Abstract: Objective methods in which climatology is considered are needed in the design of flight instruction programs. Weather conditions less than the minimum (LM) thresholds designated for Minimum Instructional Visual Flight Rules ...

Abstract: The average seasonal march and frequency of soil moisture in the corn root zone at Ames, Iowa, during a 30-yr period was estimated for a well-drained 5-ft soil profile holding 9 inches of available water at field capacity. ...

Abstract: Reliable crop-weather-technology models are needed for yield prediction and for the determination of climatic risks in crop production. Accurate and timely information on crop yields would help both industry and government ...

Abstract: Historical changes in time of once daily maximum and minimum temperature observations at cooperative climatological stations from 1905 to 1975 have introduced a systematic bias in mean temperatures. Unless corrected, this ...

Abstract: Weather conditions significantly affect corn yields. while weather remains as the major uncontrolled variable in crop production, an understanding of the influence of weather on yields can aid in early and accurate assessment ...