Observational Data of Atmospheric O3 Mixing Ratios at Mt. Happo Observatory

This dataset is time series data of atmospheric ozone (O3) mixing ratios measured at Mt. Happo Observatory situated in Nagano Prefecture, Japan. The observatory is located in the mountainous area (1850 m a.s.l.) near the Sea of Japan coast, and has been used for the observations of long-range transport of trace gases and aerosols from the Asian continent.

Description

Creator
Hiroshi Tanimoto*1 (ORCID iD iconorcid.org/0000-0002-5424-9923), Sachiko Okamoto*2 (ORCID iD iconorcid.org/0000-0001-6397-9314)
*1 Earth System Division, National Institute for Environmental Studies (NIES)
*2 LISA, UMR CNRS 7583
Release date 2021/07/09
Temporal coverage 2012/06/18 - 2016/12/31
Data provider
NIES
Email: cgerdb_admin(at)nies.go.jp
DOI 10.17595/20210709.001
File format NASA Ames Format 1001
Data volume 268 KB
Version ver.2021-1.1 (Last updated: 2022/04/15)
Language English

Data Set

Parameters O3 mixing ratio
Observation period From 2012/06/18 (ongoing)
Location 36.7°N, 137.8°E
Altitude Elevation: 1850 m
Sampling height: 6 m above ground
Measurement method

Ambient air is continuously drawn from the top of an air sampling inlet (6 m above the ground level) through a glass manifold by a pumping blower, and then directed to the O3 instrument by means of a passivated Teflon tubing. The mixing ratios of O3 are determined using photometric instruments based on absorption in the ultraviolet region. The O3 instruments have been directly scaled to the primary standard, the Standard Reference Photometer (SRP) 35 once a year.
Calculation method

O3 mixing ratio values measured at 1-minute intervals are recorded. The hourly values are calculated by averaging all the 1-minute values in hour.
Keywords
[GCMD_Platform]
In Situ Land-based Platforms > Ground Stations
[GCMD_Science]
Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Atmospheric Ozone > Ozone Surface
Atmosphere > Air Quality > Tropospheric Ozone
Update history
[2022/04/15]
A new data set for the period between 2014 and 2016 has been added, as ver.2021-1.1.
[2021/07/09]
The data in 2012, 2013 are released, as ver.2021-1.0

Contributors

Supervisor,
Project Manager
Hiroshi Tanimoto (ORCID iD iconorcid.org/0000-0002-5424-9923)
Earth System Division, NIES
Data Manager
Kimiko Suto
Earth System Division, NIES

Reference Information

References
  • Okamoto, S., Tanimoto, H., Hirota, N., Ikeda, K., & Akimoto, H. (2018). Decadal shifts in wind patterns reduced continental outflow and suppressed ozone trend in the 2010s in the lower troposphere over Japan. Journal of Geophysical Research: Atmospheres, 123, 12,980– 12,993, doi:10.1029/2018JD029266.

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When publishing any Products based on the present data set, it must be clearly stated that the present data set was used.

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Citation format

When this data set is referred to in publications, it should be cited in the following format.

Tanimoto et al. (2021), Observational Data of Atmospheric O3 Mixing Ratios at Mt. Happo Observatory, ver.xxxx-x.x*1, NIES, DOI:10.17595/20210709.001. (Reference date*2: YYYY/MM/DD)

*1 The version number is indicated in the name of each data file.

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When mentioning the NIES observations of surface O3 at Mt. Happo, refer to Okamoto et al. (2018).
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