Carbon monoxide

Measurements of trace gas concentration carbon monoxide (CO) by using a customized Gas Chromotograph-RGB.

Measurements started on Jan 2007 with a modified version of a commercial RGD2-Trace Analytical analyser. Measurements ended on March 2010.

Citation proposal
(2011) . Carbon monoxide. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/cfb84c14-879a-4b2b-8aac-b8bc37a6b668

Simple

Alternate title

Date ( Publication ): 2011-04-05T03:00:00

Purpose

CO plays an important role in the oxidation/reduction chemistry of the atmosphere.

Therefore, the distributions and trends of CO are key variables to our understanding of the Earth's present and future atmosphere.

Carbon monoxide has an indirect radiative forcing effect by elevating concentrations of methane and tropospheric ozone through chemical reactions with other atmospheric constituents (e.g., the hydroxyl radical OH) that would otherwise destroy them. Through natural processes in the atmosphere, it is eventually oxidized to carbon dioxide.

Status: Completed

Point of contact

Urbino University - Dipartimento di Scienza di Base e Fondamenti - Michela Maione ( )

piazza Rinascimento 6 Urbibo PU 61029 Italy

+39 0722 303316

Point of contact

Urbino University - Dipartimento di Scienza di Base e Fondamenti - Jgor Arduini ( )

piazza Rinascimento 6 Urbibo PU 61029 Italy

+39 0722 303316

Maintenance and update frequency: As needed

Keywords

Carbon monoxide , Gas-cromatography , Station , High Altitude , SHARE , Network , Apennines

Keywords

GAW , Atmospheric conditions , Environmental monitoring facilities

Use limitation: No conditions apply

Access constraints: Copyright

Other constraints

Metadata language: eng

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Supplemental Information

Reference system identifier: EPSG / WGS 1984 / 7.4

Topology level: Geometry only

Geometric object type: Point

Geometric object count: 1

OnLine resource: Mt. Cimone website
Official website of the Mount Cimone Station - Italian Climate Observatory "Ottavio Vittori"

OnLine resource: GAW - WDCGG Website
Official website of the Global Atmosphere Watch - World Data Centre for Greenhouse Gases.

OnLine resource: Mt. Cimone website
Official website of the CO measurements at the Mount Cimone Station - Italian Climate Observatory "Ottavio Vittori"

OnLine resource: gaw143_measurementguide.pdf
GLOBAL ATMOSPHERE WATCH MEASUREMENTS GUIDE JULY 2001 WMO TD

OnLine resource

GAW_192_WMO_TD_1551_web_CO.pdf

Guidelines for the Measurement of

Atmospheric Carbon Monoxide

OnLine resource: CO data - The World Data Centre for Greenhouse Gases (WDCGG)
CO data - The World Data Centre for Greenhouse Gases (WDCGG)

Hierarchy level: Series

Thematic classification correctness

No information provided.

Statement

The instrument is a gas-chromatograph equipped with an RGD detector.

The instrument is running continuously.

In Sampling and Analysis Frequency the high flux of real air continuosly flow through the sampling line and every 30 minutes a portion is splitted for 3 minutes to the gas-chromatograph sampling loop.

Description of Instruments:

time resolution: 1 measurement every 30 minutes;

sensitivity: +- 1 ppb

detection limit: 10 ppb

measurements range: 1 - 10^3 (10 ppb - 10 ppm)

Time zone Local time UTC+1

Processing/Calibration:

-Current Scale: indirect link to NOAA 2004 scale

-Scale and Calibration (traceability): reference standard are real air pumped in Luxfer Scott Marrin cylinders and calibrated at MPI-Jena against NOAA cylinders.

-Measurement Calibration: every 15 minutes a sample is analyzed alternating between real air and reference standard in order to correct for short time instrumental drifts.

Molar fraction is calculated from the ratio of the peak heights and than corrected for non linearity of the detector.