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 Organization

NO 1
Acronym JMA
Name Japan Meteorological Agency
Address 1
Address 2
Address 3 3-6-9 Toranomon, Minato City, Tokyo 105-8431
Country/Territory Japan
Website https://www.jma.go.jp/jma/indexe.html

 Contact(s)

Name SAITO Kazuyuki
Prefix Mr.
Email ghg_obs@met.kishou.go.jp
Organization No 1
Organization acronym JMA
Organization name Japan Meteorological Agency
Organization country/territory Japan
Address 1 Atmosphere and Ocean Department
Address 2 Atmospheric Environment and Ocean Division
Address 3 3-6-9 Toranomon, Minato City, Tokyo 105-8431
Country/territory Japan
Tel +81-3-3434-9127
Fax
Last updated date 2021-06-30


 Background observation
 UTC+09:00
 ppt
 1992-01-01 00:00:00 - 9999-12-31 23:59:59: The gravimetric standard gas of ppt order concentration.
 1991-01-01 00:00:00 - 2003-06-30 23:59:59: Yanaco Ohgi Co., Ltd. AG-1000EN(Gas chromatography (ECD))
 2003-07-01 00:00:00 - 2008-01-31 23:59:59: Shimadzu Corporation GC-14B(Gas chromatography (ECD))
 2008-02-01 00:00:00 - 9999-12-31 23:59:59: Shimadzu Corporation GC-2014(Gas chromatography (ECD))
 1992-01-01 00:00:00 - 9999-12-31 23:59:59: 7 (m)
 hourly
 The quadratic fitting curve is determined every 8 hours by a set of 3 gravimetric standard gases of CFCs-in-natural air mixtures in different concentrations. The mole fraction is determined by this fitting curve.
 The raw data from instrument is collected by the data acquisition system,and stored in the system as every one hour raw data. CFCs measurements are checked at the site by an operator every day. All irregular measurements and information are recorded in a log book. Measurement data are transmitted to the headquarters every month and are checked again there. Finally, the measurement data are checked and validated by the contributor at the headquarters.
 [Hourly] Hourly raw data are based from observed data for one hour after the irregular and evident error data are rejected.
 [Daily] Daily data are taken from the arithmetic mean of selected hourly data. For the details of background daily data, please refer to https://www.data.jma.go.jp/gmd/env/ghg_obs/JMA_flag.html
 [Monthly] Monthly mean concentrations are calculated from background daily data. For the details of background daily data, please refer to https://www.data.jma.go.jp/gmd/env/ghg_obs/JMA_flag.html
  Daily data
0-2: no background condition
3: background condition
9: missing
Monthly data
2: no valid Daily data
3: valid
9: missing
For the details, please refer to https://www.data.jma.go.jp/gmd/env/ghg_obs/JMA_flag.html
 Operational/Reporting
 Sample air is discretely sampled into the analyzer and analyzed every an hour.
 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 may remain as first provided, even when greenhouse gas data are updated.
 

 DOI Metadata

DOI
cfc12_ryo_surface-insitu_1_9999-9999_daily.nc 10.50849/WDCGG_0001-2012-1302-01-01-9999
cfc12_ryo_surface-insitu_1_9999-9999_daily.txt 10.50849/WDCGG_0001-2012-1302-01-01-9999
cfc12_ryo_surface-insitu_1_9999-9999_monthly.nc 10.50849/WDCGG_0001-2012-1302-01-01-9999
cfc12_ryo_surface-insitu_1_9999-9999_monthly.txt 10.50849/WDCGG_0001-2012-1302-01-01-9999
Version 2021-06-30-0153 (Data Version History)
* DOIs and file names may have multiple versions. Be sure to check the data version.
Title Atmospheric CFC-12 at Ryori by Japan Meteorological Agency, dataset published as CFC-12_RYO_surface-insitu_JMA_data1 at WDCGG
Creator Japan Meteorological Agency
SAITO Kazuyuki (JMA)
Publisher World Data Centre for Greenhouse Gases
Publication Date 2016-12-20 (Last Updated: 2021-07-08)
Format Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF
Relation List (Is Part Of) All CFC-12 data contributed to WDCGG by GAW stations and mobiles by 2020-09-28
All CFC-12 data contributed to WDCGG by GAW stations and mobiles by 2019-09-18
All CFC-12 data contributed to WDCGG by GAW stations and mobiles by 2018-10-18
Geolocation Point
Latitude (north: +; south: -) 39.0319
Longitude (east: +; west: -) 141.8222

 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.
SAITO Kazuyuki (JMA), Atmospheric CFC-12 at Ryori by Japan Meteorological Agency , dataset published as CFC-12_RYO_ surface-insitu_JMA_data1 at WDCGG, ver. 2021-06-30-0153, https://doi.org/10.50849/WDCGG_0001-2012-1302-01-01-9999 (Reference date*: YYYY/MM/DD)

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

 Reference(s)

1  JMA, Observation method of the greenhouse gas http://www.data.jma.go.jp/gmd/env/ghg_obs/en/