Introduction
Contributors
Data/
Quick Plot
Barrow
--------
Catalogue
search
Search
form
Map
search
Advanced
search
and plot
--------

FTP
--------

Sample programs
Publications
Related
Links
Update
Note
Home
Site Map
WDCGG Data Submission and Dissemination Guide (PDF 1.2Mbyte)

WDCGG leaflet (PDF 2.7MByte, July 2008)

Barrow - NOAA/GMD
Parameter Inventory Parameter Metadata Station Contributor
13CH4
flask		 13CO2 *
flask		 C18O2 *
flask		 C2Cl4
flask		 CBrClF2
flask		 CBrClF2 *
continuous		 CBrF3
flask		 CCl4
flask		 CCl4 *
continuous		 CFCs *
flask		 CFCs *
continuous
CH2Cl2
flask		 CH3Br *
flask		 CH3CCl3
flask		 CH3CCl3 *
continuous		 CH3Cl *
continuous		 CH4 **
continuous		 CH4 ** *
flask		 CO *
flask		 CO2 ** *
flask		 CO2 ** *
continuous		 H2 *
flask
HCFCs *
flask		 HCFCs *
continuous		 HFCs *
flask		 N2O ** *
flask		 N2O ** *
continuous		 O3 *
continuous		 SF6
flask		 SF6 *
continuous
Observation Processing/Calibration Contact Person Reference Data/Quick Plot
Category Air sampling observation
Sampling Type continuous
Sampling Height/Depth
Sampling and Analysis Frequency Hourly air sample.
Sampling Environment Generally background air samples.
Measurement Method Gas Chromatography (ECD)
Current status and history of Instruments Custom built four channel GC with Valco and/or Shimadzu ECDs.
Description of Instruments Hewlett Packard (RITS), Valco ECD (CATS)
RITS: Hewlett Packard5890GC, CATS: Valco
Time Zone UTC
Data Period 1987-01-01 - 2010-07-01
Data Type hourly, daily, monthly
Parameter detail
Other Descriptions for Sampling and Analyses There are two separate air sample lines on a small tower using 3/8" Dekabon (Synflex) tubing. About 2-5 liters of air are continuously drawn through the tubing. Air samples are alternated between each air sample line.

Air and calibration samples are passed through a 72" long Nafion dryer followed by a magnesium perchlorate trap.
Scientific Aim
Supporting Contributor(s) NOAA/ESRL
Last update 2010-08-10
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 : 2010/09/02)
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: