World Data Centre for Greenhouse Gases (WDCGG)

Category	Air sampling observation
Sampling Type	continuous
Sampling Height/Depth	30
Sampling and Analysis Frequency	12-minute
Sampling Environment
Measurement Method	Gas Chromatography (other)
Current status and history of Instruments	GC-Mercuric Oxide Detector (RGA 3)
Description of Instruments	RGA3 Trace Analytical
Time Zone	UTC
Data Period	1995-01-01 - 2009-01-01
Data Type	hourly, daily, monthly
Parameter detail
Other Descriptions for Sampling and Analyses	GC in combination with AAS The height of the ambient air intake is 260 m above sea level from the top of a 30 m high mast. Two freezing units (-4 and -45 °C respectively) are used in series to dry the ambient air prior to analysis. 30-metre 1/4 inch stainless steel air intake
Scientific Aim	Long-term measurements of tropospheric CO representative of air masses advected from the SW Atlantic ocean.
Supporting Contributor(s)
Last update	2010-02-12
Situation	ongoing

Category	Parameter	Country/Territory	Contributor

Updated in
the last 365 days

This site is maintained by the Japan Meteorological Agency
in cooperation with the World Meteorological Organization
(Created : 2001/07/02 Modified : 2010/07/31)

WMO World Data Centre for Greenhouse Gases
c/o Japan Meteorological Agency
1-3-4, Otemachi, Chiyoda-ku
Tokyo 100-8122, Japan

Tel:	+81-3-3287-3439
Fax:	+81-3-3211-4640
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