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 samples.
Sampling Environment Generally background air samples.
Measurement Method Gas Chromatography (ECD)
Current status and history of Instruments GC-ECD
Description of Instruments RITS:Hewlett Packard 5890GC, CATS: Shimaduz or Valco
Time Zone UTC
Data Period 1987-01-01 - 2010-07-01
Data Type hourly, daily, monthly
Parameter detail cfc11, cfc113, cfc12
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: