World Data Centre for Greenhouse Gases (WDCGG)

Category	Air sampling observation
Sampling Type	continuous
Sampling Height/Depth	30
Sampling and Analysis Frequency	Continuous
Sampling Environment
Measurement Method	Light absorption analysis (UV)
Current status and history of Instruments	UV Absorption
Description of Instruments	Thermo Environmental Instruments TEI TEI49C
Time Zone	UTC
Data Period	1997-01-01 - 2009-01-01
Data Type	event, hourly, daily, monthly
Parameter detail
Other Descriptions for Sampling and Analyses	Sampling site is on top of a 230m coastal cliff. Air intake consists of a high volume fan drawing air through a 4m high glass tube from which a sub-sample is drawn to the instrument. Air passes through a 5 micron dust filter before reaching the instrument. Data: 1-min intervals are averaged and used to create half-hourly means. These in turn form the basis for daily and monthly means. 4-METRE GLASS AIR INTAKE
Scientific Aim
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
E-mail: