ДВУХСТУПЕНЧАТЫЙ ЧЕТЫРЕХВОЛНОВЫЙ МЕТОД ИЗМЕРЕНИЯ ДВУХ ГАЗОВЫХ СОСТАВЛЯЮЩИХ АТМОСФЕРЫ С ПОМОЩЬЮ СОЛНЕЧНОГО ФОТОМЕТРА С ДВУХПАРАМЕТРИЧЕСКОЙ АЭРОЗОЛЬНОЙ КОРРЕКЦИЕЙ

Abstract

The latest achievements in development of multiwavelength photometry in direction of increase of number of channels and spectral resolution are hyper-spectrometers and differential optical absorption spectrometers. In these devices the mechanism of formation of multi number wave channels is almost identical and neutralization of aerosol effect is carried out using such methods as averaging, integration etc. don’t accounting differences in wavelength dependence of optical depth of aerosol fractions. It is noted that in high precision sun photometry the high accuracy separate accounting of each aerosol fraction is necessary. The reason for that is at least following factors: multifractionality of atmospheric aerosol, taking into account that wavelength dependences of these fractions differ each-other. The factual differences between sources of aerosol that is the generated by them aerosol has different physical-chemical properties. In the paper two-stages four wavelengths method with two parametric correction is suggested where number of measured gases is increased twofold. Despite its two stage construction the suggested method doesn’t require twofold increase of volume of operations carried out in known three wavelength method with double parametric corrections. The matter of novelty is that in suggested method the measurements are carried out at specially selected four wavelengths upon which increase of number of wavelengths by one-third leads to twofold increase of number of measured gases. As a result of carried out experimental-model researches of four wavelengths two stage method following estimates of total amount of water vapors (W) and ozone (X) are derived: W = 2 cm and X = 0,3 cm. Such an estimates well accord with known data on Azerbaijan in line with mean values of W and X are 2-3 cm and 0,3-0,33 cm.