Central Analytical Laboratories (CAL) - Central Radiocarbon Laboratoray CRL update 2014 Samuel Hammer, Johannes Lux, Stefan Lanz, Bernd Kromer and Ingeborg Levin Institut für Umweltphysik, Uni Heidelberg ICOS Atmosphere Monitoring Station Assembly (MSA) 24.-26.June 2014, Amsterdam CRL implementation plan 2012 2013 2014 pilot phase build-up phase staff size counter modernisation data base development instrument construction lab & QA/QC procedures pilot station fossile CO2-Überhöhung [ppm] Move to new Lab 50 40 30 20 10 0 15 Monatsmittel Heidelberg Schauinsland Jahresmittel Heidelberg Schauinsland 10 5 0 1990 14C sample analysis 1995 2000 2005 2-3 4-5 4-5 2015 test phase 5-6 2016 - 2030 operational phase 6+ WP1: modernization of conventional counters • new CPUs installed for all counters, new preamplifiers installed at 9 counters, further implementation according to requirements • counting wires have been replaced for 12 counters. => further replacements according to requirements • ongoing operation for six selected ICOS stations: (Cabauw, Trainou, OPE, Mace Head, Jungfraujoch, Heidelberg) • 318 analyzed samples in 2013 WP2: database development and integration in ICOS • database structure for AMS samples finalized and running in test mode • automated coupling of AMS and CRL database • test of the „ICOS-CRL APP“ for bar code reading and für database interaction… WP3: Sampling strategy and test of the CRL pilot station • different sampling strategies are currently assessed using modeled GHG time series • diurnal vs. nocturnal sampling in Heidelberg -> first seasonal cycle completed • ongoing comparisons between sodium hydroxide solution and whole air integrated samplers • initial tests of a second, more robust, integrated whole air sample seem promising WP4: Design of a flask extraction and AMS target preparation line • design finished, parts ordered, assembling has begun – 4-fold extraction, 12-fold graphitization – ongoing comparison of conventional counting and AMS analysis using an existing target preparation prototype WP 5: test mode of the ICOS CRL atmospheric 14C in CBW JFJ DeltaC14 CBW DeltaC14 50 40 D 14C [‰] 30 20 10 0 -10 -20 -30 Jan-11 Jan-12 Jan-13 Date Jan-14 WP 5: test mode of the ICOS CRL atmospheric 14C in OPE JFJ DeltaC14 OPE DeltaC14 50 40 D 14C [‰] 30 20 10 0 -10 -20 -30 Jan-11 Jan-12 Jan-13 Date Jan-14 WP 5: test mode of the ICOS CRL atmospheric 14C in HEI JFJ DeltaC14 HEI DeltaC14 50 40 D 14C [‰] 30 20 10 0 -10 -20 -30 Jan-11 Jan-12 Jan-13 Date Jan-14 Quick look: fossil fuel CO2 DFFCO2 [ppm] CBW OPE 20 15 10 5 0 Jan.11 20 15 10 5 0 Jan.11 20 15 10 5 0 Jan.11 Jul.11 Jan.12 Jul.12 Jan.13 Jul.13 Jan.14 OPE Jul.11 Jan.12 Jul.12 Jan.13 Jul.13 Jan.14 HEI Jul.11 Jan.12 Jul.12 Date Jan.13 Jul.13 Jan.14 Summary Conventional counting: • modernization of conventional counters mostly finished • all counters functioning • modernization of conventional sample pre-processing has begun AMS analysis: • building the AMS preparation line shall be finished by the end of the year • ongoing comparisons between both techniques are established Database: • database design for AMS samples finished, currently tested • database acquisition for conventional samples is planed for the end of 2014 14C sampling strategy and test mode: • the development of sampling strategy is slightly delayed, intensified now! • test mode running smoothly CRL implementation plan 2012 2013 2014 pilot phase build-up phase staff size counter modernisation data base development instrument construction lab & QA/QC procedures pilot station fossile CO2-Überhöhung [ppm] Move to new Lab 50 40 30 20 10 0 15 Monatsmittel Heidelberg Schauinsland Jahresmittel Heidelberg Schauinsland 10 5 0 1990 14C sample analysis 1995 2000 2005 2-3 4-5 4-5 2015 test phase 5-6 2016 - 2030 operational phase 6+ CRL-A2: Modernisierung des radiometrischen 14C Labors • Neubau von drei zentralen Apparaturen zur Aufbereitung von konventionelle 14C Proben. – Extraktion – Reinigung – Mengenbestimmung Bislang: Bau der Reinigungsapparatur abgeschlossen, Tests laufen… Work Packages für die Pilot- und Demonstrationsphase des CRL: CRL-P1: CRL-P2: CRL-P3: - Modernisierung existierender Anlagen - Design zukünftiger CRL Instrumentierung - Wissenstransfer - Datenbank für Datenverarbeitung und - Probenmanagement - Entwicklung und Test einer 14CO2 - Beprobungsstrategie für das deutsche/ - europäische ICOS Netzwerk - Test des CRL Demonstrationslabors Work Packages für die Aufbauphase des CRL: CRL-A1: Design, Aufbau und Test der FlaskExtraktion und Target-Herstellung CRL-A2: Modernisierung des radiometrischen 14C Labors CRL-A3: Datenbank Design und Einbindung in das ICOS Datenbank System CRL-A4: Design und Test der 14CO2 Probenahmesysteme und Betrieb der Pilotstation CRL-A5: Testbetrieb des ICOS CRL Arbeitsplan CAL task list - Summary CRL tentative start* Task List Status Build 14CO2 systems for integrated samples tests of new integrated sampling device for AMS samples provide NaOH solution for large volume 14CO2 integrated sampling ongoing, design of improved shipping containers ongoing Analyse NaOH solution samples for D14CO2, d13CO2 ongoing, increase capacity ongoing Q4/ 2014 Analyse flask air samples for D14CO2, Prototype operational, designing final device and ordering components d13CO2 2015 communicate flask air analysis data to ATC (via FCL) database programming started, collaboration with FCL 2015 communicate with station PIs for NaOH shipment and in cases of problems (via CAL DB) logistics database incl. web front end planned in coop. with FCL 2015 keep track of flask location (via CAL DB) logistics database / web front end planned in coop. with FCL 2015 * estimate as of Nov. 2013 200 150 100 50 0 CO2 offset (ppm) D14CO2 (‰) 14CO 2 60 40 and fossil fuel CO2 variability in Heidelberg Jungfraujoch fit curve Heidelberg monthly means (a) total CO2 offset fossil fuel CO2 offset (b) 20 FF CO2 offset (ppm) 0 (c) 15 No long-term decrease of Heidelberg fossil fuel CO2 offset 10 observed yet! 5 0 1990 1995 2000 2005 2010 DCO/DFFCO2 (ppb/ppm) DCO (ppb) DFFCO2 (ppm) Beobachtete vs. Kataster CO/FFCO2 Verhältnisse 40 30 20 10 0 400 300 200 100 0 25 20 15 10 5 fossil fuel CO2 offset (a) CO offset (b) monthly mean annual mean emissions RN (c) 2000 2005 2010 30% Reduktion des CO/FFCO2 Verhältnisses in Heidelberg beobachtet, allerdings stützen sich die Beobachtungen NUR auf nächtliche Daten.
© Copyright 2025 ExpyDoc
