, 9th, 12 M, \V. 

 Maximum velocity for 5 minutes, 30m per 



hour, 9th, i,p, W. 

 Prevailing direction. West. 

 Summary. 



North Northwest 13 per cent 



North 13 " " 



West 19 " " 



Northeast 10 " " 



.South Southwest 10 " " 



West Northwest 16 " " 



Other directions iQ " " 



Weather. 



Mean cloudiness observed .... 43 per cent 

 Total cloudiness recorded by the Sun 



Thermometer . . 154 hours = 42 per cent 



Number of clear days 15 



Number of fair days 8 



Number of cloudy days 8 



Bright Sunshine. 



Number hours recorded, 217 hrs, = 58 per cent 



Rain. 5th, 6th, 7th. 



Snow. 2d. sth, 6th, 7th, 8th, gth, loth, 13th' 



14th, 15th, 19th, 2ISt, 22d. 



Days of Sleighing, 29. 



Gales. 35 or more miles per hour: 39m, ist, 



N.N.W.; 40m, 4th, W.N.W.: 38m, 5th, 



W.N.W.; 45m, 9th, W.; 35m, 10th, S.S.W.; 



35m, 13th, W.N.W.; 3Sm, i6th, N.W.; 37m, 



23d, W. 



