Accurate atmospheric transmittance model for O<SUB>2</SUB> absorption band near 762 nm

Ad-a013 719 Band Model Calculation of Atmospheric Transmittance for Hot Gas Line Emission Sources. Account of Doppler Broadening

Finite Element Model for Atmospheric IR-Absorption

The updating concerns mainly the sensitivity analysis. The model is not anymore monochromatic, the system matrix K is now calculated separately for the two contributions water vapor and CO2 : K=KH2O+KCO2. The contribution of 0.04 % CO2 is small as compared to the contribution of 3.5 % water vapor: for the global and annual mean evacuation the contributions of CO2 and water vapor could be dealt ...

Collision-induced absorption by N2 near 2.16μm: Calculations, model, and consequences for atmospheric remote sensing

Classicalmoleculardynamics simulations (CMDS) areused for calculationsof thecollision-induced absorption (CIA)bypureN2 in the (2.1–2.2μm)regionof thefirst overtoneband.They lead to reasonable (±15%) agreement with the only two laboratory measurements available, at 97 K and room temperature. Based on theseexperiment/theorycomparisons, empirical correctionsaremadeto theCMDS-calculatedCIAofpureN2 ...

Absorption near band edges in heavily doped GaAs.

The optical-absorption coefficient o.(m) in heavily doped nand p-type GaAs is evaluated for comparison with the observed values of Casey et al. The purpose is to test the theory of electrons in heavily disordered systems derived by Sa-yakanit and the absorption matrix element (ME) which follows from this theory. The present calculation of a(m) begins with the density of electron states (DOS) an...

Corn Density Measurement by Near-infrared Transmittance

A corn density calibration was developed for a near-infrared transmittance instrument (Infratec 1225). The calibration sample set included 96 corn samples grown in various locations of the United States. Samples were selected by principal component analysis (PCA) from a larger set of 410 samples, representing the 1986 through 1992 crop years. Samples for instrument and temperature stabilization...