Published January 30, 2016 | Version v1
Dataset Open

H2 and H2 deuterium content data collected around the tropopause by the CARIBIC aircraft

Description

This zip file contains the final corrected data that were used for the paper: Batenburg, A. M., Schuck, T. J., Baker, A. K., Zahn, A., Brenninkmeijer, C. A. M., and Röckmann, T.: The stable isotopic composition of molecular hydrogen in the tropopause region probed by the CARIBIC aircraft, Atmos. Chem. Phys., 12, 4633-4646, doi:10.5194/acp-12-4633-2012, 2012
Please cite the original ACP article when using these data.
The paper also contains more information about how these data were collected and calibrated.

H2 and deltaD(H2) are calibrated using one, two, or three laboratory reference air cylinders, depending on measurement period.
The H2 mixing ratio of the reference cylinders was determined by UHEI-IUP or MPI-BGC.
The deltaD(H2) of the reference cylinders is linked to the VMOW scale by measurements of air mixtures containing H2 standards of known isotopic composition.
H2 scale: MPI2009, Jordan and Steinberg, AMT, 2011
deltaD(H2) units: permil deviation from VSMOW, Gonfiantini et al., IAEA-TECDOC-825, IAEA
An empirical correction was applied to the H2 mixing ratios based on data collected within the EUROHYDROS project.
H2 mixing ratio errors can be calculated as 2.5% of the mixing ratio divided by the square root of the number of GC-IRMS repeat measurements.
deltaD(H2) errors can be calculated as 4.5 permil divided by the square root of the number of GC-IRMS repeat measurements.
More information on the collection of these samples and their measurement can be found in Batenburg et al., ACP, 2012, doi:10.5194/acp-12-4633-2012.
More detailed information on the GC-IRMS measurement procedure can be found in Batenburg et al., ACP, 2011, doi:10.5194/acp-11-6985-2011.
The 0 or 1 pollution/outlier flags were assigned by an iterative procedure that is described Batenburg et al., 2012.

The zip file contains the data in .xls and .csv format, as well as in the NASA AMES text format that is used within the CARIBIC project.
We thank Armin Rauthe-Schöch for generating the AMES file.

The corresponding author of the paper can be reached through annekebatenburg you-know-what-symbol gmail.com for questions about the hydrogen measurements.
For the results of other measurements that were done on these samples (like the GHG measurements), it's better to contact someone involved with the CARIBIC/IAGOS database. Armin Rauthe-Schöch (armin.rauthe-schoech you-know-what-symbol mpic.de) can probably help you out.

Notes

Please cite the original ACP article when using these data in a publication.

Files

Dataset_Batenburg_2012_CARIBIC_H2_isotopes.zip

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Additional details

Related works

Is supplement to
10.5194/acp-12-4633-2012 (DOI)