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Chemical Oceanography Unit – Members

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Chemical Oceanography Unit – Members. Alberto Vieira Borges, FNRS Research associate Biogeochemistry of aquatic systems Bruno Delille, BSP Researcher Carbon cycle in the Southern Ocean and climatic feedbacks Willy Champenois, PhD student Carbon cycle in the Posidonia oceanica meadows - PowerPoint PPT Presentation
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Chemical Oceanography Unit – Members Alberto Vieira Borges, FNRS Research associate Biogeochemistry of aquatic systems Bruno Delille, BSP Researcher Carbon cycle in the Southern Ocean and climatic feedbacks Willy Champenois, PhD student Carbon cycle in the Posidonia oceanica meadows Nicolas-Xavier Geilfus, PhD student Sea ice CO 2 dynamics Yefanlan José Mathieu Koné, PhD student Carbon cycle in tropical coastal ecosystems Kim Suykens, PhD student Carbon cycle in the Gulf of Biscay and climatic feedbacks Marc-Vincent Commarieu, technician
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Page 1: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Members

Alberto Vieira Borges, FNRS Research associateBiogeochemistry of aquatic systems

Bruno Delille, BSP ResearcherCarbon cycle in the Southern Ocean and climatic feedbacks

Willy Champenois, PhD studentCarbon cycle in the Posidonia oceanica meadows

Nicolas-Xavier Geilfus, PhD studentSea ice CO2 dynamics

Yefanlan José Mathieu Koné, PhD studentCarbon cycle in tropical coastal ecosystems

Kim Suykens, PhD studentCarbon cycle in the Gulf of Biscay and climatic feedbacks

Marc-Vincent Commarieu, technicianLaboratory analysis and field work

Page 2: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Study SitesThe Chemical Oceanography Unit carries out research on the greenhouse gas carbon dioxide (CO2) in several environments :

- Estuaries, lagoons and mangroves- Posidonia seagrass meadows- Southern Ocean- Arctic and Antarctic sea-ice- African lakes

To better constrain the absorption of CO2 by aquatic systems.

Page 3: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Methods

“Classical” oceanographic cruises

Automated system on board the Belgica

Automated system on a fixed station in the Scheldt

Adapted for “extreme” and minimal conditions

Mesocosm experiments

O2 and CO2 mooring in Corsica (Calvi)

• Two experimental approaches :- « Manned » field work- Autonomous systems (Belgica, Scheldt and Corsica)

• Scaling of data from Remote Sensing images • Collaboration with several modelling groups

Page 4: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Scheldt

EU IP CARBOOCEAN (http://www.carboocean.org/) & FNRS FRFCMonitoring of pCO2 in the Upper Scheldt (Antwerpen – Ste Anna station)

Determine the long-term changes of pCO2 related to nutrient and organic carbon input regulation policies and initiatives

Page 5: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Belgian Coastal Zone

EU IP CARBOOCEAN (http://www.carboocean.org/)Monitoring of pCO2 in the Belgian Coastal Zone (automated system on the Belgica since September 2000)

Determine inter-annual variability of pCO2 dynamics

Page 6: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Belgian Coastal Zone

Belspo BELCOLOUR-2 (http://www.mumm.ac.be/BELCOLOUR/EN/)Derivation of pCO2 fields in the Belgian Coastal Zone from remote sensing imagery (Chla, SST) and modelling (SSS)

Page 7: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Gulf of Biscay

Belspo PEACE (http://www.co2.ulg.ac.be/peace/)Carbon cycling in coccolithophorid blooms in the frame of ocean acidification

8 74

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Shelf8 74

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2006/06/01

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b c

2006/06/01

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a

15 °W 13 °W 11 °W 9 °W 7 °W 5 °W

48 °N

50 °N

52 °N

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456

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200m1000m2000m4000m

8 74

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2006/06/01

2006/06/05

a b

b c

2006/06/01

2006/06/05

a

15 °W 13 °W 11 °W 9 °W 7 °W 5 °W

48 °N

50 °N

52 °N

123

456

78

200m1000m2000m4000m

Celtic Sea

Channel

Goban Spur

Meriadzek Terr.La Chapelle Bank

Ir

UK

FArmorican

Shelf

Page 8: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Calvi mooring

MIS FNRS (http://www.co2.ulg.ac.be/posidonia.htm)Monitoring of O2 and pCO2 in Posidonia meadow (Calvi) since 2006Determine long term changes of productivity (Gross Primary production (GPP) and Community Respiration (CR))

Page 9: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Mediterranean Sea

EU IP SESAME (http://www.sesame-ip.eu/)Evaluation of air-sea CO2 fluxes in the Mediterranean and Black Seas in the frame of EU IP SESAME

Underway measurements

CilicianBasin

LevantinBasin

EasternAegean Sea

Straits &Marmara Sea

CentralBlack Sea

Bilim

CTD casts

CilicianBasin

LevantinBasin

Straits &Marmara Sea

CentralBlack Sea

Bilim

NEBlack Sea

AkvanavtUrania (CNR-ISMAR)

AdriaticSea

Strait ofGibraltar& Gulf ofCadiz

AlboranSea

Regina MarisUrania (UNIV-PERP)

W esternMed.

RV Aegaio (2008)

CentralAegean Sea

Ionian Sea

CentralAegean Sea

Ionian SeaRV Aegaio

SWBlack Sea

Page 10: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Southern Ocean

Assement of air-sea CO2 fluxes in the Southern Ocean (scaled from RS images)

Assement of the penetration of anthropogenic CO2 in the Southern Ocean

Belspo BELCANTO-III (http://www.co2.ulg.ac.be/belcanto/index.htm)

Page 11: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Sea-ice Dynamics

Belspo BELCANTO-III (http://www.co2.ulg.ac.be/belcanto/index.htm) Sea-ice biogeochemistry in Arctic and Antarctic sea-ice (atmospheric fluxes of climatologicaly active gazes (CO2, DMS)).

Antarctic sea ice in spring and summer acts as a sink for atmospheric CO2 of about 0.025 PgC yr-1

Page 12: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Lake Kivu

FNRS FRFC CAKI (http://www.co2.ulg.ac.be/kivu.htm)

Carbon cycling in a meromictic « killer » lake

Surface waters are net autotrophic but a source of CO2 due to geothermal (magmatic) inputs

POC flux = 10.3 (closing term) 59.6

6.9

44.62.2epilimnion

hypolimnion

atmosphere

rivers Ruzizi

DIC fluxesin mmol m-2 d-1

POC flux = 10.3 (closing term) 59.6

6.9

44.62.2epilimnion

hypolimnion

atmosphere

rivers Ruzizi

DIC fluxesin mmol m-2 d-1

Page 13: Chemical Oceanography Unit – Members

Chemical Oceanography Unit – Modelling

Modelling of Carbon and CO2 cycles in collaboration with several groups :

- Bay of Calvi (M. Grégoire)- Ligurian Sea - Dyfamed (M. Grégoire)- Black Sea (M. Grégoire & J.-M. Beckers)- Southern Bight of the North Sea Past 50 yea rs (N. Gypens & C. Lancelot)- Southern Bight of the North Sea present 3-D (N. Gypens & G. Lacroix)- Scheldt (N. Gypens & C. Lancelot ; E. Dellhez & E. Deleersnijder)- Southern Ocean & Antarctic sea-ice (C. Lancelot & H. Goosse)


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