Spatio-Temporal Variability of the Aerosol Optical Depth over the Gorky and Cheboksary Reservoirs in 2022

Spatio-Temporal Variability of the Aerosol Optical Depth over the Gorky and Cheboksary Reservoirs in 2022–2023

Published:2023-11-22 Issue:23 Volume:15 Page:5455
ISSN:2072-4292
Container-title:Remote Sensing
language:en
Short-container-title:Remote Sensing

Author:

Kalinskaya Darya¹²^ORCID,Molkov Aleksandr¹³^ORCID

Affiliation:

1. Radiophysical Department, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny Novgorod 603022, Russia

2. Marine Hydrophysical Institute of the Russian Academy of Sciences, 2 Kapitanskaya St., Sevastopol 299011, Russia

3. Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov St., Nizhny Novgorod 603950, Russia

Abstract

The present study aimed to investigate atmospheric optical characteristics over the Gorky and Cheboksary Reservoirs and their multi-scale temporal variations to obtain the background characteristics and to identify events involving the transfer of absorbing aerosol to the studied region in 2022–2023. The region is located at a considerable distance (500 km) from the nearest AERONET station; therefore, previous atmospheric data were not available. As a solution, the in situ self-measured aerosol optical depth (AOD) and Angström exponent, as well as satellite products (MAIAC and CALIPSO) for MODIS data, were used. This allowed us to set background values of an AOD of 0.11 at a wavelength of 500 nm and an Angström exponent of 1.2, against their maximum values of 0.38 and 2.5, respectively. To explain these variations, the registered conditions and the microstructure of the dust aerosol over the studied region are presented. For days with background values, the analysis of the particle size distribution data did not show a predominance of any particle size. The optical properties of a smoke aerosol in an atmospheric column are described, and an analysis of the dynamics of particle size variability is presented. A comparative analysis of the optical characteristics of atmospheric aerosol over the Gorky and Cheboksary Reservoirs using in situ and MODIS products was carried out.

Funder

Federal Academic Leadership Program “Priority-2030” of Lobachevsky State University of Nizhny Novgorod

Russian Science Foundation

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Link

https://www.mdpi.com/2072-4292/15/23/5455/pdf

Reference23 articles.

1. Results of coal research in order to reduce emissions of pollutants. Bulletin of Osh State University;Mamatalieva;Chemistry. Biology. Geogr.,2023

2. Kaplan, A.L. (2010). Natural, Technogenic Environmental Safety at Industrial and Household Facilitiesc, TSU.

3. Koposov, E.V., Paleev, A.V., Sobol, S.V., Vinogradova, T.P., Kashchenko, O.V., Kataeva, I.V., and Vinogradov, M.A. (2008). Environmentally Safe, Sustainable Development of the Volga Basin: Aspects of International Scientific Cooperation, NNGASU.

4. Aeronet—A Federated Instrument Network and Data Archive for Aerosol Characterization;Holben;Remote Sens. Environ.,1998

5. Investigation of optical characteristics over the Gorky reservoir in the summer seasons of 2016 and 2017;Kalinskaya;Mod. Probl. Remote Sens. Earth Space,2019