standard meteorological measurements--humidity--shortwave radiation--net and thermal radiation estimation and measurement--leaf radiative properties and the leaf energy budget--soli temperature--soil heat flux--frost depth--determination of leaf area index in agricultural systems--estimating surface wetness on plants-sampling for PM2.5 particulates--measurement of soil respiration in situ: chamber techniques--measring carbon dioxide en the atmosphere--trace gas concentration measurements for micrometeorological flux quantification--ammonia: measurement Issues--current micrometeorological flux methodologies with applications in agriculture--bowen ratio enegy balance method--aerodynamicmethods for estimating turbulent fluxes--relaxed eddy accumulaion--surface renewal estimates of scalar exchange--inverse lagrangian analysis of heat, vapor and gas exchange in plant canopies--estimating tracer emissions with a backward lagrangian stochastic technique--useful equations in micrometeorology