Use of SF5CF3 for ocean tracer release experiments

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Figure S1: Time series of (a) atmospheric CFC-11 and CFC-12 and SF6 in the Northern Hemisphere and (b) ratios of CFC-11, CFC-12, and SF6 in the Northern Hemisphere atmosphere. (321.1Kb)

Figure S2: Chromatograms of SF6, SF5CF3 and CFC-12. (343.4Kb)

Figure S3: Map of integrating sampler tows during S1, along with the vertical profiles from each tow plotted against height above and below the injection depth. (4.097Mb)

Figure S4a: Map of sampling stations during S2, along with the corresponding vertical profiles from each station plotted against potential temperature. (4.429Mb)

Figure S4b: Map of sampling stations during S2, along with the corresponding vertical profiles from each station plotted against pressure. (4.448Mb)

Figure S5a: Map of sampling stations during S3, along with the corresponding vertical profiles from each station plotted against potential temperature. (4.071Mb)

Figure S5b: Map of sampling stations during S3, along with the corresponding vertical profiles from each station plotted against pressure. (4.112Mb)

Figure S6a: Map of sampling stations during S4, along with the corresponding vertical profiles from each station plotted against potential temperature. (5.530Mb)

Figure S6b: Map of sampling stations during S4, along with the corresponding vertical profiles from each station plotted against pressure. (5.527Mb)

Figure S7a: Scatterplot for all samples deeper than 750 dbar from S2 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg, as a function of pressure. (13.12Kb)

Figure S7b: Scatterplot for all samples deeper than 750 dbar from S2 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg, versus C6. (13.90Kb)

Figure S7c: Scatterplot for all samples deeper than 750 dbar from S2 of the SF5CF3 concentration, C5, versus the background corrected SFÂ6 concentration, C6-Cb. with the background Cb, taken as 0.3 fmol/kg. (10.70Kb)

Figure S8a: Scatterplot for all samples deeper than 750 dbar from S3 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6-Cb. (12.92Kb)

Figure S8b: Scatterplot for all samples deeper than 750 dbar from S3 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg, versus C6. (13.81Kb)

Figure S8c: Scatterplot for all samples deeper than 750 dbar from S3 of the SF5CF3 concentration, C5, versus the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg. (15.85Kb)

Figure S9a: Scatterplot for all samples deeper than 750 dbar from S4 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg, as a function of pressure. (9.934Kb)

Figure S9b: Scatterplot for all samples deeper than 750 dbar from S4 of the ratio of the SF5CF3 concentration, C5, to the background corrected SFÂ6 concentration, C6 - Cb, with the background Cb, taken as 0.3 fmol/kg, versus C6. (10.41Kb)

Figure S9c: Scatterplot for all samples deeper than 750 dbar from S4 of the SF5CF3 concentration, C5, versus the background corrected SFÂ6 concentration, C6-Cb, with the background Cb, taken as 0.3 fmol/kg. (10.48Kb)

Figure S10a: Model for mixing in the interior, S1 to S2. (277.2Kb)

Figure S10b: Whole basin model for S2 to S3. (290.3Kb)

Date

2008-02-19

Author

Ho, David T.

Ledwell, James R.

Smethie, William M.

Metadata

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Citable URI

http://hdl.handle.net/1912/3355

As published

http://dx.doi.org/10.1029/2007GL032799

DOI

10.1029/2007GL032799

Keyword

Tracer release experiment; 5-SF3-CF; 6-SF

Abstract

SF6 tracer release experiments (TREs) have provided fundamental insights in many areas of Oceanography. Recently, SF6 has emerged as a powerful transient tracer, generating a need for an alternative tracer for large-scale ocean TREs. SF5CF3 has the potential to replace SF6 in TREs, due to similarities in their properties and behavior, as well as techniques for injection, sampling, and analysis. The suitability of SF5CF3 for TREs was examined in Santa Monica Basin, off the coast of Southern California. In January 2005, a mixture of ca. 10 mol of both SF6 and SF5CF3 was injected on an isopycnal surface near 800 m depth. Over the next 23 months, concentrations of the two tracers mirrored each other very closely, indicating that SF5CF3 is a viable replacement for SF6 in ocean TREs. The mixing parameters inferred from the experiment confirmed the results from an earlier SF6 TRE in the Santa Monica Basin.

Description

Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 35 (2008): L04602, doi:10.1029/2007GL032799.

Collections

Applied Ocean Physics and Engineering (AOP&E)