CH₄ _ NTU8028 _ ship - flask _ MRI _ air-sampling

Data Policy

GAW Data Policy

"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

Version

2025-01-16-2354 (Last updated: 2025-01-20)

File

This data set is submitted by MRI.

DL	Gas Species	Station/Mobile	Organization	Type	Period	Filename	Size	Plot
	CH₄	MRI Research, Natushima, R/V	MRI	event	1987-01-26 05:00:00 - 1991-03-10 09:00:00	ch4_ntu8028_ship-flask_48_1001-9999_event	(Text: 0.05MB ; NetCDF: 0.07MB )	png

Text NetCDF

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Organization

NO	48
Acronym	MRI
Name	Meteorological Research Institute
Address 1	Department of Climate and Geochemistry Research
Address 2	Meteorological Research Institute
Address 3	1-1 Nagamine, Tsukuba, 305-0052, Japan
Country/Territory	Japan
Website	https://www.mri-jma.go.jp/index_en.html

Contact(s)

Last updated date	2025-01-16
Name	Hidekazu Matsueda
Prefix
Email	k20007@dokkyo.ac.jp
Organization No	48
Organization acronym	MRI
Organization name	Meteorological Research Institute
Organization country/territory	Japan
Address 1
Address 2
Address 3	Nagamine 1-1, Tsukuba, Ibaraki 305-0052, Japan
Country/territory	Japan
Tel	+81-29-853-8723
Fax

Last updated date	2025-01-16
Name	Masao Ishii
Prefix
Email	mishii@mri-jma.go.jp
Organization No	48
Organization acronym	MRI
Organization name	Meteorological Research Institute
Organization country/territory	Japan
Address 1
Address 2
Address 3	Nagamine 1-1, Tsukuba, Ibaraki 305-0052, Japan
Country/territory	Japan
Tel	＋81-29-853-8722
Fax

Last updated date	2025-04-28
Name	Kazuhiro Tsuboi
Prefix	Mr.
Email	tsuboi@met.kishou.go.jp
Organization No	48
Organization acronym	MRI
Organization name	Meteorological Research Institute
Organization country/territory	Japan
Address 1	1-1, Nagamine
Address 2	Tsukuba
Address 3	Ibaraki 305-0052
Country/territory	Japan
Tel	+81-3-3434-9127
Fax

Collaborator(s)
Aim of Observation	Background observation
Data Time zone	UTC
Unit	ppb
Calibration Scale	9999-12-31 00:00:00 - 9999-12-31 23:59:59: MRI scale
Instrument(s)	9999-12-31 00:00:00 - 9999-12-31 23:59:59: Shimadzu GC-16A(Gas chromatography (FID))
Intake Height above ground level
Sampling Frequency	event
Measurement Calibration	Details of measurement and calibration methods are reported by Matsueda et al. (1996) (See reference section). All of the measurements are re-calculated based on the MRI scale ("corrected" DF/NSC scale). The differences between the MRI and WMO scales are less than 3 ppb, as reported by Tsuboi et al. (2016, 2017) (See reference section).
Data Processing
Processing for averaging	[Hourly] [Daily] [Monthly]
Original Data Quality Flag
Data Quality Flag (Valid/Invalid)
Observation Status	Temporarily suspended
Description	Sampling_height is about 10-20 m above sea level.
Meteorological Data Availability (1: Available)	Wind direction: Wind speed: Relative humidity: Precipitation amount: Air pressure: Air temperature: Dew point temperature: Sea water temperature: Sea surface water temperature: Sea water salinity: Sea surface water salinity:
Meteorological Data Description	Meteorological data may remain as first provided, even when greenhouse gas data are updated.

No DOI available

Related information

Format	Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF
Relation List (Is Part Of)	All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2024-09-24 All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2023-09-13 All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2022-09-07 All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2021-08-27 All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2020-09-28 All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2019-09-19

Format

Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF

Relation List (Is Part Of)

All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2024-09-24
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2023-09-13
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2022-09-07
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2021-08-27
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2020-09-28
All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2019-09-19

GAW Data Policy

Citation format

This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.

Hidekazu Matsueda (MRI), Masao Ishii (MRI), Kazuhiro Tsuboi (MRI), Atmospheric CH₄ by MRI Research, Natushima, R/V, Meteorological Research Institute, dataset published as CH₄_NTU8028_ ship-flask_MRI_air-sampling at WDCGG, ver. 2025-01-16-2354 (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.

Reference(s)

1	Matsueda, H., K. Tsuboi, S. Takatsuji, T. Kawasaki, M. Nakamura, K. Saito, A. Takizawa, K. Dehara, and S. Hosokawa (2018) Evaluation of a new methane calibration system at JMA for WCC Round Robin experiments, Papers in Meteorology and Geophysics, 67, 57–67, doi:10.2467/mripapers.67.57.
2	Matsueda, H., H.Y. Inoue, M. Ishii, and Y. Nogi (1996), Atmospheric methane over the North Pacific from 1987 to 1993, Geochemical Journal, 30, 1-15, doi:10.2343/geochemj.30.1.
3	Matsueda, H., H.Y. Inoue, I. Asanuma, M. Aoyama, and M. Ishii (2000), Carbon monoxide and methane in surface seawater of the tropical Pacific Ocean, In Dynamics and Characterization of Marine Organic Matter, edited by N. Handa, E. Tanoue, and T. Hama, pp. 485-508, TERAPUB/Kluwer, Tokyo.
4	Matsueda, H., Y. Sawa, A. Wada, H. Y. Inoue, K. Suda, Y. Hirano, K. Tsuboi, and S. Nishioka (2004), Methane standard gases for atmospheric measurements at the MRI and JMA and intercomparison experiments, Papers in Meteorology and Geophysics, 54, 91-109, doi:10.2467/mripapers.54.91.
5	Tsuboi, K., H. Matsueda, Y. Sawa, Y. Niwa, M. Takahashi, S. Takatsuji, T. Kawasaki, T. Shimosaka, T. Watanabe, and K. Kato (2016), Scale and stability of methane standard gas in JMA and comparison with MRI standard gas, Papers in Meteorology and Geophysics, 66, 15−24, doi:10.2467/mripapers.66.15.
6	Matsueda, H. (1993), Intercalibration experiment of methane standard gas scale between NOAA/CMDL and MRI/GRL, Papers in Meteorology and Geophysics, 44, 45-56, doi:10.2467/mripapers.44.45.
7	Tsuboi, K., T. Nakazawa, H. Matsueda, T. Machida, S. Aoki, S. Morimoto, D. Goto, T. Shimosaka, K. Kato, N. Aoki, T. Watanabe, H. Mukai, Y. Tohjima, K. Katsumata, S. Murayama, S. Ishidoya, T. Fujitani, H. Koide, M. Takahashi, T. Kawasaki, A. Takizawa, and Y. Sawa (2017), InterComparison Experiments for Greenhouse Gases Observation (iceGGO) in 2012–2016, Technical Reports of the Meteorological Research Institute, No. 79, 1-72, doi:10.11483/mritechrepo.79.

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