Article
Article name INVENTORY METHOD OF AEROSOL INFLUENCE DURING SOLAR-PHOTOMETRIC MEASUREMENTS OF ATMOSPHERIC GASES
Authors Abaszade F.. postgraduate, fabaszadeh@swt.az
Bibliographic description
Category Earth science
DOI 551.510;551.593
DOI 10.21209/2227-9245-2020-26-4-6-12
Article type
Annotation The need to monitor and predict the future course of ongoing climate measurements dictates the need for large-scale measurements of the concentration of such gases. However, the accuracy of spectral measurements of greenhouse gases is often limited by the influence of atmospheric aerosol, which has a continuous spectral absorption. The relevance of research on atmospheric aerosol is also explained by the significant weakening of solar radiation by the aerosol layer of the atmosphere. It is well known that atmospheric aerosol absorbs or reflects back into space about 20 % of all solar optical radiation. As the most important component of the atmosphere, the aerosol as a physical object of research has a number of important indicators that are controlled by several international and local measurement networks. The subject of research in this paper is the well-known methods used to determine these indicators. The purpose of the research is to improve the method of accounting for the influence of aerosol when performing spectral measurements of the concentration of greenhouse gases in the atmosphere. The issue of accounting for the effect of aerosol in solar-photometric measurements of atmospheric gases is considered. It is shown that the problem of increasing the accuracy of solar-photometric measurements of atmospheric gases at the wavelength λ0 can be reduced to the problem of calculating and accounting for the optical thickness of the aerosol at the wavelength λ0 by compiling a scalar estimate in the form of k1τ(λ0-Δλ1)+k2τ(λ0-Δλ2), where k1+k2 = 0. In this case, the power factor in the known Angstrom formula required to determine the optical thickness of the aerosol at the wavelength λ0 can be determined iteratively, according to the proposed iterative method. To determine the value of the atmospheric turbidity coefficient β, it is sufficient to perform photometric measurements at the wavelengths λ0-Δλ1 and λ0+Δλ2 and determine the values of β using the Angstrom formula using the known values τ and α
Key words aerosol; optical thickness; solar photometer; atmospheric turbidity; wavelength; measurements; remote sensing; climate change; error; Angstrom indicator
Article information Abaszade F. Inventory method of aerosol influence during solar-photometric measurements of atmospheric gases // Transbaikal State University Journal, 2020, vol. 26, no. 4, pp. 6–12. DOI: 10.21209/2227-9245-2020-26-4-6-12.
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Full articleINVENTORY METHOD OF AEROSOL INFLUENCE DURING SOLAR-PHOTOMETRIC MEASUREMENTS OF ATMOSPHERIC GASES