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Winds of Change: A Century of Agroclimate Research

^a USDA-ARS, Grazinglands Research Lab., 7207 West Cheyenne St., El Reno, OK 73036
^b USDA-ARS, National Soil Tilth Lab., 2110 University Blvd., Ames, IA 50011. Contribution of the U.S. Department of Agriculture, Agricultural Research Service. Use of product name is for information purposes only and does not imply an endorsement by the authors or USDA

View larger version (16K): [in this window] [in a new window]   Fig. 1. Generalized temporal and spatial scaling of agricultural meteorology, agroclimatology, climatology, and climate change.

View larger version (18K): [in this window] [in a new window]   Fig. 2. Energy balance of well-watered and water-stressed winter wheat under (A) high and (B) moderate evaporative demand at Bushland Texas. Evaporation (LE) was measured by weighing lysimeters, Rn by net radiometer, G by heat flux plates corrected for heat storage above the plates, and sensible heat (H) by solution of Eq. [1]. Last rainfall of 12.2 mm (29.9 MJ m–2 equivalent) was May 2. Data source: Collaborative research of J.L. Steiner, T.A. Howell, A.D. Schneider, S.R. Evett, and J.A. Tolk, USDA-ARS, Bushland, TX.