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

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

2024/06/25

2020/07/25 - 2020/07/25

NIES
Email: cgerdb_admin(at)nies.go.jp

11.2 KB

ver.1.0 (Last updated: 2024/06/25)

English

CO₂, SF₆, HFC-23, HFC-134a, HFC-227ea, PFC-218, PFC-318, CFC-11, CFC-12, CFC-13, CFC-113, CFC-114, CFC-115

2020/07/25 - 2020/07/25

42.483°N, 143.267°E

Sampling height: 14.79 - 35.36 km

Latitude: 42.3099 - 42.4487 °
Longitude: 143.452 - 144.633 °
Vertical: 14.79 - 35.36 km

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.

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).

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[GCMD_Platform]
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[2024/06/25]

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.

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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