Accuracy of spectral UV model calculations: 1. Consideration of uncertainties in input parameters

摘要: Even in idealized, clear sky conditions, spectral UV models need well-specified input parameters such as solar zenith angle, pressure, ozone and aerosol optical depth to produce realistic results. based on exact analytical methods are widely considered be absolutely accurate with errors results attributed inaccurate parameters. The uncertainties the standard determinations of each parameter were determined for following specifying parameter: (1) from satellites or ground-based Dobson spectrometer measurements; (2) sunphotometer (3) single-scattering albedo; three different procedures using measurements radiative transfer calculations studied; (4) ground determination albedo is achieved satellite measurements, which have a resolution some 100 km; may give information about ground, but needed weighted average surrounding albedos. resulting inaccuracies simulated discrete ordinate method model by Stamnes et al. [1988] specified above simulations carried out at 0°, 50°, 80° angle analyzed 305 380 nm. overall maximum error combining errors.