Use of Satellite Data in Soil Moisture and Crop Yield Models

摘要

An evapotranspiration-yield model for winter wheat was used to assess the impact of using GOES derived solar radiation estimates on plant growth models. Evapotranspiration (ET) rates were predicted using observed solar radiation estimates and those predicted from GOES using Tarpley's model and KSU's model. The seasonal ET rates were overestimated by 8.3% and 4.5% with Tarpley's and KSU's models, respectively. The yield model predicted grain yields that were similar regardless of the model used in estimating solar radiation. Therefore, it appears that either of these two models (Tarpley's or KSU's) are appropriate for estimating daily solar radiation in a crop growth model such as KSU wheat model.