the marine phytoplankton’s role in the global marine ecosystem and biogeochemical cycles it is necessary to derive its global, in particular the distribution of major functional phytoplankton types (PFT) [...] atmospheric components, for the retrieval of the absorption and biomass of major phytoplankton groups ( PhytoDOAS ; Phytoplankton DOAS) from data of the Scanning Imaging Absorption Spectrometer for Atmospheric [...] (PFT), but also on phytoplankton physiology and its degradation products in the world oceans. Nearly all current global ocean colour products are retrieved from multi-spectral ocean colour sensors, because

resolve ocean optics, the extended SCIATRAN RTM for evaluation and optimisation of the PhytoDOAS phytoplankton group retrieval (see projects SynSenPFT, S5POC, PHYSYN) and other upcoming hyperspectral ocean

assess the ocean optics especially in the open waters and identify directly the distribution of phytoplankton groups and other water constituents in these waters, we take in-situ water samples and direct [...] remote sensing data and the use of various methods to analyse composition of particles, especially phytoplankton, and coloured dissolved organic matter from optical measurements. The derived inherent optical [...] but can be processed as well by ocean color algorithms to derive geophysical quantities such as phytoplankton, colored dissolved organic matter, particle abundance and composition. The in-situ biooptical

‘planktotrons’: large water tanks that allow us to investigate the changes in the algal community, or phytoplankton, and its first predatory fauna, the zooplankton. Using the tanks, we can alter parameters like

to obtain the concentrations of most phytoplankton pigments. The data are often further processed to obtain the chlorophyll-a concentration of various phytoplankton groups (e.g., Taylor et al. 2011, Soppa [...] system (LWCC, WPI) following Lefering et al. (2016). QFT-ICAM: We determine the particulate and phytoplankton absorption coefficients with the portable quantitative filter technique (QFT) integrating cavity

inland and coastal water applications. The applications can cover a wide range as detection of phytoplankton types and harmful algal blooms, water quality monitoring and benthic habitat mapping. EnMAP CalVal

TypSynSat TypSynSat: Monitoring the Phytoplankton Functional Typ es by Syn ergistic Exploitation of Multi- and Hyperspectral Sat ellite Observations The TypSynSat is a joint project of the <link en science [...] ( Mare-ULisbon , Portugal). The project is focusing on developing a system for monitoring key phytoplankton functional types (PFTs) in the following three test areas: The Lake Constance, Salish Sea and [...] the DESIS information allowing to accurately distinguish between optical imprints of different phytoplankton types. To extend the temporal resolution of the retrieved information on the observed PFTs, we

community of microalgae in the Southern Ocean. In comparison to the fecal pellets of krill, Antarctic phytoplankton can more easily take up the micronutrient iron from those produced by salps. Observations made

l (sea surface) information carried by the sea-ice proxy IP 25 and open-water phytoplankton biomarkers in a phytoplankton-IP 25 index, the so-called “PIP 25 Index“ (Fig. 1). The advantage of this approach

Sea ice reconstructions with diatom assemblages and biomarkers Nutrient utilization through phytoplankton measuring Si isotopes in biogenic opal Upper ocean salinity through measuring oxygen isotopes