Selected Publications
Journals
Conferences
Theses
Journals
Some Neural Network applications in environmental sciences part I: forward and inverse problems in geophysical remote measurements, V. Krasnopolsky and H. Schiller, Neural Networks, vol 16 (2003), 321-334. Determination of the bulk temperature from NOAA/AVHRR satellite data in a midlatitude lake; Sabine Thiemann and Helmut Schiller; International Journal of Applied Earth Observation and Geoinformation, 4 (2003) 339-349. Global Wind Speed Retrieval from SAR; J. Horstmann, H. Schiller, J. Schulz-Stellenfleth and S. Lehner; IEEE Transactions on Geoscience and Remote Sensing, Vol. 41 (30), pp. 2277-2286, 2003.
Improved Determination of Coastal Water Constituent Concentrations From MERIS data; Helmut Schiller and Roland Doerffer; IEEE Transactions on Geoscience and Remote Sensing, Vol. 43, pp. 1585-1591, 2005. Automated Classification of an Environmental Sensitivity Index, Helmut Schiller, Carlo van Bernem and Hansjörg L. Krasemann, Environmental Monitoring and Assessment, vol. 110, pp 291-299, 2005. Practical test of a point-source integrating cavity absorption meter: the performance of different collector assemblies, Röttgers, R., W. Schönfeld, P.-R. Kipp, and R. Doerffer, 2005, Appl. Opt. 44: 5549-5560.
Novelty Detection - Recognition and Evaluation of Exceptional Water Reflectance Spectra, Helmut Schiller, Wolfgang Schönfeld, Hansjörg L. Krasemann and Kathrin Schiller, Environmental Monitoring and Assessment Vol. 132 (1-3) S. 339-350, 2007. Aerosol climatology from ground-based measurements for the southern North Sea, Irina Behnert, Volker Matthias, Roland Doerffer, Atmospheric Research, in press. An intercomparison of in vitro chlorophyll a determinations for MERIS level 2 data validation, Sørensen, K., M. Grung, and R. Röttgers, International Journal of Remote Sensing, Vol. 28, Nos. 3-4, 2007, pp 537-554. The MERIS Case 2 water algorithm, R. Doerffer and H. Schiller, International Journal of Remote Sensing, Vol. 28, Nos. 3-4, 2007, pp 517-535. Comparison of different variable chlorophyll a fluorescense techniques to determine photosynthetic parameters of natural phytoplankton, R. Röttgers, Deep Sea Research I 54 (2007) pp 437-451. The effect of bedforms (crest and trough systems) on sediment erodibility on a back-barrier tidal flat of the East Frisian Wadden Sea, Germany, Mahatma Lanuru, Rolf Riethmüller, Carlo van Bernem, Kerstin Heymann, Estuarine, Coastal and Shelf Science 72 (2007) 603-614. Measurements of optical absorption by chromophoric dissolved organic matter using a point-source integrating-cavity absorption meter, Röttgers, R., Doerffer, Limnol. Oceanogr.: Methods (2007) 5:126-135. Model inversion by parameter fit using NN emulating the forward model - Evaluation of indirect measurements, Helmut Schiller, Neural Networks, Volume 20, Issue 4, Computational Intelligence in Earth and Environmental Sciences, May 2007, Pages 479-483.Determination of the particulate absorption of microalgae using a point-source integrating-cavity absorption meter: verification with a photometric technique, improvements for pigment bleaching and correction for chlorophyll fluorescence. Röttgers, R., Häse, C., and R. Doerffer. 2007. Limnol. Oceanogr. Methods. 5: 1-12.Atmospheric correction algorithm for MERIS above case-2 waters, Thomas Schroeder, Irina Behnert, Michael Schaale, Jürgen Fischer and Roland Doerffer, International Journal of Remote Sensing, Vol. 28, No. 7, 10 April 2007, 1469-1486.
Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans, Stramski, D., Reynolds,R. A., Babin, M., Kaczmarek, S., Lewis, M. R., Röttgers, R., Sciandra, A., Stramska, M., Twardowski, M. S. and Claustre, H., 2008, Biogeosciences 5: 171-201
Bio-optical properties of the marine cyanobacteria Trichodesmium spp., Dupouy, C., Neveux, J., Dirberg, G., Röttgers, R., Tenorio, M.M.B. and Ouillon, S., 2008, Journal of Applied Remote Sensing 2: 023503 Oil pollution in marine ecosystems - policy, fate, effects and response.
Van Bernem, C., Wesnigk, J.B., Wunderlich, M., Adam, S., Callies, U., Bluhm, B. In: Environmental Crisis - Science and Policy, H. von Storch, G. Flöser, R.S.J. Tol (eds.) Springer, Berlin Heidelberg, 2008, pp. 101-139.
Quantitative observation of cyanobacteria and diatoms from spaceusing PhytoDOAS on SCIAMACHY data. Bracher,A., Vountas, M., Dinter, T., Burrows, J. P., Röttgers, R., and Peeken, I. 2009. Biogeosciences, 6: 751–764The distribution and fate of surface-active substances in the sea-surface microlayer and water column. Wurl,O., Miller, L., Röttgers, R., and Vagle, S. 2009. Marine Chemistry 115: 1–9
Erodibility of a mixed mudflat dominated by microphytobenthos and Cerastoderma edule, East Frisian Wadden Sea, Germany. Andersen, T.J., Lanuru, M., van Bernem, C., Pejrup, M., Riethmueller, R.. Estuarine, Coastal and Shelf Science Volume 87, issue 2, year 2010, pp. 197-206.
Gry Mine Berg, Matthew M. Mills, Matt C. Long, Richard Bellerby, Volker Strass, Nicolas Savoye, Rüdiger Röttgers, Peter L. Croot, Adrian Webb, and Kevin R. Arrigo. Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean. GLOBAL BIOGEOCHEMICAL CYCLES, VOL. 25, GB3013, 16 PP., 2011 B. B. Taylor, E. Torrecilla, A. Bernhardt, M. H. Taylor, I. Peeken, R. Röttgers, J. Piera, and A. Bracher . Bio-optical provinces in the eastern Atlantic Ocean and their biogeographical relevance . Biogeosciences Discuss., 8, 7165-7219, 2011 R. Röttgers and B. P. Koch . Indications for a ubiquitous dissolved pigment degradation product in subsurface waters of the global ocean . Biogeosciences Discuss., 8, 10697-10724, 2011 Boris P. Koch, Ruth Flerus, Philippe Schmitt-Kopplin, Oliver J. Lechtenfeld, Astrid Bracher, Sanja Frka, Blazenka Gašparović, Walter Geibert, Michael Gonsior, Norbert Hertkorn, Rudolf Jaffé, Joachim Kuss, Rubén J. Lara, Marianna Lucio, Shannon L. McCallister, Sucharit B. Neogi, Christa Pohl, Rüdiger Röttgers, Gerd Rohardt, Bettina B. Taylor, Matthias Witt, Zhiyong Xie, Youhei Yamashita, Zhuoyi Zhu, Gerhard Kattner. The ocean’s dissolved organic memory: Molecular biogeochemical provinces, submitted to Science, 2011Philipp Assmy, Victor Smetacek, Marina Montresor, Christine Klaas, Joachim Henjes, Volker H. Strass, Jesús M. Arrieta, Ulrich Bathmann, Gry M. Berg, Eike Breitbarth, Boris Cisewski, Lars Friedrichs, Nike Fuchs, Gerhard J. Herndl, Sandra Jansen, Sören Krägefsky, Mikel Latasa, Uta Passow, Ilka Peeken, Rüdiger Röttgers, Renate Scharek, Susanne E. Schüller, Sebastian Steigenberger, Adrian Webb. Grazer-protected diatoms decouple ocean carbon and silicon cycles around Antarctica. Submitted to Natur Geoscience Mikel Latasa, Joachim Henjes, Renate Scharek, Philipp Assmy, Rüdiger Röttgers, Victor Smetacek. Progressive decoupling between phytoplankton growth and microzooplankton grazing during an iron induced phytoplankton bloom in the Southern Ocean (EIFEX), submitted to Limnol. Oceanogr. 2011
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. Gavin H. Tilstone, Steef W.M. Peters, Hendrik Jan van der Woerd, Marieke A. Eleveld, Kevin Ruddick, Wolfgang Schönfeld, Hajo Krasemann, Victor Martinez-Vicente, David Blondeau-Patissier, Rüdiger Röttgers, Kai Sørensen, Peter V. Jørgensen, Jamie D. Shutler. Remote Sensing of Environment Vol.118, 320-338, 2012. R. Röttgers and S. Gehnke, "Measurement of light absorption by aquatic particles: improvement of the quantitative filter technique by use of an integrating sphere approach", Appl. Opt. 51, 1336-1351 (2012)
Conferences
Neural Network for Retrieval of Concentrations of Water Constituents with the Possibility of Detecting Exceptional out of Scope Spectra, Doerffer, R. and H. Schiller, IEEE 2000 International Geoscience and Remote Sensing Symposium, 24-28 July, Honolulu Hawaii USA, Vol. II, pp. 714-717, ISBN 0-7803-6359-0. Feedforward-Backpropagation Neural Net Program ffbp1.0 , Helmut Schiller, Helmholtz-Zentrum Geesthacht report, Helmholtz-Zentrum Geesthacht 2000/37. Application of neural network method to case II water, Akihiko Tanaka, Motoaki Kishino, Tomohiko Oishi, Roland Doerffer, Helmut Schiller, SPIE proceedings Vol. 4172 (2000), 144-152.
Domain Check for Input to NN Emulating an Inverse Model, Schiller, H. and V. Krasnopolsky, International Joint Conference on Neural Networks, July 15-19, 2001, Washington DC, pp 2150-2152, ISBN 0-7803-7044-9. Global wind speed retrieval from complex SAR data using scatterometer models and neural networks, Jochen Horstmann, Susanne Lehner and Helmut Schiller, IEEE 2001 International Geoscience and Remote Sensing Symposium, 9-13 July, 2001, Sydney, Australia, ISBN 0-7803-7031-7. Temporal and Spatial Variability of Chlorophyll alpha, Supended Solids and Yellow substance in the Yellow Sea and East China Sea Using Ocean Color Sensor, Motoaki Kishino, Akihiko Tanaka, Tomohiko Oishi, Roland Doerffer, Helmut Schiller, SPIE proceedings Vol. 4134 (2001), 179-187. An optical component model for training of a neural network case 2 water algorithm, Roland Doerffer and Helmut Schiller, 4th Berlin Workshop on Ocean Remote Sensing: ``5 Years of MOS-IR'', Berlin, May 30-June 01, ISBN 3-89685-568-9. Derivation of Photosynthetically Available Radiation from METEOSAT data, K. Schiller, Helmholtz-Zentrum Geesthacht 2001/23, (2001), ISNN 0344-9629 A Bio-Optical Absorption Model based on Data of the COLORS Site North Sea, Roland Doerffer, W. Cordes, K. Heymann, P. Kipp, H. Krasemann, W. Schönfeld, 2001, COLORS Final Report
A Neural Network based atmospheric correction procedure for the retrieval of water constituent concentrations in turbid case II water from MERIS data, Roland Doerffer and Helmut Schiller, Ocean Optics XVI, Nov. 18-22, 2002, Santa Fe, New Mexico. Case 2 Water Algorithm for the Medium Resolution Imaging Spectrometer Meris on Envisat; Doerffer, R., Heymann, K. and Schiller, H.; Proceedings of the ENVISAT Validition Workshop, ESA ESRIN, Frascati December 9-13, 2002. Inter-comparison of spectral backscattering coefficients measured in-situ using several Hydroscat instruments ? Results from PlymCal-2 and REVAMP cruises, Peter Viskum Jørgensen, G.H. Tilstone, J. Høkedal, W. Schönfeld, 2003, Proceedings of the ENVISAT validation workshop, 9 - 13 Dec 2002, ESRIN, Frascati, Italy. European Space Agency.
Application of Autoassociative NN's for Monitoring and for Model Inversion; Schiller, H., Krasemann, H. L. and Wehde, H.; Proceedings of 2nd IEEE Workshop on Advanced Environmental Sensing and Monitoring Technology, Como, Italy, 24. & 25. July, 2003, pp 29-33, ISBN 88-7488-072-3. Neural Net Architectures for Scope Check and Monitoring, Helmut Schiller, CIMSA 2003 - International Symposium on Computational Intelligence for Measurement Systems and Applications, Lugano, Switzerland, 29-31 July 2003, ISBN 0-7803-7784-2. A Bio-Optical Absorption Model based on Data of the COLORS Site North Sea, COLORS Final Report, Roland Doerffer, H. Schiller, H. Krasemann, K. Heymann, W. Cordes, W. Schönfeld, R. Röttgers, I. Behnert, P. Kipp,2003 MERIS case 2 water validation: early results North Sea / Helgoland / German Bight. Doerffer, R., H. Schiller, H. Krasemann, K. Heymann, W. Cordes, W. Schönfeld, R. Röttgers, I. Behnert, P. R. Kipp, 2003. Proc. of Envisat Validation Workshop, Frascati, Italy, 9 - 13 December 2002 (ESA SP-531, August 2003) Early results for validation of MERIS water products in the Skagerrak, Sørensen, K., Høkedal, J., Aas, E., Doerffer, R., Dahl, E. 2003. Proc. of Envisat Validation Workshop, Frascati, Italy, 9 - 13 December 2002 (ESA SP-531, August 2003)
Protocols for the validation of MERIS products in Case 2 waters,Tilstone, G. H., Moore, G. F., Sørensen, K., Doerffer, R., Røttgers, R., Ruddick, K. G., Pasterkamp, R., Jørgensen P.V. (2004): . Proceedings of the ENVISAT validation workshop, Frascati 2003, European Space Agency. 6(10): 875-889.
Determination of parameters which control the primary production by phytoplankton in the German Bight using MERIS and AATSR data, R. Doerffer, R. Röttgers, K. Schiller, W. Schönfeld, Proceedings of the MERIS (A)ATSR Workshop, ESA ESRIN, Frascati September 26-30, 2005. Atlas of Chlorophyll-a concentration for the North Sea based on Meris imagery of 2003, Steef W.M. Peters, M. Eleveld, R. Pasterkamp, H. van der Woerd, M. Devolder, S. Jans, Y. Park, K. Ruddick, T. Block, C. Brockmann, R. Doerffer, H. Krasemann, R. Röttgers, W. Schönfeld, P.V. Jørgensen, G. Tilstone, V. Martinez-Vicente, G. Moore, K. Sørensen, J. Høkedal, T.M. Johnson, E.R. Lømsland, E. Aas, 2005, published at the Vrije Universiteit, Amsterdam.
Model Inversion by Parameter Fit Using NN Emulating the Forward Model - Evaluation of Indirect Measurements, Helmut Schiller, 2006 International Joint Conference on Neural Networks, Vancouver, BC, Canada, July 16-21, 2006., ISBN 0-7803-9490-9. The Meris Neural Network Algorithm, Roland Doerffer and Helmut Schiller, in IOCCG Report Number 5, 2006, ISSN: 1098-6030. DEM in inter-tidal flats from repeat-pass space borne interferometry (InSAR) - Technical Report, F. Engel, master thesis written at Helmholtz-Zentrum Geesthacht Research Institute / KU Leuven (Belgium) / Purdue University (USA), not published, 2006.
Estimation of Algae Concentration in Cloud Covered Scenes Using Geostatistical Methods, D. Müller, Proceedings of the Envisat Symposium 2007, Montreux, Switzerland (ESA SP-636, July 2007) ISBN: 92-9291-200-1 Synergistic Use of Ferrybox and Envisat Data with the Aid of a Hydrodynamic Transport Model, H. Krasemann and W. Petersen, Proceedings of the Envisat Symposium 2007, Montreux, Switzerland (ESA SP-636, July 2007) ISBN: 92-9291-200-1Novelty Detection in North Sea Water Reflectance Spectra, H. Schiller, W. Schönfeld, H. Krasemann and K. Schiller, Proceedings of the Envisat Symposium 2007, Montreux, Switzerland (ESA SP-636, July 2007) ISBN: 92-9291-200-1
Theses
- Sensitivitätsraster Deutsche Nordseeküste II - Aktualisierung und Erstellung eines operationellen Modells zur Vorsorgeplanung bei der Ölbekämpfung. Projektbericht im Auftrag des Havariekommandos - Gemeinsame Einrichtung des Bundes und der Küstenländer. K.H. van Bernem, R.Doerffer, A. Grohnert, K. Heymann, U. Kleeberg, H. Krasemann, J. Reichert, M. Reichert, H. Schiller. Helmholtz-Zentrum Geesthacht 2007/2, pp: 196.
- Sensitivitätskartierung zur Ölbekämpfung an den Unterläufen von Eider, Elbe, Weser und Ems. Projektbericht im Auftrag des Havariekommandos - Gemeinsame Einrichtung des Bundes und der Küstenländer. K.H. van Bernem, J. Fleischmann, H. Krasemann, D. Krüger, T.P. Lübbe. Helmholtz-Zentrum Geesthacht 2007/3, pp: 73, 12 Karten.
- Analyse der Schwebstoffverteilung in der Deutschen Bucht mit dem Satelliteninstrument SEVIRI, Ina Burjack, Bachelorarbeit im Fachbereich Geoinformatik/Geophysik an der TU Bergakademie Freiberg, 2010.
- Dagmar, Dissertation ........
