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This book takes a fresh, holistic approach to the problems of light absorption and absorbers in seawaters, discussing the fundamentals of light absorption at various depths in seawaters of different trophicity by absorbers of diverse origin. The authors have drawn their information from a substantial body of contemporary research results published in the subject literature (over 700 references) as well as their own work during the last 30 years. No other book presently available examines the issues of light absorption and absorbers in seawaters in such a manner. The book is intended primarily for students, engineers and scientists professionally involved with the marine environment; nevertheless, the authors hope that it will also find favor among all who take an interest in the nature of our Earth, especially the seas and oceans. The components most strongly differentiating the various types of sea/ocean waters from the optical point of view – the water itself, the organic and inorganic substances dissolved in it, and the manifold particles suspended in it – receive comprehensive treatment. The spectral absorption of light by pure water in its various states of matter and by atoms and ions of sea salt is also given ample coverage. The interaction of light with various kinds of organic molecules is analyzed in detail, as are the light absorption spectra of the principal groups of these substances present in the sea in dissolved form. The physical and chemical properties, as well as the optical constants, of organic and inorganic suspended particulate matter (SPM), are discussed in the context of their relationship to the light absorption properties of SPM. Special emphasis is placed on the role of the phytoplankton and the pigments it contains which are particularly strong and important absorbers of visible light in the sea. The authors are professors of physics with practical experience in the field of marine research going back 35 (BW) and 45 (JD) years. They are also the authors of a large number of research papers and several books, e.g., J. Dera, Marine Physics (Elsevier (The Netherlands) and PWN (Poland)), W. Smekot-Wensierski, B. Wozniak et al. Absorptionseigenschaften des marinen Phytoplanktons [Absorption properties of marine phytoplankton] (GKSS-Forschungszentrum Geesthacht GmbH, Germany).

Seawater --- Light absorption. --- Underwater light. --- Optical properties. --- Submarine light --- Underwater illumination --- Light --- Absorption of light --- Optical absorption --- Absorption --- Opacity (Optics) --- Optical oceanography

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Beginning systematically with the fundamentals, the fully-updated third edition of this popular graduate textbook provides an understanding of all the essential elements of marine optics. It explains the key role of light as a major factor in determining the operation and biological composition of aquatic ecosystems, and its scope ranges from the physics of light transmission within water, through the biochemistry and physiology of aquatic photosynthesis, to the ecological relationships that depend on the underwater light climate. This book also provides a valuable introduction to the remote sensing of the ocean from space, which is now recognized to be of great environmental significance due to its direct relevance to global warming. An important resource for graduate courses on marine optics, aquatic photosynthesis, or ocean remote sensing; and for aquatic scientists, both oceanographers and limnologists.

Photosynthesis. --- Plants --- Aquatic plants --- Underwater light. --- Submarine light --- Underwater illumination --- Light --- Aquatic flora --- Aquatic vegetation --- Hydrophytes --- Water plants --- Waterplants --- Aquatic organisms --- Water gardens --- Plants, Effect of underwater light on --- Underwater light --- Photobiology --- Gases from plants --- Effect of underwater light on. --- Ecophysiology. --- Effect of light on --- Physiological effect --- Photorespiration