*DATASET-NAME : Inorganic chemistry: dissolved gases in the water column, in Southern Adriatic, Otranto Strait Sea and Ionian Sea.
*TIME-PERIOD : 27 August - 11 September 1997 and 9 - 22 February 1999
*GEOGRAPHIC COVERAGE : Southern Adriatic Sea, Northern Ionian Sea
*PROJECT : MASTIII/MTPII/MATER, MAss Transfer and Ecosystem Response
*PARAMETERS : CFC-11, CFC-12, CFC-113 measurements with quality flag in water column at standard or selected depths.
|
CODE |
NAME |
UNIT |
ACCURACY |
Minimum value |
Maximum value |
|
CFC-11 |
F11 |
pmol/kg |
2.7% |
0 |
4.0 |
|
CFC-12 |
F12 |
pmol/kg |
0.85% |
0 |
2.0 |
|
CFC-113 |
F113 |
pmol/kg |
3.0% |
0 |
1.0 |
|
qual |
quality flag (3 digit number): digit 1 for CFC11, 2 for CFC12 and 3 for CFC113 |
|
|
111 |
999 |
*INSTRUMENTS : Gas chromatograph with capillary column and electron capture detector.
DESCRIPTION, OBJECTIVES, METHODOLOGY
Offline CFC sampling: 100 ml of sea water are filled into glas ampoules which are
flame-sealed with a CFC-free nitrogen headspace. In the laboratory at Bremen are
measured with a fully automated gas chromatographic system. The basic design
of system consists of a capillary column combined with a low volume trap to
achieve full separation of peaks and high resolution.
30 ml of the sample are analyzed. The system is standardly calibrated against gas
standards. All concentrations are referenced against the SIO93 scale.
Individual errors have been assigned to each measurement. The quality digit
assigend to each measurement contains information about the data quality
2=good measurement, 3= questionable measurement, 4=bad measurement, 6=replicate
sample.
VOLUME/NUMBER OF PROFILES : 126 values/9 profiles and 94 values/7 profiles
REFERENCES : Bulsiewicz, K. H. Rose, O. Klatt, A. Putzka and W. Roether, A capillary-column chromatographic system for efficient chlorofluorocarbon measurements in ocean water, J. Geophys. Res., Vol. 103, C8, 15959-15970, 1998.
*LABORATORY in charge of chlorofluorocarbon measurements :
University of Bremen, IUP, Fb1
Dept. of Traceroeacongraphy
P.O. Box 330 440
28334 Bremen, Germany
*Responsible Scientist : Dr. Birgit Klein and Dr. Wolfgang Roether
Tel : 49 (0)421 218 2931
Fax : 49 (0)421 2187018
Email : bklein@physik.uni-bremen.de
*STORAGE-MEDIUM : Hard disk.
*AVAILABILITY : Data availability is submitted to the originator
permission.
OSSERVATORIO GEOFISICO SPERIMENTALE
Department of Oceanology
PO BOX 2011
IT-34016 TRIESTE
Italy
tel : +39 40 21401
*COMPLETED-BY : Dr. Birgit Klein, UNIVERSITY OF BREMEN-GERMANY
*ENTRY-DATE : 1999-10-12
| Available Data Set(s) | Processing Level |
| MAI2 AUG 97 - Dissolved CFCs in the Water Column | IN VALIDATION |
| MAI7 FEB 99 - Dissolved CFCs in the Water Column | IN VALIDATION |
