the HZG project to develop advanced water colour products (e.g. chlorophyll-a concentration of phytoplankton functional types, gelbstoff absorption). The uncertainty will be derived from SCIATRAN simulations

[1]. Seasonal sea ice cover retreat favors phytoplankton bloom development and the extension of phytoplankton growing season, increasing annual mean phytoplankton biomass and production [2,3]. This increase [...] derive particulate absorption coefficients ( a p ) [8-19]. Chl-a, the proxy of phytoplankton biomass, together with phytoplankton functional types, are then derived from a p . First results for the project [...] PhD project(2015-) Yangyang Liu funded by the China Scholarship Council (CSC) Phytoplankton, the main primary producers at the base of marine food web, have distinctive impacts on the changes of Arctic

May) and time varying phytoplankton blooms. At the marginal sea ice zone of the western Fram Strait a stratification induced by sea-ice melt was shown to have promoted phytoplankton growth, which resulted [...] proved to act as a guiding factor for the the open ocean phytoplankton blooms, while the declining shelf ice was seen to promote the phytoplankton blooms along the coast of Svalbard. In the study by Cherkasheva [...] PhD Thesis Alexandra Cherkasheva 2009-2014 Arctic phytoplankton today deserve special attention as they are already living in waters with most prominent climate change effect, which are shifting towards

focuses on the assessment of the impact of environmental change in the Southern Ocean on phytoplankton. Phytoplankton is the key organism determining the functioning of the marine ecosystem and biogeochemical [...] Antarctic phytoplankton in response to environmental change studied by a synergistic approach using multi- and hyper-spectral satellite data (PhySyn) Project funded by the DFG within SPP "Antarctic" ( [...] are to be used to develop generic methods, which extract unique global long-term information on phytoplankton composition. The methods will be based on using all available high-resolution optical satellite

inelastic processes: vibrational Raman scattering by water molecules (VRS), and fluorescence of phytoplankton pigments, mainly chlorophyll a, and colored dissolved organic matter (CDOM). Their effect on the [...] Here, we focus on the chlorophyll a fluorescence, which is directly linked to the physiology of phytoplankton or plant. When chlorophyll molecules absorb light, most of this energy is transformed into chemical [...] about chlorophyll fluorescence can be used to assess the productivity and physiological state of phytoplankton. In our retrieval, we evaluate the filling-in in SCIAMACHY data of the Fraunhofer line Fe I at

strongly depends on the size and composition of phytoplankton cells, in addition to the structure of the trophic community. Therefore, information on phytoplankton composition is needed for a better estimate [...] assess the contribution of different phytoplankton functional types (PFT) to the oceanic carbon cycle. Because of the complex spatial and temporal dynamics of phytoplankton, investigations usually rely on satellite [...] Tracking phytoplankton from space in a changing Southern Ocean PhD project by Mariana Soppa (2010-2015) In recent years, the interest on quantitative estimation of the abundance and composition of different

Fluorescence, Phytoplankton Functional Types and Light Penetration Depth with SCIAMACHY " at Ocean Science Meeting, 26 Feb 2016, New Orleans, USA " SynSenPFT: synergistic retrieval of phytoplankton functional [...] Hirata T., Losa S., Organelli E., Raitsos D., Uitz J., Vogt M., Wolanin A. (2017) Obtaining Phytoplankton Diversity from Ocean Color: A Scientific Roadmap for Future Development. Frontiers in Marine Science [...] Hirata T., Hirawake T., Hardman-Mountford N., Mouw C., Roy S., Uitz J. (2017) Inter-Comparison of Phytoplankton Functional Types Derived from Ocean Color Algorithms and Earth System Models: Phenology. Remote

information from satellite data Within our group new retrievals to derive new biooptical information (phytoplankton com-position, light availability, fluorescence of CDOM and chlorophyll) from hyper-spectral satellite [...] satellite algorithms and the development of methods to analyse composition of particles, especially phytoplankton, and coloured dissolved organic matter from optical measurements. Radiometers measuring the underwater

SynSenPFT Synergistic Exploitation of Hyper-and Multispectral Sentinel-Measurements to Determine Phytoplankton Functional Types (PFT) at Best Spatial and Temporal Resolution To overcome the short-comings of [...] temporal and spatial coverage), the project's objective is a substantial improvement of retrieving phytoplankton groups with defined accuracy and good spatial and temporal coverage. This shall be done by developing [...] Bracher A. (2017) SynSenPFT: ein globaler Datensatz zur Verteilung von funktionalen Gruppen von Phytoplankton im Ozean. REKLIM News und Forschungsthema des Monats November 2017. Pages 3-5 Prof. Dr. Astrid

Southern Ocean phytoplankton are major drivers of global carbon cycling accounting for 20% of the global annual primary production. Most of this production relies on large phytoplankton blooms of a few [...] Antarctic continent, while pelagic phytoplankton contributes to a minor degree. The focus of the EcoTrace group is to elucidate the sensitivity of Southern Ocean phytoplankton to global change, in particular [...] availability of trace metals and light are considered key factors in controlling Southern Ocean phytoplankton productivity and community structure. Until now, only little information is available on how these