Intercalibration Priorities

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The ultimate goal for the intercalibration component of GEOTRACES is to achieve the best accuracy possible (lowest random and systematic errors) for the suite of GEOTRACES' Trace Elements and Isotopes (TEI) as a prelude to the sampling program, and continuing effort throughout the sampling and analysis program. To achieve this goal, there will be two primary efforts:

(1) Evaluate and develop GEOTRACES sample acquisition, handling, and storage protocols during initial Intercalibration Cruises;

and

(2) Identify existing GEOTRACES primary standards and certified reference materials (CRMs) for the TEI suite (and where needed, producing reference materials or primary standards), including the establishment of GEOTRACES Baseline Stations that can be used to evaluate accuracy from sampling to analysis (to facilitate intercalibration for TEIs that do not have CRMs).

 

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The GEOTRACES Standards and Intercalibration Committee:

Gregory Cutter (Chair), Old Dominion University

Department of Ocean, Earth and Atmospheric Sciences, Norfolk, Virginia 23529

USA; gcutter at odu.edu

Per Andersson, Swedish Museum of Natural History
Laboratory for Isotope Geology, Stockholm, Sweden; per.andersson at nrm.se

Lou Codispoti, University of Maryland Center for Environmental Science

P.O. Box 775, Cambridge, Maryland 21613; codispot at hpl.umces.edu

Peter Croot, Leibniz-Institut für Meereswissenschaften Dienstgebäude Westufer

Forschungsbereich Marine Biogeochemie, Chemische Ozeanographie,

Düsternbrooker Weg 20, D-24105 Kiel, Germany; pcroot at ifm-geomar.de

Roger Francois, The University of British Columbia

Department of Earth and Ocean Sciences, Vancouver, British Columbia,

Canada V6T 1Z4; rfrancois at eos.ubc.ca

Maeve Lohan, University of Plymouth

School of Earth, Ocean and Environmental Sciences, Drake Circus,

Plymouth PL4 8AA, United Kingdom; maeve.lohan at plymouth.ac.uk

Hajime Obata, University of Tokyo

Ocean Research Institute, Tokyo 164-8639 Japan; obata at ori.u-tokyo.ac.jp

Michiel Rutgers van der Loeff, AWI-Geochemistry
D 27515 Bremerhaven Germany; mloeff at awi-bremerhaven.de

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I. REPORTS

1. GEOTRACES Intercalibration Planning Document

II. PROPOSALS

1. U.S. GEOTRACES Sampling and Intercalibration Proposal

III. USER MANUALS

      A. GEOTRACES IPY Protocols

1. GEOTRACES IPY Protocols

2. GEOTRACES Modified Protocols for JGOFS Core Measurements

3. PICES Report

IV. OTHER

1. Intercalibration Overview Presentation

Additional Documents are forthcoming

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Table: Scientists Expressing Interest in the 2008/2009 GEOTRACES Intercalibration Cruises

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>Intercalibration results forthcoming

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