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This research presents a comprehensive analysis of chlorophyll activity and water quality across different Landsat missions (Landsat 5, 7, 8, and 9) spanning multiple decades. Employing indices like the Normalized Difference Chlorophyll Index (NDCI), the Red Edge Chlorophyll Index (RECI), and the Water Quality Index (WQI), trends and patterns were discerned to understand the temporal changes in aquatic ecosystems. Peaks in chlorophyll activity and water quality were prominently observed in mid-2007 (Landsat 5 & 7) and mid-2014, with late 2016 also showing positive signs (Landsat 8). In contrast, notable dips were identified in October 2011 (Landsat 5) and October 2019 (Landsat 8), signaling potential environmental disturbances or anomalies. The continuity of data across Landsat missions offers a unique advantage, providing an uninterrupted view of the health of aquatic systems. Key recommendations arising from the study include the necessity to delve deeper into periods of anomalies, continuous monitoring with the latest Landsat missions, and the integration of other environmental datasets for holistic insights. This paper underscores the importance and potential of satellite remote sensing in monitoring and predicting environmental changes in aquatic ecosystems.

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Monitoring Chlorophyll-a Concentrations in Lake Laja Using Landsat Data and Google Earth Engine

  • 会议论文

  • 发表日期：

    2026年

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  • Lien Rodríguez-López,
  • Mirza Muhammad Muzzamil,
  • Lisandra Bravo,
  • Iongel Durán-Llacer,
  • Rebeca Martínez-Retureta,
  • Roberto Urrutia

摘要

This research presents a comprehensive analysis of chlorophyll activity and water quality across different Landsat missions (Landsat 5, 7, 8, and 9) spanning multiple decades. Employing indices like the Normalized Difference Chlorophyll Index (NDCI), the Red Edge Chlorophyll Index (RECI), and the Water Quality Index (WQI), trends and patterns were discerned to understand the temporal changes in aquatic ecosystems. Peaks in chlorophyll activity and water quality were prominently observed in mid-2007 (Landsat 5 & 7) and mid-2014, with late 2016 also showing positive signs (Landsat 8). In contrast, notable dips were identified in October 2011 (Landsat 5) and October 2019 (Landsat 8), signaling potential environmental disturbances or anomalies. The continuity of data across Landsat missions offers a unique advantage, providing an uninterrupted view of the health of aquatic systems. Key recommendations arising from the study include the necessity to delve deeper into periods of anomalies, continuous monitoring with the latest Landsat missions, and the integration of other environmental datasets for holistic insights. This paper underscores the importance and potential of satellite remote sensing in monitoring and predicting environmental changes in aquatic ecosystems.