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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 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.4622)
Fax
Last updated date 2021-06-24


Name KADONO Koji
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.4621)
Fax
Last updated date 2021-06-24


 Background observation
 UTC+09:00
 ppm
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO2 X2007
 2001-01-01 00:00:00 - 2009-08-31 23:59:59: Fisher-Rosemount GmbH & Co., MLT 3.1(NDIR)
 2009-09-01 00:00:00 - 2012-03-31 23:59:59: LI-COR Corp., LI-7000(NDIR)
 2012-04-01 00:00:00 - 2012-05-31 23:59:59: Fisher-Rosemount GmbH & Co., MLT 3.1(NDIR)
 2012-06-01 00:00:00 - 9999-12-31 23:59:59: LI-COR Corp., LI-7000(NDIR)
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: NA (m)
 event
 Standard gases used: Mixed gas of carbon dioxide and purified natural air
Calibration: Measuring a set of 4 or 5 standard gases with different concentrations, every 1 or 2 hour.
A quadratic fitting curve is determined from the result of calibration.
The mole fraction of carbon dioxide is determined using the fitting curve.
 The mole fraction is determined using the quadratic equation based on the calibration.
Erroneous data are identified by means of visual inspection and are reported with flag 3.
 [Hourly]
 [Daily]
 [Monthly]
 Flag information is not reported.
Only validated data are reported except for -9999999.9.
-9999999.9 represents missing or invalid data.
 Operational/Reporting
 The measurements for air and surface sea water are carried out. The height of intake for air sample is about 9 meters above sea surface. The depth of the intake for sea water sample is about 4 meters below sea surface. The tubing for air sample is made of fluorinated ethylene - perfluoroalkoxyethylene copolymer (PFA). The inner diameter, outer diameter of the tubing are 19/64 inches and 3/8 inches, respectively. The length of the tubing is approximately 40 meters. The sea water is introduced into the shower head type equilibrator. Both introduced ambient air and equilibrated air are dried using electronic cooling unit, Perma Pure dryer and chemical desiccant (Mg(ClO4)2).
 Wind direction: 1
 Wind speed: 1
 Relative humidity: 1
 Precipitation amount: 0
 Air pressure: 1
 Air temperature: 1
 Dew point temperature: 1
 Sea water temperature: 0
 Sea surface water temperature: 1
 Sea water salinity: 0
 Sea surface water salinity: 1
Meteorological data may remain as first provided, even when greenhouse gas data are updated.