International Workshop on Organic Matter Spectroscopy 2015


Preliminary schedule and sessions program.

September 22, 2015 Tuesday


Registration, morning coffee, mingling, housekeeping, technical notes.



Welcome and opening of workshop by Director of the Institute of Oceanology Polish Academy of Science


09.15 – 10.30

Course on the DrEEM use for analysis and banking of DOM fluorescence spectral data.


10.30 – 11.00

Coffee break


11.00 – 13.00

Course on the DrEEM use for analysis and banking of DOM fluorescence spectral data, continues


13.00 – 14.00

Lunch break


14.00 – 15.00

Course on the DrEEM use for analysis and banking of DOM fluorescence spectral data, continues



5.00 – 15.30

Coffee break


15.00 – 17.00

Course on the DrEEM use for analysis and banking of DOM fluorescence spectral data.

September 23, 2015 Wednesday


Registration, morning coffee

Land to ocean fluxes of DOM from glaciers, permafrost, rivers and estuaries.


dr Robert Spencer

Florida State University, Tallahassee, USA


The session focuses on fluxes of DOM from land to ocean in the Arctic and Boreal zone. DOM contained in glaciers, permafrost, and produced in boreal and tundra environments is released into ground and surface waters, driven by hydrologic processes (e.g. spring thaw, rainfall events) or due to increasing temperatures in these regions. This DOM is subsequently transported out to coastal seas and the Arctic Ocean where it is subject to microbial and photochemical processes. This session is focused on studies coupling CDOM measurements to DOM characterization techniques to derive improved mobilization and export terms from land to ocean and assessment of how DOM is transformed in inland and marine environments through microbial and photochemical processes.


Invited lecture by Simon Belanger,
Université du Québec à Rimouski UQAR Rimouski, Québec, Canada

Exports of CDOM and FDOM from boreal watersheds into the Gulf of St. Lawrence. implications of river damming and seasonality.


09.45 – 10.05

Seasonal and Spatial variability in Dissolved Organic Matter in the North West European Shelf sea.

Nealy Carr1 and Claire Mahaffey11

1University of Liverpool, UK


10.05 – 11.25

Developing a Thirty Year Record of DOM in Siberia's Yenisey and Ob rivers using Landsat Imagery

Claire Griffin1, Greg Fiske2, Robert M. Holmes2, James W. McClelland1

1 University of Texas at Austin, Marine Science Institute, Port Aransas, TX USA
2 Woods Hole Research Center, Falmouth, MA USA


11.25 – 12.00

Coffee break


12.00 – 12.20 

Seasonality of chromophoric dissolved organic matter and molecular composition in Arctic lakes along the North Slope of Alaska

Francois Guillemette1, Karen E. Frey2, David C. Podgorski3, Robert G. M. Spencer1

1 Dept. of Earth, Ocean and Atmospheric Science, Florida State University, USA
2 Graduate School of Geography, Clark University, USA
3 Future Fuels Institute, Florida State University, USA


12.20 – 12.40

Optical measurements for examining pan-Arctic trends in terrestrial dissolved organic matter

Paul J Mann1 and Robert G. M. Spencer2

1 Northumbria University, Newcastle Upon Tyne, UK
2 Dept. of Earth, Ocean and Atmospheric Science, Florida State University, USA)


12.40 – 13.00

Properties and distribution of dissolved organic matter in the White Sea, Arctic Ocean

Alexey Pavlov1, Mats A. Granskog1, Colin A. Stedmon2, Andrey Semushin3, Tõnu Martma4, Boris V. Ivanov5

1 Norwegian Polar Institute, Norway
2 National Institute for Aquatic Resources, Technical University of Denmark, Denmark
3 Northern Branch of Polar Research Institute of Marine Fisheries and Oceanography (SevPINRO), Russia
4 Tallinn University of Technology, Estonia
5 Arctic and Antarctic Research Institute, Russia


13.00 – 14.30

Lunch break

Spectroscopic characterization of DOM in Polar regions.


dr Mats Granskog

Norwegian Polar Institute, Norway


Studies focused on spectroscopic characterization (absorption and fluorescence) of CDOM/FDOM in Polar regions. The DOM optical properties are often used as a tool to study DOM dynamics on different spatial and temporal scales are welcome to contribute to this session. The FDOM measurements combined with multivariate statistics model are capable to resolve qualitative changes of DOM due to dilution, and transformation processes related to microbial activity and DOM photochemistry. The absorption budget and contribution of CDOM to heating of the surface of the Arctic Ocean can be directly quantified by interaction of CDOM with incident solar radiation. The CDOM can also act as water traces therefore its budget could estimated by linking of CDOM optical properties with inflowing and out flowing water masses into the Arctic Ocean. CDOM/FDOM spectral properties the in the Antarctic and Arctic region will be compared. The role of internal sources in the CDOM/FDOM budget in the Arctic Ocean related to phytoplankton bloom in the sea ice, under sea ice and within open waters will be discussed. Importance of sea ice formation and melt in near surface CDOM dynamics will be addressed.

14.30 – 15.15

Invited lecture by Atsushi Matsuoka,
Laval University, Takuvik Joint International Laboratory Quebec, Canada

Roles of colored dissolved organic matters in the Arctic Ocean.


15.15 – 15.35

Tracing the composition of DOM in the Arctic Ocean with fluorescence spectroscopy

Rafael Gonçalves-Araujo1, Colin Stedmon2, Astrid Bracher1

1Alfred Wegener Institute for Polar and Marine Research (AWI), Climate Sciences, PHYTOOPTICS Group, Germany
2Technical University of Denmark (DTU), National Institute of Aquatic Resources, Denmark


15.35 – 15.55

Daily measurements of the contribution of CDOM to water column light penetration beneath the Arctic pack ice. Spring through Fall

Victoria Hill1, Bonnie Light2, Mike Steele2

1Department of Ocean, Earth and Atmospheric Sciences, Old Dominion University, Norfolk, VA, USA
2University of Washington, USA


15.55 – 16.30

Coffee break


16.30 – 16.50

Characterization of Chromoforic and Fluorescent Dissolved Organic Matter in the Nordic Seas. The role of phytoplankton as a variability driver

Anna Raczkowska1,2, Piotr Kowalczuk1, Sławomir Sagan1, Agnieszka Zdun1, Monika Zabłocka1

1Institute of Oceanology, Polish Academy of Sciences, Poland
2Centre for Polar Studies, Leading National Research Centre, Poland


16.50 – 17.10 

Bio-optical properties of West Spitsbergen Shelf waters

Sławomir Sagan1, Piotr Kowalczuk1, Karolina Borzycka1, Anna Raczkowska1,2, Agnieszka Zdun1, Justyna Meler1

1Institute of Oceanology, Polish Academy of Sciences, Poland
2Centre for Polar Studies, Leading National Research Centre, Poland


7.10 – 17.30

Transformations in autochthonous DOM. an Antarctic Supraglacial case study

Heidi Smith1, Maya Wei-Haas2, Michael SanClements3, Juliana D’Andrilli1, Christine M. Foreman1, Yu-Ping Chin2, Diane M. McKnight4

1Center for Biofilm Engineering, Montana State University, USA
2School of Earth Sciences, The Ohio State University, USA
3National Ecological Observatory Network (NEON), USA
4INSTAAR and University of Colorado, USA

September 24, 2015 Thursday


Morning coffee and mingling

Photochemical transformation of CDOM/FDOM. spectral characterization, quantum efficiency and kinetics.


Anssi Vähätalo

Department of Biological and Environmental Science, University of Jyväskylä, Finland.


Studies focused DOM photochemistry are welcomed to contribute to this session. The photochemical transformation of the DOM is recognized as its most efficient sink of the aquatic environment. The quantum efficiency of photochemical DOM transformation, degradation substrates and products as well kinetics are poorly understand and quantified. The substantial gap in the knowledge remains to be filled in quantification of solar energy utilized in photochemical DOM degradation at different spectral regions and at depths in aquatic systems.


Invited lecture by Huixiang Xie,
Institut des sciences de la mer de Rimouski, Université du Quebec à Rimouski, Québec, Canada

Carbon monoxide. A probe of organic matter photoreactivity and microbial uptake of trace solutes in marine waters


09.45 – 10.05

Impact of Anthropogenic Organic Matter on Coastal Fluorescent Organic Matter . photo- and bio- degradations.

Ibrahim EL-Nahhal1 and Stéphane Mounier1

1Université de Toulon Laboratoire PROTEE, France


10.05 – 10.25

Iron and pH regulating photochemical reactivity of dissolved organic matter

Yufei Gu1 and Anassi Vähätalo1

1Department of Biological and Environmental Science, University of Jyväskylä, Finland


10.25 – 11.10

Coffee break


11.10 – 11.30 

WHAt do we really know about global ocean CO2 photoproduction?

Leanne Powers1 and William L. Miller2

1Skidaway Institute of Oceanography, USA
2University of Georgia, Department of Marine Science, USA


11.30 – 11.50

An inter-calibration of apparent quantum yield spectra for photochemical mineralization of dissolved organic matter in lakes.

Birgit Koehler1, Rose M. Cory2, Karolina Einarsdóttir1, Yufei Y. Gu3, William L. Miller4, Leanne C. Powers4, Anssi Vähätalo3, Collin P. Ward2, Lars J. Tranvik1

1Uppsala University, Sweden
2University of Michigan, USA
3University of Jyväskylä, Finland
4University of Georgia, USA


11.50 – 12.10

Determining Photochemical Efficiency Spectra.

William L. Miller1 and Leanne C. Powers2

1University of Georgia, Department of Marine Science, USA
2Skidaway Institute of Oceanography, USA


12.10 – 13.40

Lunch break


13.40 – 15.10

Open discussion


15.10 – 16.40

Students poster session, refreshments and snacks


September 25, 2015 Tuesday


Registration, morning coffee

New methods for CDOM/FDOM characterization in aquatic environment.


Oliver Zielinski

Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg, Germany


Advance on absorption and fluorescence spectroscopy methods as effective tools to study DOM cycles in aquatic systems will be addressed. The new instrumentations and new data analysis tools will be presented. The need of rigorous measurements protocols, data analysis and correction(e.g. inner-filter correction methods, instrumental corrections, calibration and instruments drift) will be discussed. Examples of new measurements techniques applications will presented.



Invited lecture by Philippe Massicotte, Aarhus University, Department of Bioscience, Roskilde, Denmark

Using a Gaussian decomposition approach to model absorption spectra of chromophoric dissolved organic matt


09.45 – 10.05

Computational assessment of the fluorescence emission of phenol oligomers. A possible insight into the fluorescence properties of humic-like substances (HULIS).

Francesco Barsotti1, Giovanni Ghigo1, Davide Vione1

1University of Turin, Italy


10.05 – 10.25

Absorption and fluorescence characteristics of CDOM in German pre-alpine lakes.

Anna Goeritz1 and Peter Gege2

1Technische Universität München, Remote Sensing Technology, Germany
2German Aerospace Center (DLR), Remote Sensing Institute, Germany


10.25 – 11.10

Coffee break


11.10 – 11.30

Accuracy and precision in spectral measurements of CDOM light absorption coefficients.

Rüdiger Röttgers1 and David McKee2

1Helmholtz-Zentrum Geesthacht, Institute for Coastal Research, Germany

2University of Strathclyde, Scotland


11.30 – 11.50 

AquaDOM - An open-source toolbox for determining apparent fluorescence quantum yields of dissolved organic matter.

Urban J Wünsch1, Kathleen R Murphy2, Colin A Stedmon1

1Technical University of Denmark, National Institute of Aquatic Resources, Denmark

2Chalmers University of Technology, Water Environment Technology, Sweden


11.50 – 12.10

Summary and closing remarks – Piotr Kowalczuk



Coffee and snacks