Trace gas mole fraction data from measurements of air samples collected in the stratosphere over Japan

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The present dataset includes a set of trace gas mole fraction data measured from air samples collected in the stratosphere over Japan in 2020. The air samples were collected by using a balloon-borne cryogenic air sampler and they were analyzed by a series of measurement systems.

Description

Creator
Taku Umezawa*1 (orcid.org/0000-0003-1217-7439), Satoshi Sugawara*2, Shinji Morimoto*3, Takuya Saito*1
*1Earth System Division, National Institute for Environmental Studies (NIES)
*2Faculty of Education, Miyagi University of Education
*3Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Release date
2024/06/25
Temporal coverage
2020/07/25 - 2020/07/25
Data provider
NIES
Email: cgerdb_admin(at)nies.go.jp
DOI
File format
Data volume
11.2 KB
Version
ver.1.0 (Last updated: 2024/06/25)
Language
English

Data Set

Parameters
CO2, SF6, HFC-23, HFC-134a, HFC-227ea, PFC-218, PFC-318, CFC-11, CFC-12, CFC-13, CFC-113, CFC-114, CFC-115
Observation period
2020/07/25 - 2020/07/25
Location
42.483°N, 143.267°E
Altitude
Sampling height: 14.79 - 35.36 km
Spatial coverage
Latitude: 42.3099 - 42.4487 °
Longitude: 143.452 - 144.633 °
Vertical: 14.79 - 35.36 km
Measurement method
The CO2 mole fraction was measured by using a nondispersive infrared gas analyzer (NDIR) at Tohoku University. The SF6 mole fraction was measured by using a gas chromatograph equipped with an electron capture detector (GC-ECD) at Miyagi University of Education. The halocarbon mole fractions were measured by using a preconcentration gas chromatograph-mass spectrometer (GC-MS) system at National Institute for Environmental Studies.
Calculation method
The CO2 mole fractions are reported on the TU (Tohoku University)-2010 scale (μmol/mol, ppm). The SF6 mole fractions are reported on the TU-2002 scale (pmol/mol, ppt). The halocarbon mole fractions are reported on the NIES-08 scales (pmol/mol, ppt).
Keywords
[Free keywords]
CO2, SF6, CFC, HFC, PFC, stratosphere, balloon
[GCMD_Platform]
Air-based Platforms > Balloons > Balloons
[GCMD_Science]
Atmosphere > Atmospheric Chemistry > Carbon and Hydrocarbon Compounds Atmosphere > Atmospheric Chemistry > Halocarbons and Halogens
Update history
[2024/06/25]
Version 1.0 was released (ver.1.0)

Acknowledgements

Acknowledgements
The balloon stratospheric sampling flight was conducted with support from the Scientific Ballooning (DAIKIKYU) Research and Operation Group of the Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Japan.

References

References
Umezawa et al. (manuscript in preparation), New estimates of stratospheric age of air from halocarbon measurements of air samples collected by a balloon-borne cryogenic air sampler over Japan.
Sugawara, S., S. Ishidoya, S. Aoki, S. Morimoto, T. Nakazawa, S. Toyoda, et al. (2018), Age and gravitational separation of the stratospheric air over Indonesia, Atmos. Chem. Phys., 18, 1819–1833, doi:10.5194/acp-18-1819-2018.

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Umezawa et al. (2024), Trace gas mole fraction data from measurements of air samples collected in the stratosphere over Japan , Ver.x.x.*1, NIES, DOI:10.17595/20240625.001, (Reference date*2: YYYY/MM/DD)
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