training & capacity building in developing countries iaea can help to fund scientists from...

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Training & capacity building in developing countries IAEA can help to fund scientists from developing countries interested in participating in GEOTRACES Participation in GEOTRACES cruises short-term training visits to laboratories workshops – where IAEA funds some scientists [developing countries] and some speakers [developed countries] GEOTRACES Important: early planning (> 2 years); contact IAEA in du

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Training & capacity building in developing countries

IAEA can help to fund scientists from developing countries interested in participating in GEOTRACES

• Participation in GEOTRACES cruises

• short-term training visits to laboratories

• workshops – where IAEA funds some scientists [developing countries] and some speakers [developed countries]

GEOTRACES

Important: early planning (> 2 years); contact IAEA in due time

GEOTRACES study off Namibia Objective: Cycling of TEIs and boundary

exchange in relation to:- Upwelling- Gradients in bioproductivity - Gradients in the composition of particle flux- Hypoxia (related to emissions of hydrogen sulphur)- Submarine groundwater discharge- Controls of advection on TEI distribution

Weeks et al., 2004

Sulphur plume

Advection and TEIs distribution in the North Atlantic

Objective: Changes of TEIs related to variable thermohaline circulation

Change of Labrador Sea Water formation from CFC inventories

(moles/grid area) 1970 – 1997: 10 Sv

1998 – 1999: 7-9 Sv 2000 – 2001: 3-4 Sv

2001 – 2003: not muchM. Rhein, pers comm.

Charlie-Gibbs

Fracture Zone

Labr

ador

Sea

Icel

and

Bas

in

0

500

1000

1500

2000

2500

3000

3500

4000

0 0.2 0.4 0.6 0.8

230Thex (dpm/m3)

De

pth

(m

)

Normal Scavenging (S = 2.2m/d)Labrador Sea (1993)Labrador Sea (1999)Eastern N. Atlantic (1994)Eastern N. Atlantic (1996)Eastern N. Atlantic (2001)

Moran et al., 2002; Vogler et al.,1998; Scholten, unpublished

Repeat sections in the North Atlantic during duration of GEOTRACES

Charlie-GibbsFracture Zone