METEOROLOGY CLIMATOLOGY. 



1019 



the subject of investigations for a number of years and records have 

 been maintained of its ilow, it has been desired to study the amount 

 and distribution of the precipitation on its watershed." 



The characteristics of the Colorado climate are briefly discussed as 

 follows : 



"The great variation in altitude in the State, ranging from less than 4,000 ft. at 

 the eastern horder to over 14,000 ft. at the summit of numerous peaks, causes a 

 change in climate greater than between New Orleans and Winnipeg, and while Colo- 

 rado east of the mountains has a mean temperature the same as New York, the tem- 

 perature of the high peaks is lower than that of Spitzhergen. . . . Still, cultivated 

 and irrigated Colorado is of relatively small range in elevation . . . 



"Among the general characteristics of Colorado are : The small rainfall — from one- 

 half to one-third of that east of the Mississippi . . . ; greater range of tempera- 

 ture ; a large percentage of sunshine, of great intensity, which, as well as the great 

 range, is a consequence of the great dryness and rarity of the air. 



"One of the marked features is the presence of warm westerly winds known as 

 Chinooks, a type present in mountainous countries under various names. While 

 cold waves are not absent, the intensity is less than in the Mississippi Valley States. 

 The conditions which result in blizzards of great intensity in these States cause 

 westerly winds with us and some of the most pleasant weather of winter." 



Meteorological summary for Ohio, 1897, C. A. Patton (Ohio 

 Sta. Bui. 95, pp. 327-342). — Notes on the weather and tabulated daily 

 and monthly summaries of observations at the station on temperature, 

 precipitation, cloudiness, direction of the wind, etc., are given; and 

 for comparison similar data for previous years and for other parts of 

 the State. The following is a summary of results: 



Summary of meteorological obsei'vations in Ohio. 



Evaporation, L. G. Carpenter et al. ( Colorado Sta. Bui. 49, pp. 

 64-66, fig. 1). — A record is given of continued observations on a stand- 

 ard evaporation tank. 



"Observations with the hook gage are made twice per day from April to Septem- 

 ber, gage reading to T n\ TT r of a foot. At the same time the temperature of the water 

 surface is observed twice per day at the maximum and minimum temperatures. 

 During September and October the reading is made once daily. During the winter 

 months ice forms, and the observation is made at the beginning of each month. 



