SmartFluo: A Method and Affordable Adapter to Measure Chlorophyll a Fluorescence with Smartphones von Friedrichs, Anna, Busch, Julia Anke, van der Woerd, Hendrik Jan, Zielinski, Oliver

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An Evaluation of Citizen Science Smartphone Apps for Inland Water Quality Assessment von Malthus, Tim J., Ohmsen, Renee, Woerd, Hendrik J. van der

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Hue-Angle Product for Low to Medium Spatial Resolution Optical Satellite Sensors von Van der Woerd, Hendrik, Wernand, Marcel

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True colour classification of natural waters with medium-spectral resolution satellites: SeaWiFS, MODIS, MERIS and OLCI von Woerd, Hendrik J van der, Wernand, Marcel R

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Vibrational modes of water predict spectral niches for photosynthesis in lakes and oceans von Holtrop, Tadzio, Huisman, Jef, Stomp, Maayke, Biersteker, Levi, Aerts, Jeroen, Grébert, Théophile, Partensky, Frédéric, Garczarek, Laurence, Woerd, Hendrik Jan van der

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Trends in ocean colour and chlorophyll concentration from 1889 to 2000, worldwide von Wernand, Marcel R, van der Woerd, Hendrik J, Gieskes, Winfried W C

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Global maps of Forel–Ule index, hue angle and Secchi disk depth derived from 21 years of monthly ESA Ocean Colour Climate Change Initiative data von Pitarch, Jaime, Bellacicco, Marco, Marullo, Salvatore, van der Woerd, Hendrik J

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Citclops: A next-generation sensor system for the monitoring of natural waters and a citizens' observatory for the assessment of ecosystems' status von Ceccaroni, Luigi, Piera, Jaume, Wernand, Marcel R, Zielinski, Oliver, Busch, Julia A, Van Der Woerd, Hendrik Jan, Bardaji, Raul, Friedrichs, Anna, Novoa, Stéfani, Thijsse, Peter, Velickovski, Filip, Blaas, Meinte, Dubsky, Karin

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Citizen Bio-Optical Observations from Coast- and Ocean and Their Compatibility with Ocean Colour Satellite Measurements von Busch, Julia A, Bardaji, Raul, Ceccaroni, Luigi, Friedrichs, Anna, Piera, Jaume, Simon, Carine, Thijsse, Peter, Wernand, Marcel, Vander Woerd, Hendrik J, Zielinski, Oliver

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Optical properties of Forel-Ule water types deduced from 15 years of global satellite ocean color observations von Pitarch, Jaime, van der Woerd, Hendrik J., Brewin, Robert J.W., Zielinski, Oliver

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Colour Classification of 1486 Lakes across a Wide Range of Optical Water Types von Lehmann, Moritz K., Nguyen, Uyen, Allan, Mathew, Van der Woerd, Hendrik Jan

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HYDROPT: An Open-Source Framework for Fast Inverse Modelling of Multi- and Hyperspectral Observations from Oceans, Coastal and Inland Waters von Holtrop, Tadzio, Van Der Woerd, Hendrik Jan

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Modeling Remote-Sensing Reflectance and Retrieving Chlorophyll-a Concentration in Extremely Turbid Case-2 Waters (Lake Taihu, China) von Yunlin Zhang, Mingliang Liu, Boqiang Qin, van der Woerd, H.J., Junsheng Li, Yunliang Li

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HYDROPT: A fast and flexible method to retrieve chlorophyll-a from multispectral satellite observations of optically complex coastal waters von Van Der Woerd, Hendrik Jan, Pasterkamp, Reinold

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Remotely sensed seasonality in the spatial distribution of sea-surface suspended particulate matter in the southern North Sea von Eleveld, Marieke A., Pasterkamp, Reinold, van der Woerd, Hendrik J., Pietrzak, Julie D.

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Variability in specific-absorption properties and their use in a semi-analytical ocean colour algorithm for MERIS in North Sea and Western English Channel Coastal Waters von Tilstone, Gavin H., Peters, Steef W.M., van der Woerd, Hendrik Jan, Eleveld, Marieke A., Ruddick, Kevin, Schönfeld, Wolfgang, Krasemann, Hajo, Martinez-Vicente, Victor, Blondeau-Patissier, David, Röttgers, Rüdiger, Sørensen, Kai, Jørgensen, Peter V., Shutler, Jamie D.

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Evaluating historic and modern optical techniques for monitoring phytoplankton biomass in the Atlantic Ocean von Brewin, Robert J. W., Pitarch, Jaime, Dall’Olmo, Giorgio, van der Woerd, Hendrik J., Lin, Junfang, Sun, Xuerong, Tilstone, Gavin H.

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Four decades of variability in turbidity in the western Wadden Sea as derived from corrected Secchi disk readings von Philippart, Catharina J.M., Salama, Mhd. Suhyb, Kromkamp, Jacco C., van der Woerd, Hendrik J., Zuur, Alain F., Cadée, Gerhard C.

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In situ and remote-sensed chlorophyll fluorescence as indicator of the physiological state of phytoplankton near the Isles Kerguelen (Southern Ocean) von Timmermans, Klaas R., van der Woerd, Hendrik J., Wernand, Marcel R., Sligting, Merijn, Uitz, Julia, de Baar, Hein J. W.

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Suspended matter filtration causes a counterintuitive increase in UV-absorption von Peperzak, Louis, Stuut, Jan-Berend Willem, van der Woerd, Hendrik Jan

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