статья в журнале

En

Physical Oceanography

ISSN:1573160
eSSN:1573-160X

2022

10.22449/1573-160X-2022-4-321-333

Purpose. The study is purposed at identifying both the features of seasonal and interannual variability of the aerosol wet deposition velocity and the factors that determine this variability on the time scales under study. Methods and Results. The deposition velocity in 2012–2020 was estimated using the field data on temporal variability of the7Be concentration on atmospheric aerosols and the7Be “wet” deposition fluxes. The correlation analysis permitted to assess quantitatively the influence of the precipitation amount and frequency upon the seasonal and interannual variability of the deposition velocity. The multiple regression analysis was applied for constructing the regression models. Conclusions. The deposition velocity varies from 0.21 to 1.40 cm·s–1 and averages 0.62 ± 0.29 cm s–1. It has been established that its seasonal variability is conditioned by the amount and frequency of precipitation, whereas its interannual variability – only by the precipitation amount. Based on the obtained results, two regression models were been proposed. The first model describes seasonal variability of the deposition velocity, while the second one – the interannual variability of this parameter. The corresponding time series of precipitation variability data are used in both models as predictors. The validation results indicate that the errors in the obtained estimates constitute 21.1 and 12.9% for the seasonal and annual values of wet deposition velocity, respectively

atmospheric aerosol, Beryllium-7 (7Be), precipitation, wet deposition flux, wet deposition velocity

2022-10-17 15:23:52