CO₂ _ ALL _ ship - insitu _ JMA _ air-sampling

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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)

Last updated date	2023-08-21
Name	ONO Etsuro
Prefix	Mr.
Email	seadata@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	+81-3-6758-3900 (ex.4657)
Fax

Last updated date	2024-06-27
Name	ENYO Kazutaka
Prefix	Mr.
Email	seadata@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	+81-3-6758-3900 (ex.4619)
Fax

Collaborator(s)

NO	21
Acronym	ECoMo
Name	Foundation for Promoting Personal Mobility and Ecological Transportation

Aim of Observation

Background observation

Data Time zone

UTC+09:00

Unit

ppm

Calibration Scale

9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO2 X2007

Instrument(s)

9999-12-31 00:00:00 - 9999-12-31 23:59:59: Fisher-Rosemount Gmbh & Co.
MLT3.1(NDIR)

Intake Height above ground level

Sampling Frequency

event

Measurement Calibration

Hierarchy of standards

The laboratory primary standard gases are calibrated by WMO reference standard gases.
The laboratory secondary standard gases are calibrated by the laboratory primary standard gases.
The working standard gases in the station are calibrated by the laboratory secondary standard gases.

Frequency of calibration and latest calibration

The laboratory primary standard gases are calibrated by WMO reference standard gases at WMO CCL every 2 years.
The latest calibration at CCL was performed in December 2010.
The laboratory secondary standard gases are calibrated by the laboratory primary standard gases every 6 months.
The working standard gases in the station are calibrated by the laboratory secondary standard gases before and after use (period of use is about 6 months).

Calibration history
Calibration date (Calibration standard)
1st generation
Oct. 1986 at SIO (WMO X85)
2nd generation
Apr. 1991 at SIO (WMO X87)
3rd generation
Oct. 1995 at SIO (WMO X95)
Dec. 2003 at NOAA (WMO Mole Fraction)
4th generation
Jan. 1999 at NOAA (WMO Mole Fraction)
Sep. 2005 at NOAA (WMO X2005)
5th generation
Jan. 2002 at NOAA (WMO Mole Fraction)
Sep. 2008 at NOAA (WMO X2007)
6th generation
Oct. 2006 at NOAA (WMO Mole Fraction)
7th generation
Dec. 2010 at NOAA (WMO X2007)

Information on intercomparison

1st WMO CO2 round robin 1991/1992 (WMO, CMDL: 1991-1992)
Analysis date: Jun. 1992
Remark: WMO/GAW report No.88

2nd WMO CO2 round robin 1995/1997 (WMO, CMDL: 1995-1997)
Analysis date: Jan. 1997
Remark: WMO/GAW report No.132

3rd WMO CO2 round robin 1999/2000 (WMO, CMDL: 1999-2000)
Analysis date: Aug. 1999
Remark:https://www.data.jma.go.jp/gmd/wcc/co2/wmo_rr99.html

4th WMO CO2 round robin 2002/2007 (WMO, CMDL: 2002-2007)
Analysis date: Jan. 2004
Remark: WMO/GAW report No.186

5th WMO CO2 round robin 2009/-(WMO, ESRL: ongoing)
Analysis date: Jun. 2009

Calibration gases used: CO2 in air
The calibration is carried out 1-hourly with 4 working standards. In case that sample gas ( CO2(sea))is out of calibration range (272-405 ppm), values are extrapolated.

Data Processing

All data with obvious sampling or analytical problems are rejected.

Processing for averaging

[Hourly]
[Daily]
[Monthly]

Original Data Quality Flag

Flag information is not reported.
Only validated data are reported except for -9999999.9.
-9999999.9 represents missing or invalid data.

Data Quality Flag (Valid/Invalid)

Observation Status

Terminated

Description

The measurements for air and surface sea water are carried out. The height of intake for air sample is 31 meters above sea surface. The depth of the intake for sea water sample is 11 meters below sea surface. The sea water is introduced into the equilibrator. Both ambient air and equilibrated air are dried using an electronic dehumidifier, perma-pure dryer and chemical desiccant (Mg(ClO4)2) at dew-point lowerthan 2°C, -40°C, -70°C respectivery.
Continuous NDIR analyzer.

Meteorological Data Availability
(1: Available)

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: 1
Sea water salinity: 0
Sea surface water salinity: 1

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 CO₂ data contributed to WDCGG by GAW stations and mobiles by 2024-09-24 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2023-09-13 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2022-09-07 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2021-09-08 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2020-09-28 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2019-09-19 All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2018-10-25

Format

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

Relation List (Is Part Of)

All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2024-09-24
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2023-09-13
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2022-09-07
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2021-09-08
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2020-09-28
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2019-09-19
All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2018-10-25

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.

ONO Etsuro (JMA), ENYO Kazutaka (JMA), Atmospheric CO₂ by Alligator liberty, M/V, Japan Meteorological Agency, dataset published as CO₂_ALL_ ship-insitu_JMA_air-sampling at WDCGG, ver. 2023-08-21-1456 (Reference date^*: YYYY/MM/DD)

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

Reference(s)

1	Hirota, M., K. Nemoto, A. Murata and K.Fushomi, 1991: Observation of Carbon Dioxide Concentrations in Air and Surface Sea Water in the Western North Pacific Ocean. Oceanographical Magazine, 41, Nos. 1-2, 19-28.
2	Inoue, Y. H. and Sugimura, Y. 1992. Variations and distributions of CO2 in and over the equatorial Pacific during the period from the 1986/88 El Niño evention to the 1988/89 La niña event. Tellus 44B, 1-22.

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