Remote Sensing Strategy for the Study of Algal Monitoring

The monitoring and detection of algal community in water bodies is a worldwide concern today due to its toxic properties and rapid expansion problems which lead to eutrophication. Remote sensing when compared to in situ analysis is found better for its synoptic vision, large-scale observation, and factual time monitoring. The present review gives the utility and characteristics of satellite data and sensors used for monitoring purposes of algal community and different algorithms and techniques applied in it. The review is based on earlier studies on remote sensing of algal communities, and the study shows the limitation, disadvantages, and important issues in remote sensing advancement and approach for monitoring needs. The article also incorporated the methodologies used in remote sensing to determine its role. The study shows that MERIS (Medium Resolution Imaging Spectrometer) is more accurate in comparison to other satellite sensors for observing characteristics of algal communities. The reflectance and absorption properties of chlorophyll concentration in the pigments of algae are used during most of the remote sensing studies. It is the paramount and widespread method used worldwide.