Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Assessing Hydrological Changes in Wetland Areas of the Arctic and Subarctic Based on Microwave Remote Sensing Data

Version 1 : Received: 30 November 2021 / Approved: 1 December 2021 / Online: 1 December 2021 (10:32:31 CET)

How to cite: Romanov, A.N.; Khvostov, I.V.; Tikhonov, V.V.; Sharkov, E.A. Assessing Hydrological Changes in Wetland Areas of the Arctic and Subarctic Based on Microwave Remote Sensing Data. Preprints 2021, 2021120004 (doi: 10.20944/preprints202112.0004.v1). Romanov, A.N.; Khvostov, I.V.; Tikhonov, V.V.; Sharkov, E.A. Assessing Hydrological Changes in Wetland Areas of the Arctic and Subarctic Based on Microwave Remote Sensing Data. Preprints 2021, 2021120004 (doi: 10.20944/preprints202112.0004.v1).

Abstract

Specific emissivity features of swamps and wetlands of Western Siberia were studied for changing seasonal conditions with the use of daily data of satellite microwave sounding. The research technique involved the analysis of brightness temperatures of the underlying surface at the test sites. Variations in seasonal dynamics of brightness temperatures were mainly caused by different rates of seasonal freezing of the upper waterlogged layer of the underlying surface and dielectric characteristics of water containing natural media (water body, soil, vegetation). We analyzed long-term trends in seasonal and annual dynamics of brightness temperatures of the underlying surface and estimated hydrological changes in the Arctic and Subarctic. The findings open up new possibilities for using satellite data in the microwave range for studying natural seasonal dynamic processes and predicting hazardous hydrological phenomena.

Keywords

hydrological changes; wetlands; Arctic; Subarctic; microwave remote sensing

Subject

EARTH SCIENCES, Environmental Sciences

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