Consideration of high surface concentrations of hydrochloric acid vapors in ground-based spectroscopic measurements
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Spectral measurements show that solar radiation can contain information on extremely high surface concentrations of hydrochloric acid vapors, which leads to the impossibility of estimation of their total content using the background a priori information. An alternative specification of a priori information is suggested, which allows an increase in the number of retrieved values of hydrochloric acid vapor by 10%. The existence of high surface concentrations of the gas is confirmed by the spectral data processing results. A good agreement between estimates of the stratospheric content of hydrochloric acid vapors retrieved from ground-based measurements using the proposed a priori information and independent satellite data is shown: mean differences between data received by the two methods are 4.4%, standard deviation of the differences is 5.7%, and the correlation coefficient is 0.85.
Keywordsground-based spectroscopic measurements gas total content hydrochloric acid vapors in the atmosphere near-surface pollution of the atmosphere
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