ARS	Agricultural Research Service
CMOS	Complementary metal–oxide–semiconductor
CNN	Convolutional neural network
CONUS	Continental United States
CSRL	Cropping Systems Research Laboratory
DFNN	Deep fully connected neural network
EDA	Exploratory data analysis
${\mathrm{ET}}_c$	Crop evapotranspiration
EXGI	Excess green index
LST	Land surface temperature
LSTM	Long short-term memory
MAE	Mean absolute error
MAPE	Mean absolute percentage error
MDPI	Multidisciplinary Digital Publishing Institute
ML	Machine learning
MLP	Multi-Layer Perceptron
MODIS	Moderate Resolution Imaging Spectroradiometer
MP	Megapixels
NDVI	Normalized difference vegetation index
RFR	Random forest regression
RGB	Red, green, and blue
ResNet	Residual network
RMSE	Root-mean-square error
RNN	Recurrent neural network
SGD	Stochastic gradient descent
SR	Surface reflectance
SVR	Support vector regression
THP	Texas High Plains
UAV	Unmanned Aerial Vehicle
US	United States
USDA	United States Department of Agriculture