Remote sensing observations of ocean colour using the traditional Forel-Ule scale
نویسندگان
چکیده
منابع مشابه
Spectral analysis of the Forel-Ule ocean colour comparator scale
François Alphonse Forel (1890) and Willi Ule (1892) composed a colour comparator scale, with tints varying from indigo-blue to cola brown, to quantify the colour of natural waters, like seas, lakes and rivers. For each measurement, the observer compares the colour of the water above a submersed white disc (Secchi disc) with a hand-held scale of pre-defined colours. The scale can be well reprodu...
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Societal awareness of changes in the environment and climate has grown rapidly, and there is a need to engage citizens in gathering relevant scientific information to monitor environmental changes due to recognition that citizens are a potential source of critical information. The apparent colour of natural waters is one aspect of our aquatic environment that is easy to detect and an essential ...
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Satellite ocean colour missions require a standard extraterrestrial solar irradiance spectrum in the visible and near-infrared (NIR) for use in the process of radiometric calibration, atmospheric correction and normalization of water-leaving radiances from in-situ measurements. There are numerous solar irradiance spectra (or models) currently in use within the ocean colour community and related...
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ژورنال
عنوان ژورنال: Estuarine, Coastal and Shelf Science
سال: 2018
ISSN: 0272-7714
DOI: 10.1016/j.ecss.2018.10.002