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 Organization

NO 9
Acronym BAS
Name British Antarctic Survey
Address 1 British Antarctic Survey
Address 2 High Cross, Madingley Road
Address 3 CAMBRIDGE CB3 0ET
Country/Territory United Kingdom of Great Britain and Northern Ireland
Website https://www.bas.ac.uk/

 Contact(s)

Name Anna Jones
Prefix
Email aejo@bas.ac.uk
Organization No 9
Organization acronym BAS
Organization name British Antarctic Survey
Organization country/territory United Kingdom of Great Britain and Northern Ireland
Address 1 British Antarctic Survey
Address 2
Address 3
Country/territory United Kingdom of Great Britain and Northern Ireland
Tel
Fax
Last updated date 2020-09-10


 Background observation
 UTC
 ppb
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO CO X2014A
 9999-12-31 00:00:00 - 2015-12-31 23:59:59: Aerolaser 5001(VURF)
 2016-01-01 00:00:00 - 9999-12-31 23:59:59: LGR N2O/CO 913-0014-1000(CRDS)
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: 8 (m)
 1 minute
 In 2004 and 2005 a CO/Air standard gas (BOC spectra-seal alpha volumetric standard) was used for the 12 hourly calibrations. This was then cross checked on the Aerolaser instrument with a NOAA Cylinder CA07014 154.1ppbV (1.0) July 2006 against the NOAA/WMO 2004 scale. In July 2012, this cyclinder CA07014 was re-certified (152.9 ppbV (1.0)) against the same scale.

Aerolaser CO is calibrated every 13 hours using a 152.9 ppbV CO (2012) in air standard cylinder which in turn is verified by the manufacturer (NOAA- GMD/WMO Central Calibration Laboratory in Boulder, Colorado, USA)every 2-3 years or when the cylinder pressure is less than 500 psi.
LGR CO is calibrated weekly with a mixture of target and NOAA standards.
 Calibrations, zero values or any data which is invalid are omitted from data sets before averaging. Reduced quality data will be flagged appropriately.
Hourly files will be submitted in addition to daily and monthly. This data is obtained by averaging 1-minute data within a 1 hour period for example between 00:00 - 01:00.
The carbon monoxide data contained in these files are referenced to the most recent WMO scale - WMO CO_X2014A.
 [Hourly] 1-min data are averaged to form the basis of hourly mean values.
 [Daily] 1-min data are averaged to form the basis of daily mean values.
 [Monthly] 1-min data are averaged to form the basis of monthly mean values.
 Error Flag = 1 Good quality data
Error Flag = 2 Reduced quality data
Error Flag = 3 Invalid or missing data
 Valid (background): 1
 Valid: 2
 Invalid: 3
 Temporarily suspended
 Aerolaser AL5001
Measuring range: up to 100,000.00 ppbV
Detection limit: < 0.80 ppbV at Integration time = 10 s
Sensitivity: about 30 to 100 counts/ppbV

LGR
upto 4000 ppb
precision (1 sigma) < 0.40 ppbV at Integration time = 1 s

Sampling is taken from about 8m above the snow surface. Air intake consists of a high volume fan drawing air through an electronically polished stainless steel tube from which a sub-sample is drawn to the instrument by a stainless steel tube of 30 cm length and 1/4"diameter. The air passes through a teflon filter and a nafion dryer (PERMAPURE) before it enters the instrument.
 Wind direction:
 Wind speed:
 Relative humidity:
 Precipitation amount:
 Air pressure:
 Air temperature:
 Dew point temperature:
 Sea water temperature:
 Sea surface water temperature:
 Sea water salinity:
 Sea surface water salinity:
Meteorological data may remain as first provded, even when greenhouse gas data are updated.
 
No data available