Great Basin Naturalist


Two FORTRAN IV computer programs were developed to facilitate reduction of meteorologic data from irrigated and nonirrigated plots at Provo, Utah. The first program compiles and tabulates daily, monthly, and yearly summaries of precipitation as rain and/or snow, snowfall, total snow cover, soil moisture, dew, relative humidity, potential evaporation, cloud cover, and wind. Temperature values are tabulated for measurements taken in a standard weather shelter. 5 cm beneath soil surface under grass cover, at soil surface under grass cover, and on bare ground.

The second program enables complete computerized (Calcomp) construction, labeling, and graphing of 10 different meteorologic measurements and 3 calculated comparisons of temperature means.

Advantages of the first computer program relate generally to that obviously noticeable with any computerized tabulation. Those of the second program relate more specifically to the greatly reduced cost of computerized graphs compared with those produced manually, as well as to the marked reduction of errors compared with the number frequently associated with the usual tedious and laborious plotting of voluminous weather data.

Meteorologic data collected for the year demonstrated the beneficial effect of irrigation in the creation of microenvironments for living organisms.