文章基本信息

标题：Validating chlorophyll- a concentrations in the Lagos Lagoon using remote sensing extraction and laboratory fluorometric methods
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作者：A.O. Ayeni ; T.A. Adesalu
期刊名称：MethodsX
印刷版ISSN：2215-0161
电子版ISSN：2215-0161
出版年度：2018
卷号：5
页码：1204-1212
DOI：10.1016/j.mex.2018.09.014
语种：English
出版社：Elsevier
摘要：Graphical abstractDisplay OmittedAbstractRemote sensing data is a viable alternative for mapping pigment concentrations in water body, and consequently, the trophic. Chlorophyll-a (Chl-a) is present in all phytoplankton species. This study therefore uses laboratory fluorometric and remote sensing extraction methods for assessing chlorophyll-aconcentration in the Lagos Lagoon. The ﬂuorometer was calibrated with a commercially available chlorophyll-astandard before used in the laboratory to estimates chlorophyll-aconcentration. Landsat 7 (ETM+) and Landsat 8 (OLI) were acquired for the remote sensing method. The Landsat data were first geometrically rectified. Then brightness values were converted to reflectance through the radiometric correction process. For the regression models, logarithmically transformed chlorophyll-awas used as the dependent variable. Single bands, band ratios and logarithmically transformed band ratios were the independent variables. R2 values were computed and evaluated.•Chlorophyll-a contributes to productive water bodies•laboratory fluorometric and remote sensing extraction methods•Landsat data acquired for the remote sensing method
关键词：Methods;Chlorophyll-a;Bio-optical models;Remote sensing;Satellite imagery