Dr Thomas Schroeder

		Research Scientist
		CSIRO Land and Water GPO Box 1666 Canberra ACT 2601 Ph: +61-02-6246 5742 Fax: +61-02-6246 5800 Email: Thomas Schroeder

Dr Thomas Schroeder works as a Research Scientist and Scientific Programmer within the CSIRO Remote Sensing research group, which is part of the Environmental Observation and Landscape Science research program of the Land and Water Division.

Current Research

In his current research Dr Thomas Schroeder focuses on the development, validation and implementation of dedicated inversion algorithms for Australia's inland, coastal, marine and coral reef ecosystems using MODIS, MERIS and SeaWiFS satellite data in order to enable reliable mapping, detection and monitoring of aquatic resources.

Expertise

• Environmental remote sensing
• Algorithm development for the retrieval of terrestrial, atmospheric and oceanic properties from air- and space-borne instruments
• Radiative transfer in atmosphere and ocean
• Artificial neural networks
• Utilisation and calibration of terrestrial and aquatic ground based instruments

Recent Professional Experience

Research Scientist, German Aerospace Centre DLR, Remote Sensing Technology Institute, Division: Atmospheric Processors, Oberpfaffenhofen, Germany (2005-2006):

• 2005 - 2006 DLR-ESA Project – GDP4:
  Integration and verification of the GOME version 4 data processor settings into the SCIAMACHY off-line data processor for the retrieval of  O3 and NO2 vertical column densities.  

Research Scientist, Institute for Space Science, Department of Earth Science, Free University Berlin, Germany (2001-2005):

• 2004 – 2005 ESA-Project MERIS Global Land Surface Albedo:
  Development of an operational aerosol correction algorithm for the retrieval of land surface reflectances from MERIS and MODIS measurements.
• 2001 – 2004 EU-Project Neural Network Algorithms for Ocean Color:
  Development of advanced inversion algorithms for the retrieval of chlorophyll-a, total suspended matter and gelbstoff from MERIS and SeaWiFS measurements based on inverse modelling of radiative transfer simulations by using artificial neural network techniques.
• 2000 German UFZ-funded Research Project Relax:
  Development and validation of an atmospheric correction algorithm for airborne remotely sensed multi-spectral radiance data of the Compact Airborne Spectrographic Imager CASI; Acquisition of in-situ ground based sun photometer and surface reflectance measurements; Instrument calibration.
• 1999 German BMBF-funded Research Project European Ecosystems:
  Implementation of a cloud masking algorithm for AVHRR data.

Academic Qualifications

• 2005: PhD, Free University Berlin, Department of Earth Science, Germany

• 1999: Msc, (Meteorology) Free University Berlin, Germany

Publications

CSIRO Land and Water publications list

Webstreamed seminar, 5 December 2008, Hobart, Tasmania
CSIRO's new remote sensing algorithms for coastal water quality assessment in Tasmania and the Great Barrier Reef 45:15 (206 MB)

Pre-CSIRO Land and Water publications

Schroeder Th., Behnert I., Schaale M., Fischer J. and Doerffer R. Atmospheric correction algorithm for MERIS above Case-2 waters, International Journal of Remote Sensing, Vol 28 (7), 2007.

von Bargen, A.; Schroeder, Th.; Kretschel, K.; Hess, M.; Lerot, C.; Van Roozendael, M.; Vountas, M.; Kokhanovsky, A.; Lotz, W.; Bovensmann, H.; Operational SCIAMACHY Level 1b-2 Off-line Processor: Total Vertical Columns for Ozone and NO2 and Cloud Products; In: ESA [Ed.]: Proceedings of the ENVISAT Symposium 2007, Montreux, Switzerland, 2007.

von Bargen, A.; Schroeder, Th.; Doicu, A.; Kretschel, K.; Lerot, C.; Van Roozendael, M.; Kokhanovsky, A.; Vountas, M.; Bovensmann, H.; Hess, M.; Aberle, B.; Schreier, F.; SCIAMACHY Level 1b-2 Data Processing: Update of Off-line Data Processor to Version 3.0. In: ESA [Ed.] Proceedings of the Third Workshop on the Atmospheric Chemistry, Validation of ENVISAT (ACVE-3), 4-7 Dec 2006, ESA ESRIN, Frascati, Italy, ESA SP-642, 2007.

Schroeder Th., von Bargen A., Lerot C., Van Roozendael M., Weber M., Lamsal L., and Bovensmann H., Inter-comparison on the influence of different cloud parameter algorithms for the derivation of O3 and NO2 vertical column densities from SCIAMACHY nadir back-scattered observations, In: ESA [Ed.]: Proceedings of the First ESA Atmospheric Science Conference 2006, Frascati, Italy, 2006.

Schreier, F.; Hess, M.; Doicu, A.; Schroeder, Th.; and von Bargen, A.; Recent Advances in SCIAMACHY Near Infrared Nadir Level 2 Algorithm Development; In: ESA [Ed.] Proceedings of the First ESA Atmospheric Science Conference 2006, Frascati, Italy, SP-628, 2006.

von Bargen, A.; Kretschel, K.; Doicu, A.; Hess, M.; Schreier, F.; Schroeder, Th.; Lerot, C.; Van Roozendael, M.; Vountas, M.; Kokhanovsky, A.; Lotz, W.; Bovensmann, H.; The Major Revisions of the Operational SCIAMACHY Level 1b-2 Off-line Data Processor., In: ESA [Ed.]: Proceedings of the First ESA Atmospheric Science Conference 2006, Frascati, Italy, SP-628, 2006.

Fischer J., Schroeder Th., He M.-X., Retrieval of Water Constituents in Chinese Waters from MERIS; In: Proceedings of the 2006 ESA-NRSCC Dragon Symposium, Lijiang, Yunnan, P. R. China, 2006.

Lerot C., Van Roozendael M., Van Geffen J., Fayt C., Spurr R., Eskes H, Van der A R., Bracher A., Nath Lamsal L., Weber M., Schroeder, Th.; Kretschel, K.; and von Bargen, A.; Intercomparison of Global Total Ozone Measurements Retrieved from ENVISAT/SCIAMACHY Using Different State-of-the-art Algorithms, In: ESA [Ed.]: Proceedings of the first ESA Atmospheric Science Conference 2006, Frascati, Italy, 2006.

Schroeder Th., Fischer J., Preusker R., Schaale M., Regner P., Retrieval of surface reflectances in the framework of the MERIS GLOBAL LAND SURFACE ALBEDO MAPS Project, In ESA [Ed.]: Proceedings of the MERIS-(A)ATSR User Workshop 2005, ESA ESRIN, Frascati, Italy, SP-597, 2005.

Schroeder Th., Fischer J., Preusker R., Regner P.,  Aerosol correction above land in the framework of the MERIS GLOBAL LAND SURFACE ALBEDO MAPS Project, In: Proceedings of European Geoscience Union Conference, Vienna, Austria, 2005.

Schroeder Th., Remote sensing of coastal waters with MERIS on basis of explicit amd implicit atmospheric correction algorithms, Dissertation (German), Free University Berlin, Germany, 2005.

Schroeder Th., Schaale M., Zhang T., Fischer J., Behnert I., and Doerffer R., Retrieval of water constituents in case-2 waters from MERIS measurements: A comparison of direct and indirect inversion schemes, In: Proceedings of the ASLO-TOS Ocean Color Research Conference, Honolulu, Hawaii, USA, 2004.

Schaale M., Schroeder. Th., Fischer J., and Zhang T., Effects of the MERIS design on the retrieval of water-leaving radiances by neural networks, In: Proceedings of the ASLO-TOS Ocean Color Research Conference, Honolulu, Hawaii, USA, 2004.

Schroeder Th., and Fischer J., Atmospheric correction of MERIS imagery above case-2 waters, In: Proceedings of the 2003 MERIS User Workshop, ESA ESRIN, Frascati, Italy, 2003.

Schroeder Th., Asseng H., Wapler K., and Fischer J., Retrieval of aerosol properties with SeaWiFS: A dust event originating from Central Asia, International Symposium Environmental Change in Central Asia, Climate Geodynamics, Evolution, Human Impact, Berlin, Germany, 2003.

Schroeder Th., Schaale M., Fell F. and Fischer J., "Atmospheric correction algorithm for MERIS data: A neural network approach", In: Proceedings of the Ocean Optics XVI Conference, Santa Fe, New Mexico, USA, published on CD ROM, 2002.

Schroeder Th., Fischer J., Schaale M. and Fell F., "Artificial neural network based atmospheric correction algorithm: Application to MERIS data", In: Proceedings of the International Society for Optical Engineering (SPIE), Vol. 4892, Hangzhou, China, 2002.

Fell F., Fischer J., Schaale M., and Schroeder Th., Retrieval of chlorophyll concentration from MERIS measurements in the spectral range of the sun-induced chlorophyll fluorescense, In: Proceedings of the International Society for Optical Engineering (SPIE), Vol. 4892, Hangzhou, China, 2002.

Schroeder Th., Schaale M., Fell F., and Fischer J., Atmospheric correction algorithm for satellite data over case-1 waters, In: Proceedings of the Seventh International Conference on Remote Sensing for Marine and Coastal Environments, Miami, Florida, USA, published on CD ROM, 2002.

Schaale M., Schroeder Th., Fell F., and Fischer J., Estimation of atmospheric and oceanic parameters from satellite data, In: Proceedings of the Seventh International Conference on Remote Sensing for Marine and Coastal Environments, Miami, Florida, USA, published on CD ROM, 2002.

Fell F., Preusker R., and Schroeder Th., Automated atmospheric correction of AVHRR channel 1 and 2 data using dark surface targets, In: Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS) 2001, Sydney, Australia, 2001.

Schroeder Th., Fischer J., and Preusker R., Atmospheric correction of multispectral remote sensing data by a neural network, In: Proceedings of the American Society for Photogrammetry and Remote Sensing (ASPRS) 2000 Annual Conference, Washington D. C., USA, published on CD ROM, 2000.