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Login to WDCGG as
CH4 _ EOM _ aircraft - flask _ NIES _ data1
Have you completed registration?
Registration and login are needed to download data files.
In line with the GAW Data Policy, users should contact the contributors of all data of interest and propose co-authorship or acknowledgement.


 Organization

NO 53
Acronym NIES
Name National Institute for Environmental Studies
Address 1
Address 2 National Institute for Environmental Studies
Address 3 16-2 Onogawa, Tsukuba 305-8506, Japan
Country/Territory Japan
Website https://www.nies.go.jp/index-e.html

 Contact(s)

Name Toshinobu Machida
Prefix
Email tmachida@nies.go.jp
Organization No 53
Organization acronym NIES
Organization name National Institute for Environmental Studies
Organization country/territory Japan
Address 1
Address 2
Address 3 16-2 Onogawa, Tsukuba 305-8506, Japan
Country/territory Japan
Tel +81-29-850-2525
Fax +81-29-858-2645
Last updated date 2023-06-27


Name Yosuke Niwa
Prefix
Email niwa.yosuke@nies.go.jp
Organization No 53
Organization acronym NIES
Organization name National Institute for Environmental Studies
Organization country/territory Japan
Address 1
Address 2
Address 3
Country/territory Japan
Tel +81-29-850-2537
Fax +81-29-858-2219
Last updated date 2023-06-27


Name Hidekazu Matsueda
Prefix
Email hmatsued@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 +81-29-853-8723
Fax +81-29-853-8728
Last updated date 2023-08-30


NO 48
Acronym MRI
Name Meteorological Research Institute
 Background observation
 UTC
 ppb
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: NIES94
 9999-12-31 00:00:00 - 2005-11-30 23:59:59: Yanaco AG-1F(Gas chromatography (FID))
 2005-12-01 00:00:00 - 9999-12-31 23:59:59: Agilent 5890 or 7890A(Gas chromatography (FID))
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: NA (m)
 event
 NIES94 CH4 scale is higher than the WMO-CH4-X2004A scale by 4.1 ppb at around 1736 ppb and by 5.5 ppb at around 1942 ppb determined by the latest round robin intercomparison: https://www.esrl.noaa.gov/gmd/ccgg/wmorr/
 All of the CH4 data reported here can be used considering an overall uncertainty of less than 1ppb, although it is noted that an appropriate data selection is necessary for making time-series data sets of mean CH4, as reported by Matsueda et al.(2002a), and Matsueda et al. (2008).
 [Hourly]
 [Daily]
 [Monthly]
 
 Operational/Reporting
 If these data have an important part in the User's Product, the User must contact the Author concerning co-authorship before publication. Citing this data set as described below and acknowledging the Author are enough when these data play a minor role in the User's Product (e.g., global analyses such as inverse modeling).

When this data set is referred to in publications, it should be cited in the following format
Machida T., H. Matsueda, Y. Sawa, Y. Niwa, K. Tsuboi, K. Ishijima, K. Katsumata, S. Murayama, S. Morimoto, D. Goto, S. Aoki and M. Sasakawa (2023), Atmospheric trace gas data from the CONTRAIL flask air sampling, ver. 2023.1.0, Center for Global Environmental Research, NIES, DOI:10.17595/20230725.001 (Reference date *: YYYY/MM/DD)
* As the reference date, please indicate the date you downloaded the files.

When generally referring to the flask sampling data of CONTRAIL, please also cite Sawa et al. (2015), Matsueda et al. (2015) and Machida et al. (2008). Furthermore, the User is encouraged to cite relevant paper(s) listed below
(see http://www.cger.nies.go.jp/contrail/pubs.html for more references).
 Wind direction: 0
 Wind speed: 0
 Relative humidity: 0
 Precipitation amount: 0
 Air pressure: 1
 Air temperature: 0
 Dew point temperature: 0
 Sea water temperature: 0
 Sea surface water temperature: 0
 Sea water salinity: 0
 Sea surface water salinity: 0
Meteorological data may remain as first provided, even when greenhouse gas data are updated.
 

 DOI Metadata

DOI
ch4_eom_aircraft-flask_53_9999-9999_event.nc 10.17595/20230725.001
ch4_eom_aircraft-flask_53_9999-9999_event.txt 10.17595/20230725.001
ch4_eom_aircraft-flask_53_9999-9999_event_met.nc 10.17595/20230725.001
ch4_eom_aircraft-flask_53_9999-9999_event_met.txt 10.17595/20230725.001
For more information, please refer: doi.org/10.17595/20230725.001

 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 2023-09-13

 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."

 Citation format

This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.
Toshinobu Machida (NIES), Yosuke Niwa (NIES), Hidekazu Matsueda (MRI), Atmospheric CH4 by CONTRAIL, National Institute for Environmental Studies, dataset published as CH4_EOM_ aircraft-flask_NIES_data1 at WDCGG, ver. 2023-06-27-0252 (Reference date*: YYYY/MM/DD)

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

 Reference(s)

1  Machida T., H. Matsueda, Y. Sawa, Y. Niwa, K. Tsuboi, K. Ishijima, K. Katsumata, S. Murayama, S. Morimoto, D. Goto, S. Aoki and M. Sasakawa (2023), Atmospheric trace gas data from the CONTRAIL flask air sampling, ver. 2023.1.0 , Center for Global Environmental Research, NIES, DOI:10.17595/20230725.001 (Reference date *: YYYY/MM/DD)
* As the reference date, please indicate the date you downloaded the files.
2  Machida, T., H. Matsueda, Y. Sawa, Y. Nakagawa, K. Hirotani, N. Kondo, K. Goto, N. Nakazawa, K. Ishikawa and T.Ogawa (2008), Worldwide measurements of atmospheric CO2 and other trace gas species using commercial airlines, J. Atmos. Oceanic Technol., 25(10), 1744-1754, doi:10.1175/2008JTECHA1082.1.
3  Matsueda, H., H. Y. Inoue, and M. Ishii (2002), Aircraft observation of carbon dioxide at 8-13 km altitude over the western Pacific from 1993 to 1999, Tellus, 54B,1-21, doi:10.3402/tellusb.v54i1.16645.
4  Matsueda, H., T. Machida, Y. Sawa, Y. Nakagawa, K. Hirotani, H. Ikeda, N. Kondo, and K. Goto (2008), Evaluation of atmospheric CO2 measurements from new flask air sampling of JAL airliner observations, Pap. Meteorolo. Geophys., 59, 1-17, doi:10.2467/mripapers.59.1.
5  Matsueda, H., T. Machida, Y. Sawa, Y. Niwa (2015), Long-term change of CO2 latitudinal distribution in the upper troposphere, Geophys. Res. Lett., 42, doi:10.1002/2014GL062768.
6  Sawa, Y., T. Machida, H. Matsueda, Y. Niwa, K. Tsuboi, S. Murayama, S. Morimoto, S. Aoki (2015), Seasonal changes of CO2, CH4, N2O, and SF6 in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner, Geophys. Res. Lett., 42, doi:10.1002/2014GL062734.
7  Umezawa, T., T. Machida, K. Ishijima, H. Matsueda, Y. Sawa, P. K. Patra, S. Aoki, and T. Nakazawa (2012), Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific, Atmos. Chem. Phys., 12, 8095-8113, doi:10.5194/acp-12-8095-2012.