Central Radiocarbon Laboratory

- activity report -- activity report -

Samuel Hammer, Johannes Lux, Matthias Kuderer, Sabine Kühr, Eva Gier,

Stefan Lanz and Ingeborg Levin

Institut für Umweltphysik, Heidelberg University

ICOS Annual Meeting Kiel

May 18-20, 2016

New CRL premise: planning is finalised

• Completion of the interior has started

• Completion date (Oct. 2016) has been

confirmed!

Final assembly of graphitization line

• Final assembly of the CO2 extraction and graphitization line in the workshop is ongoing.

Testing of the prototype and resulting design adaptation lead to delays in instrument completion

• Control

software is

being

implemented implemented

in parallel (more than 50

valves & ca. 70

sensors)

Hyltemossa

Norunda

The current ICOS 14CO2 network and extensions

Svartberget

Hyytiälä

1414COCO22 samplingsampling networknetwork

TrainouJungfraujoch

Mace Head

HEICabauw

OPESIL

Hohenpeißenberg

Kresin

Lindenberg

Gartow

Ochsenkopf

2011 2013 2015

-20

0

20

40

2011 2013 2015

-20

0

20

40 OPEHEI∆

14C

[‰

]

∆ 1

4C

[‰

]

Integrated 14CO2 measurements

2011 2013 2015

-20

0

20

40

2011 2013 2015 2011 2013 2015

2011 2013 2015

-20

0

20

40

∆ 1

4C

[‰

]

CBW TRN

∆ 1

4C

[‰

]

Jan-15 Jul-15 Jan-16

-20

0

20

40HPB

∆ 1

4C

[‰

]

Integrated 14CO2 measurements

Scandinavian stations’ 14CO2 level very close

to background

6

Jan-15 Jul-15 Jan-16

Jan-15 Jul-15 Jan-16

-20

0

20

40

Jan-15 Jul-15 Jan-16

-20

0

20

40HYL

∆ 1

4C

[‰

]

NOR

∆ 1

4C

[‰

]

New correction for 14CO2 contamination from nuclear facilities in Heidelberg

Biblis

Five nuclear installations

in ≤ 55 km distance from

Heidelberg sampling site

Biblis

Obrigheim

Philippsburg

KarlsruheNeckarwestheim

HD

New correction for 14CO2 contamination from nuclear facilities in Heidelberg

12

14

16

18

20

0.5° x 0.5° mean = 2.44 ‰

1.0° x 1.0° mean = 3.10 ‰

2.5° x 2.5° mean = 4.92 ‰

nu

cle

ar [

‰]

KKW Philippsburg 1 with 0.45 TBq 14

CO2 yr

-1

01.01.2011 01.01.2012 01.01.2013 01.01.2014

0

2

4

6

8

10

∆14C

nu

cle

ar

New correction for 14CO2 contamination from nuclear facilities in Heidelberg

More dispersion in

HYSPLIT with higher

resolution wind field (Gdas0p5: 0.5° x 0.5°)

More confined plume in

HYSPLIT with lower

resolution wind field (NCEP/NCAR reanal.: 2.5° x 2.5°)

New correction for 14CO2 contamination from nuclear facilities in Heidelberg

Biblis

Five nuclear installations

in ≤ 55 km distance from

Heidelberg sampling site

Biblis

Obrigheim

Philippsburg

KarlsruheNeckarwestheim

HD

Main wind Main wind Main wind Main wind directiondirectiondirectiondirection

New correction for 14CO2 contamination from nuclear facilities in Heidelberg

0.15

0.20

0.25

0.30

0.5° x 0.5° mean = 0.039 ‰

1.0° x 1.0° mean = 0.044 ‰

2.5° x 2.5° mean = 0.025 ‰

nucle

ar [‰

]

KKW Obrigheim with 0.01 TBq 14

CO2 yr

-1

01.01.2011 01.01.2012 01.01.2013 01.01.2014

0.00

0.05

0.10

0.15

∆1

4C

nucle

ar

Summary

• CRL premises (laboratory in an office building) under interiorconstruction. Date of move foreseen for October 2016.

• Some delays in instrument construction and database/evaluation tool finalization.

• CRL services for the ICOS network are operational:> 300 conventional 14CO2 samples processed in 2015

13 conventional 14CO2 samplers built and delivered to the ICOS network13 conventional CO2 samplers built and delivered to the ICOS network

• Fossil fuel determination using integrated sampling ischallenging for some ICOS class 1 stations. Nonetheless, thesemeasurements are important to monitor long-termcontinental FFCO2 changes.

• Correction of 14CO2 contamination from NPPs improvedthrough dedicated Hysplit model estimates.

• New FFCO2 sampling strategies for Europe to be elaborated inEU-H2020 proposal RINGO.

Thank you !