Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR
Playlist
  • Sentinel
  • LIF
  • LiDAR
  • chlorophyll
  • TSS
  • bio-optical models
  • ocean color
  • Issyk-Kul Lake
Chapter
00:10
Introduction
01:35
Field Measurements
03:53
Results
05:05
Conclusions
Video Introduction

This video is adapted from 10.3390/rs15184443

The development of regional satellite bio-optical models for natural waters with high temporal and spatial variability, such as inland seas, reservoirs, and coastal ocean waters, requires the implementation of an intermediate measuring link in the chain, “water sampling—bio-optical models”, and this link must have certain intermediate characteristics. The most crucial of them are the high-precision measurements of the main water quality parameters, such as the concentration of chlorophyll a (Chl a), colored dissolved organic matter (CDOM), and total suspended sediments (TSS) in the upper water layer, together with a high operational rate and the ability to cover a large water area in a short time, which corresponds to a satellite overpass. A possible solution is to utilize laser-induced fluorescence (LIF) of water constituents measured by a marine LiDAR in situ with a high sampling rate from a high-speed vessel. This allows obtaining a large ground-truth dataset of the main water quality parameters simultaneously with the satellite overpass within the time interval determined by NASA protocols. This method was successfully applied to the oligotrophic Issyk-Kul Lake in Kyrgyzstan, where researchers obtained more than 4000 and 1000 matchups for the Chl a and TSS, respectively. New preliminary regional bio-optical models were developed on the basis of a one-day survey and tested for archive Sentinel-2A data for 2022. This approach can be applied for regular monitoring and further correction in accordance with seasonal variability. The obtained results, together with previously published similar studies for eutrophic coastal and productive inland waters, emphasize the applicability of the presented method for the development or adjustment of regional bio-optical models for water bodies of a wide trophic range.

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Pelevin, V.; Koltsova, E.; Molkov, A.; Fedorov, S.; Alymkulov, S.; Konovalov, B.; Alymkulova, M.; Jumaliev, K. Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR. Encyclopedia. Available online: https://encyclopedia.pub/video/video_detail/1308 (accessed on 07 December 2024).
Pelevin V, Koltsova E, Molkov A, Fedorov S, Alymkulov S, Konovalov B, et al. Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR. Encyclopedia. Available at: https://encyclopedia.pub/video/video_detail/1308. Accessed December 07, 2024.
Pelevin, Vadim, Ekaterina Koltsova, Aleksandr Molkov, Sergei Fedorov, Salmor Alymkulov, Boris Konovalov, Mairam Alymkulova, Kubanychbek Jumaliev. "Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR" Encyclopedia, https://encyclopedia.pub/video/video_detail/1308 (accessed December 07, 2024).
Pelevin, V., Koltsova, E., Molkov, A., Fedorov, S., Alymkulov, S., Konovalov, B., Alymkulova, M., & Jumaliev, K. (2024, July 05). Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR. In Encyclopedia. https://encyclopedia.pub/video/video_detail/1308
Pelevin, Vadim, et al. "Regional Bio-Optical Models for Sentinel-2/MSI Imagery of Issyk-Kul Lake Using LIF LiDAR." Encyclopedia. Web. 05 July, 2024.
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